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docs: improve go and csharp example

This commit is contained in:
t_max 2024-08-02 17:12:14 +08:00
parent b779770979
commit daf6437f53
52 changed files with 389 additions and 931 deletions
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6
docs/examples/csharp/.gitignore vendored
View File

@ -3,6 +3,7 @@
connect/bin connect/bin
influxdbLine/bin influxdbLine/bin
optsJSON/bin optsJSON/bin
nativesml/bin
optsTelnet/bin optsTelnet/bin
query/bin query/bin
sqlInsert/bin sqlInsert/bin
@ -11,9 +12,12 @@ subscribe/bin
wsConnect/bin wsConnect/bin
wsInsert/bin wsInsert/bin
wsQuery/bin wsQuery/bin
wssml/bin
wsStmt/bin wsStmt/bin
wssubscribe/bin
connect/obj connect/obj
influxdbLine/obj influxdbLine/obj
nativesml/obj
optsJSON/obj optsJSON/obj
optsTelnet/obj optsTelnet/obj
query/obj query/obj
@ -23,4 +27,6 @@ subscribe/obj
wsConnect/obj wsConnect/obj
wsInsert/obj wsInsert/obj
wsQuery/obj wsQuery/obj
wssml/obj
wsStmt/obj wsStmt/obj
wssubscribe/obj

9
docs/examples/csharp/connect/Program.cs
View File

@ -8,26 +8,27 @@ namespace TDengineExample
// ANCHOR: main // ANCHOR: main
static void Main(String[] args) static void Main(String[] args)
{ {
var connectionString = "host=127.0.0.1;port=6030;username=root;password=taosdata";
try try
{ {
// Connect to TDengine server using Native // Connect to TDengine server using Native
var builder = new ConnectionStringBuilder("host=localhost;port=6030;username=root;password=taosdata"); var builder = new ConnectionStringBuilder(connectionString);
// Open connection with using block, it will close the connection automatically // Open connection with using block, it will close the connection automatically
using (var client = DbDriver.Open(builder)) using (var client = DbDriver.Open(builder))
{ {
Console.WriteLine("connected"); Console.WriteLine("Connected to " + connectionString + " successfully.");
} }
} }
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to connect to " + connectionString + "; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to connect to " + connectionString + "; Err:" + e.Message);
throw; throw;
} }
} }

4
docs/examples/csharp/nativesml/Program.cs
View File

@ -42,13 +42,13 @@ namespace TDengineExample
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to insert data with schemaless; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to insert data with schemaless; Err:" + e.Message);
throw; throw;
} }
} }

67
docs/examples/csharp/nativesml/obj/nativesml.csproj.nuget.dgspec.json
View File

@ -1,67 +0,0 @@
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"format": 1,
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"packagesPath": "/root/.nuget/packages/",
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}
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}
}

15
docs/examples/csharp/nativesml/obj/nativesml.csproj.nuget.g.props
View File

@ -1,15 +0,0 @@
<?xml version="1.0" encoding="utf-8" standalone="no"?>
<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
<RestoreSuccess Condition=" '$(RestoreSuccess)' == '' ">True</RestoreSuccess>
<RestoreTool Condition=" '$(RestoreTool)' == '' ">NuGet</RestoreTool>
<ProjectAssetsFile Condition=" '$(ProjectAssetsFile)' == '' ">$(MSBuildThisFileDirectory)project.assets.json</ProjectAssetsFile>
<NuGetPackageRoot Condition=" '$(NuGetPackageRoot)' == '' ">/root/.nuget/packages/</NuGetPackageRoot>
<NuGetPackageFolders Condition=" '$(NuGetPackageFolders)' == '' ">/root/.nuget/packages/</NuGetPackageFolders>
<NuGetProjectStyle Condition=" '$(NuGetProjectStyle)' == '' ">PackageReference</NuGetProjectStyle>
<NuGetToolVersion Condition=" '$(NuGetToolVersion)' == '' ">6.8.0</NuGetToolVersion>
</PropertyGroup>
<ItemGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
<SourceRoot Include="/root/.nuget/packages/" />
</ItemGroup>
</Project>

2
docs/examples/csharp/nativesml/obj/nativesml.csproj.nuget.g.targets
View File

@ -1,2 +0,0 @@
<?xml version="1.0" encoding="utf-8" standalone="no"?>
<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" />

149
docs/examples/csharp/nativesml/obj/project.assets.json
View File

@ -1,149 +0,0 @@
{
"version": 3,
"targets": {
"net6.0": {
"Newtonsoft.Json/13.0.3": {
"type": "package",
"compile": {
"lib/net6.0/Newtonsoft.Json.dll": {
"related": ".xml"
}
},
"runtime": {
"lib/net6.0/Newtonsoft.Json.dll": {
"related": ".xml"
}
}
},
"TDengine.Connector/3.1.3": {
"type": "package",
"dependencies": {
"Newtonsoft.Json": "13.0.3"
},
"compile": {
"lib/net6.0/TDengine.dll": {}
},
"runtime": {
"lib/net6.0/TDengine.dll": {}
}
}
}
},
"libraries": {
"Newtonsoft.Json/13.0.3": {
"sha512": "HrC5BXdl00IP9zeV+0Z848QWPAoCr9P3bDEZguI+gkLcBKAOxix/tLEAAHC+UvDNPv4a2d18lOReHMOagPa+zQ==",
"type": "package",
"path": "newtonsoft.json/13.0.3",
"files": [
".nupkg.metadata",
".signature.p7s",
"LICENSE.md",
"README.md",
"lib/net20/Newtonsoft.Json.dll",
"lib/net20/Newtonsoft.Json.xml",
"lib/net35/Newtonsoft.Json.dll",
"lib/net35/Newtonsoft.Json.xml",
"lib/net40/Newtonsoft.Json.dll",
"lib/net40/Newtonsoft.Json.xml",
"lib/net45/Newtonsoft.Json.dll",
"lib/net45/Newtonsoft.Json.xml",
"lib/net6.0/Newtonsoft.Json.dll",
"lib/net6.0/Newtonsoft.Json.xml",
"lib/netstandard1.0/Newtonsoft.Json.dll",
"lib/netstandard1.0/Newtonsoft.Json.xml",
"lib/netstandard1.3/Newtonsoft.Json.dll",
"lib/netstandard1.3/Newtonsoft.Json.xml",
"lib/netstandard2.0/Newtonsoft.Json.dll",
"lib/netstandard2.0/Newtonsoft.Json.xml",
"newtonsoft.json.13.0.3.nupkg.sha512",
"newtonsoft.json.nuspec",
"packageIcon.png"
]
},
"TDengine.Connector/3.1.3": {
"sha512": "dDX+Oex4I0X9yCalU0/YyUN0ecy+8X5xj6N8CoqeLrU6ICYDZgilSGQK9Fh3qmLobhGQvOJWwDpoO73rryHU5Q==",
"type": "package",
"path": "tdengine.connector/3.1.3",
"files": [
".nupkg.metadata",
"docs/README.md",
"image/logo.jpg",
"lib/net45/TDengine.dll",
"lib/net451/TDengine.dll",
"lib/net5.0/TDengine.dll",
"lib/net6.0/TDengine.dll",
"lib/netstandard2.0/TDengine.dll",
"lib/netstandard2.1/TDengine.dll",
"tdengine.connector.3.1.3.nupkg.sha512",
"tdengine.connector.nuspec"
]
}
},
"projectFileDependencyGroups": {
"net6.0": [
"TDengine.Connector >= 3.1.*"
]
},
"packageFolders": {
"/root/.nuget/packages/": {}
},
"project": {
"version": "1.0.0",
"restore": {
"projectUniqueName": "/mnt/e/github/TDengine/docs/examples/csharp/nativesml/nativesml.csproj",
"projectName": "nativesml",
"projectPath": "/mnt/e/github/TDengine/docs/examples/csharp/nativesml/nativesml.csproj",
"packagesPath": "/root/.nuget/packages/",
"outputPath": "/mnt/e/github/TDengine/docs/examples/csharp/nativesml/obj/",
"projectStyle": "PackageReference",
"configFilePaths": [
"/root/.nuget/NuGet/NuGet.Config"
],
"originalTargetFrameworks": [
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],
"sources": {
"https://api.nuget.org/v3/index.json": {}
},
"frameworks": {
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"projectReferences": {}
}
},
"warningProperties": {
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]
}
},
"frameworks": {
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"targetAlias": "net6.0",
"dependencies": {
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"target": "Package",
"version": "[3.1.*, )"
}
},
"imports": [
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"net462",
"net47",
"net471",
"net472",
"net48",
"net481"
],
"assetTargetFallback": true,
"warn": true,
"frameworkReferences": {
"Microsoft.NETCore.App": {
"privateAssets": "all"
}
},
"runtimeIdentifierGraphPath": "/root/.dotnet/sdk/8.0.100/RuntimeIdentifierGraph.json"
}
}
}
}

11
docs/examples/csharp/nativesml/obj/project.nuget.cache
View File

@ -1,11 +0,0 @@
{
"version": 2,
"dgSpecHash": "xbVzGVQru/qLTE5UBOQoTSR5C+6GFj/M4fcB1h/3W6PsWOVoFQLbV4fwAAKt5f5BKxrV1phiwzm2zGYK0fpXBQ==",
"success": true,
"projectFilePath": "/mnt/e/github/TDengine/docs/examples/csharp/nativesml/nativesml.csproj",
"expectedPackageFiles": [
"/root/.nuget/packages/newtonsoft.json/13.0.3/newtonsoft.json.13.0.3.nupkg.sha512",
"/root/.nuget/packages/tdengine.connector/3.1.3/tdengine.connector.3.1.3.nupkg.sha512"
],
"logs": []
}

1
docs/examples/csharp/nativesml/obj/project.packagespec.json
View File

@ -1 +0,0 @@
"restore":{"projectUniqueName":"E:\\github\\TDengine\\docs\\examples\\csharp\\nativesml\\nativesml.csproj","projectName":"nativesml","projectPath":"E:\\github\\TDengine\\docs\\examples\\csharp\\nativesml\\nativesml.csproj","outputPath":"E:\\github\\TDengine\\docs\\examples\\csharp\\nativesml\\obj\\","projectStyle":"PackageReference","originalTargetFrameworks":["net6.0"],"sources":{"C:\\Program Files (x86)\\Microsoft SDKs\\NuGetPackages\\":{},"E:\\github\\taos-connector-dotnet\\src\\resource":{},"https://api.nuget.org/v3/index.json":{}},"frameworks":{"net6.0":{"targetAlias":"net6.0","projectReferences":{}}},"warningProperties":{"warnAsError":["NU1605"]}}"frameworks":{"net6.0":{"targetAlias":"net6.0","dependencies":{"TDengine.Connector":{"target":"Package","version":"[3.1.*, )"}},"imports":["net461","net462","net47","net471","net472","net48","net481"],"assetTargetFallback":true,"warn":true,"frameworkReferences":{"Microsoft.NETCore.App":{"privateAssets":"all"}},"runtimeIdentifierGraphPath":"C:\\Program Files\\dotnet\\sdk\\8.0.202\\RuntimeIdentifierGraph.json"}}

1
docs/examples/csharp/nativesml/obj/rider.project.model.nuget.info
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@ -1 +0,0 @@
17225691407520754

1
docs/examples/csharp/nativesml/obj/rider.project.restore.info
View File

@ -1 +0,0 @@
17225689181017775

4
docs/examples/csharp/optsJSON/Program.cs
View File

@ -42,13 +42,13 @@ namespace TDengineExample
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to insert data with schemaless; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to insert data with schemaless; Err:" + e.Message);
throw; throw;
} }
// ANCHOR_END: main // ANCHOR_END: main

59
docs/examples/csharp/sqlInsert/Program.cs
View File

@ -17,6 +17,7 @@ namespace TDengineExample
CreateDatabaseAndTable(client); CreateDatabaseAndTable(client);
InsertData(client); InsertData(client);
QueryData(client); QueryData(client);
QueryWithReqId(client);
} }
} }
catch (TDengineError e) catch (TDengineError e)
@ -49,13 +50,13 @@ namespace TDengineExample
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to create db and table; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to create db and table; Err:" + e.Message);
throw; throw;
} }
// ANCHOR_END: create_db_and_table // ANCHOR_END: create_db_and_table
@ -76,19 +77,19 @@ namespace TDengineExample
"power.d1002 USING power.meters TAGS(3, 'California.SanFrancisco') " + "power.d1002 USING power.meters TAGS(3, 'California.SanFrancisco') " +
"VALUES " + "VALUES " +
"(NOW + 1a, 10.30000, 218, 0.25000) "; "(NOW + 1a, 10.30000, 218, 0.25000) ";
var affectedRows = client.Exec(insertQuery); var affectedRows = client.Exec(insertQuery);
Console.WriteLine("inserted into " + affectedRows + " rows to power.meters successfully."); Console.WriteLine("insert " + affectedRows + " rows to power.meters successfully.");
} }
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to insert data to power.meters; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to insert data to power.meters; Err:" + e.Message);
throw; throw;
} }
// ANCHOR_END: insert_data // ANCHOR_END: insert_data
@ -96,7 +97,7 @@ namespace TDengineExample
private static void QueryData(ITDengineClient client) private static void QueryData(ITDengineClient client)
{ {
// ANCHOR: query_data // ANCHOR: select_data
try try
{ {
// query data // query data
@ -108,23 +109,59 @@ namespace TDengineExample
var ts = (DateTime)rows.GetValue(0); var ts = (DateTime)rows.GetValue(0);
var current = (float)rows.GetValue(1); var current = (float)rows.GetValue(1);
var location = Encoding.UTF8.GetString((byte[])rows.GetValue(2)); var location = Encoding.UTF8.GetString((byte[])rows.GetValue(2));
Console.WriteLine($"ts: {ts:yyyy-MM-dd HH:mm:ss.fff}, current: {current}, location: {location}"); Console.WriteLine(
$"ts: {ts:yyyy-MM-dd HH:mm:ss.fff}, current: {current}, location: {location}");
} }
} }
} }
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to query data from power.meters; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to query data from power.meters; Err:" + e.Message);
throw; throw;
} }
// ANCHOR_END: query_data // ANCHOR_END: select_data
}
private static void QueryWithReqId(ITDengineClient client)
{
// ANCHOR: query_id
try
{
// query data
var query = "SELECT ts, current, location FROM power.meters limit 1";
// query with request id 3
using (var rows = client.Query(query,3))
{
while (rows.Read())
{
var ts = (DateTime)rows.GetValue(0);
var current = (float)rows.GetValue(1);
var location = Encoding.UTF8.GetString((byte[])rows.GetValue(2));
Console.WriteLine(
$"ts: {ts:yyyy-MM-dd HH:mm:ss.fff}, current: {current}, location: {location}");
}
}
}
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to execute sql with reqId; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw;
}
catch (Exception e)
{
// handle other exceptions
Console.WriteLine("Failed to execute sql with reqId; Err:" + e.Message);
throw;
}
// ANCHOR_END: query_id
} }
} }
} }

4
docs/examples/csharp/stmtInsert/Program.cs
View File

@ -61,13 +61,13 @@ namespace TDengineExample
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to insert to table meters using stmt; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to insert to table meters using stmt; Err:" + e.Message);
throw; throw;
} }
} }

51
docs/examples/csharp/subscribe/Program.cs
View File

@ -71,8 +71,8 @@ namespace TMQExample
{ "msg.with.table.name", "true" }, { "msg.with.table.name", "true" },
{ "enable.auto.commit", "true" }, { "enable.auto.commit", "true" },
{ "auto.commit.interval.ms", "1000" }, { "auto.commit.interval.ms", "1000" },
{ "group.id", "group2" }, { "group.id", "group1" },
{ "client.id", "1" }, { "client.id", "client1" },
{ "td.connect.ip", "127.0.0.1" }, { "td.connect.ip", "127.0.0.1" },
{ "td.connect.user", "root" }, { "td.connect.user", "root" },
{ "td.connect.pass", "taosdata" }, { "td.connect.pass", "taosdata" },
@ -86,13 +86,13 @@ namespace TMQExample
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to create consumer; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to create consumer; Err:" + e.Message);
throw; throw;
} }
@ -117,7 +117,7 @@ namespace TMQExample
{ {
// handle message // handle message
Console.WriteLine( Console.WriteLine(
$"message {{{((DateTime)message.Value["ts"]).ToString("yyyy-MM-dd HH:mm:ss.fff")}, " + $"data {{{((DateTime)message.Value["ts"]).ToString("yyyy-MM-dd HH:mm:ss.fff")}, " +
$"{message.Value["current"]}, {message.Value["voltage"]}, {message.Value["phase"]}}}"); $"{message.Value["current"]}, {message.Value["voltage"]}, {message.Value["phase"]}}}");
} }
} }
@ -126,13 +126,13 @@ namespace TMQExample
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to poll data; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to poll data; Err:" + e.Message);
throw; throw;
} }
// ANCHOR_END: subscribe // ANCHOR_END: subscribe
@ -150,17 +150,35 @@ namespace TMQExample
{ {
consumer.Seek(new TopicPartitionOffset(topicPartition.Topic, topicPartition.Partition, 0)); consumer.Seek(new TopicPartitionOffset(topicPartition.Topic, topicPartition.Partition, 0));
} }
Console.WriteLine("assignment seek to beginning successfully");
// poll data again
for (int i = 0; i < 50; i++)
{
// consume message with using block to ensure the result is disposed
using (var cr = consumer.Consume(100))
{
if (cr == null) continue;
foreach (var message in cr.Message)
{
// handle message
Console.WriteLine(
$"second data polled: {{{((DateTime)message.Value["ts"]).ToString("yyyy-MM-dd HH:mm:ss.fff")}, " +
$"{message.Value["current"]}, {message.Value["voltage"]}, {message.Value["phase"]}}}");
}
break;
}
}
} }
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to seek; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to seek; Err:" + e.Message);
throw; throw;
} }
// ANCHOR_END: seek // ANCHOR_END: seek
@ -187,13 +205,13 @@ namespace TMQExample
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to commit offset; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to commit offset; Err:" + e.Message);
throw; throw;
} }
} }
@ -207,21 +225,24 @@ namespace TMQExample
{ {
// unsubscribe // unsubscribe
consumer.Unsubscribe(); consumer.Unsubscribe();
// close consumer
consumer.Close();
} }
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to unsubscribe consumer; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to unsubscribe consumer; Err:" + e.Message);
throw; throw;
} }
finally
{
// close consumer
consumer.Close();
}
// ANCHOR_END: close // ANCHOR_END: close
} }
} }

12
docs/examples/csharp/wsConnect/Program.cs
View File

@ -9,27 +9,29 @@ namespace Examples
// ANCHOR: main // ANCHOR: main
static void Main(string[] args) static void Main(string[] args)
{ {
var connectionString =
"protocol=WebSocket;host=localhost;port=6041;useSSL=false;username=root;password=taosdata";
try try
{ {
// Connect to TDengine server using WebSocket // Connect to TDengine server using WebSocket
var builder = new ConnectionStringBuilder( var builder = new ConnectionStringBuilder(connectionString);
"protocol=WebSocket;host=localhost;port=6041;useSSL=false;username=root;password=taosdata");
// Open connection with using block, it will close the connection automatically // Open connection with using block, it will close the connection automatically
using (var client = DbDriver.Open(builder)) using (var client = DbDriver.Open(builder))
{ {
Console.WriteLine("connected"); Console.WriteLine("Connected to " + connectionString + " successfully.");
} }
} }
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to connect to " + connectionString + "; ErrCode:" + e.Code +
"; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to connect to " + connectionString + "; Err:" + e.Message);
throw; throw;
} }
} }

22
docs/examples/csharp/wsInsert/Program.cs
View File

@ -50,13 +50,13 @@ namespace Examples
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to create db and table; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to create db and table; Err:" + e.Message);
throw; throw;
} }
// ANCHOR_END: create_db_and_table // ANCHOR_END: create_db_and_table
@ -78,18 +78,18 @@ namespace Examples
"VALUES " + "VALUES " +
"(NOW + 1a, 10.30000, 218, 0.25000) "; "(NOW + 1a, 10.30000, 218, 0.25000) ";
var affectedRows = client.Exec(insertQuery); var affectedRows = client.Exec(insertQuery);
Console.WriteLine("inserted " + affectedRows + " rows to power.meters successfully."); Console.WriteLine("insert " + affectedRows + " rows to power.meters successfully.");
} }
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to insert data to power.meters; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to insert data to power.meters; Err:" + e.Message);
throw; throw;
} }
// ANCHOR_END: insert_data // ANCHOR_END: insert_data
@ -117,13 +117,13 @@ namespace Examples
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to query data from power.meters; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to query data from power.meters; Err:" + e.Message);
throw; throw;
} }
// ANCHOR_END: select_data // ANCHOR_END: select_data
@ -136,8 +136,8 @@ namespace Examples
{ {
// query data // query data
var query = "SELECT ts, current, location FROM power.meters limit 1"; var query = "SELECT ts, current, location FROM power.meters limit 1";
// query with request id 1 // query with request id 3
using (var rows = client.Query(query,1)) using (var rows = client.Query(query,3))
{ {
while (rows.Read()) while (rows.Read())
{ {
@ -152,13 +152,13 @@ namespace Examples
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to execute sql with reqId; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to execute sql with reqId; Err:" + e.Message);
throw; throw;
} }
// ANCHOR_END: query_id // ANCHOR_END: query_id

4
docs/examples/csharp/wsStmt/Program.cs
View File

@ -62,13 +62,13 @@ namespace Examples
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to insert to table meters using stmt; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to insert to table meters using stmt; Err:" + e.Message);
throw; throw;
} }
} }

4
docs/examples/csharp/wssml/Program.cs
View File

@ -42,13 +42,13 @@ namespace TDengineExample
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to insert data with schemaless; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to insert data with schemaless; Err:" + e.Message);
throw; throw;
} }
} }

149
docs/examples/csharp/wssml/obj/project.assets.json
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@ -1,149 +0,0 @@
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<PropertyGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
<RestoreSuccess Condition=" '$(RestoreSuccess)' == '' ">True</RestoreSuccess>
<RestoreTool Condition=" '$(RestoreTool)' == '' ">NuGet</RestoreTool>
<ProjectAssetsFile Condition=" '$(ProjectAssetsFile)' == '' ">$(MSBuildThisFileDirectory)project.assets.json</ProjectAssetsFile>
<NuGetPackageRoot Condition=" '$(NuGetPackageRoot)' == '' ">/root/.nuget/packages/</NuGetPackageRoot>
<NuGetPackageFolders Condition=" '$(NuGetPackageFolders)' == '' ">/root/.nuget/packages/</NuGetPackageFolders>
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<NuGetToolVersion Condition=" '$(NuGetToolVersion)' == '' ">6.8.0</NuGetToolVersion>
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2
docs/examples/csharp/wssml/obj/wssml.csproj.nuget.g.targets
View File

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51
docs/examples/csharp/wssubscribe/Program.cs
View File

@ -72,8 +72,8 @@ namespace TMQExample
{ "msg.with.table.name", "true" }, { "msg.with.table.name", "true" },
{ "enable.auto.commit", "true" }, { "enable.auto.commit", "true" },
{ "auto.commit.interval.ms", "1000" }, { "auto.commit.interval.ms", "1000" },
{ "group.id", "group2" }, { "group.id", "group1" },
{ "client.id", "1" }, { "client.id", "client1" },
{ "td.connect.ip", "127.0.0.1" }, { "td.connect.ip", "127.0.0.1" },
{ "td.connect.user", "root" }, { "td.connect.user", "root" },
{ "td.connect.pass", "taosdata" }, { "td.connect.pass", "taosdata" },
@ -87,13 +87,13 @@ namespace TMQExample
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to create consumer; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to create consumer; Err:" + e.Message);
throw; throw;
} }
@ -118,7 +118,7 @@ namespace TMQExample
{ {
// handle message // handle message
Console.WriteLine( Console.WriteLine(
$"message {{{((DateTime)message.Value["ts"]).ToString("yyyy-MM-dd HH:mm:ss.fff")}, " + $"data {{{((DateTime)message.Value["ts"]).ToString("yyyy-MM-dd HH:mm:ss.fff")}, " +
$"{message.Value["current"]}, {message.Value["voltage"]}, {message.Value["phase"]}}}"); $"{message.Value["current"]}, {message.Value["voltage"]}, {message.Value["phase"]}}}");
} }
} }
@ -127,13 +127,13 @@ namespace TMQExample
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to poll data; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to poll data; Err:" + e.Message);
throw; throw;
} }
// ANCHOR_END: subscribe // ANCHOR_END: subscribe
@ -151,17 +151,35 @@ namespace TMQExample
{ {
consumer.Seek(new TopicPartitionOffset(topicPartition.Topic, topicPartition.Partition, 0)); consumer.Seek(new TopicPartitionOffset(topicPartition.Topic, topicPartition.Partition, 0));
} }
Console.WriteLine("assignment seek to beginning successfully");
// poll data again
for (int i = 0; i < 50; i++)
{
// consume message with using block to ensure the result is disposed
using (var cr = consumer.Consume(100))
{
if (cr == null) continue;
foreach (var message in cr.Message)
{
// handle message
Console.WriteLine(
$"second data polled: {{{((DateTime)message.Value["ts"]).ToString("yyyy-MM-dd HH:mm:ss.fff")}, " +
$"{message.Value["current"]}, {message.Value["voltage"]}, {message.Value["phase"]}}}");
}
break;
}
}
} }
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to seek; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to seek; Err:" + e.Message);
throw; throw;
} }
// ANCHOR_END: seek // ANCHOR_END: seek
@ -188,13 +206,13 @@ namespace TMQExample
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to commit offset; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to commit offset; Err:" + e.Message);
throw; throw;
} }
} }
@ -208,21 +226,24 @@ namespace TMQExample
{ {
// unsubscribe // unsubscribe
consumer.Unsubscribe(); consumer.Unsubscribe();
// close consumer
consumer.Close();
} }
catch (TDengineError e) catch (TDengineError e)
{ {
// handle TDengine error // handle TDengine error
Console.WriteLine(e.Message); Console.WriteLine("Failed to unsubscribe consumer; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw; throw;
} }
catch (Exception e) catch (Exception e)
{ {
// handle other exceptions // handle other exceptions
Console.WriteLine(e.Message); Console.WriteLine("Failed to unsubscribe consumer; Err:" + e.Message);
throw; throw;
} }
finally
{
// close consumer
consumer.Close();
}
// ANCHOR_END: close // ANCHOR_END: close
} }
} }

150
docs/examples/csharp/wssubscribe/obj/project.assets.json
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"targetAlias": "net6.0",
"dependencies": {
"TDengine.Connector": {
"target": "Package",
"version": "[3.1.*, )",
"generatePathProperty": true
}
},
"imports": [
"net461",
"net462",
"net47",
"net471",
"net472",
"net48",
"net481"
],
"assetTargetFallback": true,
"warn": true,
"frameworkReferences": {
"Microsoft.NETCore.App": {
"privateAssets": "all"
}
},
"runtimeIdentifierGraphPath": "/root/.dotnet/sdk/8.0.100/RuntimeIdentifierGraph.json"
}
}
}
}

11
docs/examples/csharp/wssubscribe/obj/project.nuget.cache
View File

@ -1,11 +0,0 @@
{
"version": 2,
"dgSpecHash": "iYS3B811DdocWqUXN2aMJdEwvfDVCixB5mK4XYN+98yFFNdPOU8hN4wQCxaOSFM7xKpvlmJvQPwkMetGBbFO8g==",
"success": true,
"projectFilePath": "/mnt/e/github/TDengine/docs/examples/csharp/wssubscribe/wssubscribe.csproj",
"expectedPackageFiles": [
"/root/.nuget/packages/newtonsoft.json/13.0.3/newtonsoft.json.13.0.3.nupkg.sha512",
"/root/.nuget/packages/tdengine.connector/3.1.3/tdengine.connector.3.1.3.nupkg.sha512"
],
"logs": []
}

1
docs/examples/csharp/wssubscribe/obj/project.packagespec.json
View File

@ -1 +0,0 @@
"restore":{"projectUniqueName":"E:\\github\\TDengine\\docs\\examples\\csharp\\wssubscribe\\wssubscribe.csproj","projectName":"wssubscribe","projectPath":"E:\\github\\TDengine\\docs\\examples\\csharp\\wssubscribe\\wssubscribe.csproj","outputPath":"E:\\github\\TDengine\\docs\\examples\\csharp\\wssubscribe\\obj\\","projectStyle":"PackageReference","originalTargetFrameworks":["net6.0"],"sources":{"C:\\Program Files (x86)\\Microsoft SDKs\\NuGetPackages\\":{},"E:\\github\\taos-connector-dotnet\\src\\resource":{},"https://api.nuget.org/v3/index.json":{}},"frameworks":{"net6.0":{"targetAlias":"net6.0","projectReferences":{}}},"warningProperties":{"warnAsError":["NU1605"]}}"frameworks":{"net6.0":{"targetAlias":"net6.0","dependencies":{"TDengine.Connector":{"target":"Package","version":"[3.1.*, )","generatePathProperty":true}},"imports":["net461","net462","net47","net471","net472","net48","net481"],"assetTargetFallback":true,"warn":true,"frameworkReferences":{"Microsoft.NETCore.App":{"privateAssets":"all"}},"runtimeIdentifierGraphPath":"C:\\Program Files\\dotnet\\sdk\\8.0.202\\RuntimeIdentifierGraph.json"}}

1
docs/examples/csharp/wssubscribe/obj/rider.project.model.nuget.info
View File

@ -1 +0,0 @@
17225691490262111

1
docs/examples/csharp/wssubscribe/obj/rider.project.restore.info
View File

@ -1 +0,0 @@
17225689180408669

68
docs/examples/csharp/wssubscribe/obj/wssubscribe.csproj.nuget.dgspec.json
View File

@ -1,68 +0,0 @@
{
"format": 1,
"restore": {
"/mnt/e/github/TDengine/docs/examples/csharp/wssubscribe/wssubscribe.csproj": {}
},
"projects": {
"/mnt/e/github/TDengine/docs/examples/csharp/wssubscribe/wssubscribe.csproj": {
"version": "1.0.0",
"restore": {
"projectUniqueName": "/mnt/e/github/TDengine/docs/examples/csharp/wssubscribe/wssubscribe.csproj",
"projectName": "wssubscribe",
"projectPath": "/mnt/e/github/TDengine/docs/examples/csharp/wssubscribe/wssubscribe.csproj",
"packagesPath": "/root/.nuget/packages/",
"outputPath": "/mnt/e/github/TDengine/docs/examples/csharp/wssubscribe/obj/",
"projectStyle": "PackageReference",
"configFilePaths": [
"/root/.nuget/NuGet/NuGet.Config"
],
"originalTargetFrameworks": [
"net6.0"
],
"sources": {
"https://api.nuget.org/v3/index.json": {}
},
"frameworks": {
"net6.0": {
"targetAlias": "net6.0",
"projectReferences": {}
}
},
"warningProperties": {
"warnAsError": [
"NU1605"
]
}
},
"frameworks": {
"net6.0": {
"targetAlias": "net6.0",
"dependencies": {
"TDengine.Connector": {
"target": "Package",
"version": "[3.1.*, )",
"generatePathProperty": true
}
},
"imports": [
"net461",
"net462",
"net47",
"net471",
"net472",
"net48",
"net481"
],
"assetTargetFallback": true,
"warn": true,
"frameworkReferences": {
"Microsoft.NETCore.App": {
"privateAssets": "all"
}
},
"runtimeIdentifierGraphPath": "/root/.dotnet/sdk/8.0.100/RuntimeIdentifierGraph.json"
}
}
}
}
}

18
docs/examples/csharp/wssubscribe/obj/wssubscribe.csproj.nuget.g.props
View File

@ -1,18 +0,0 @@
<?xml version="1.0" encoding="utf-8" standalone="no"?>
<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
<RestoreSuccess Condition=" '$(RestoreSuccess)' == '' ">True</RestoreSuccess>
<RestoreTool Condition=" '$(RestoreTool)' == '' ">NuGet</RestoreTool>
<ProjectAssetsFile Condition=" '$(ProjectAssetsFile)' == '' ">$(MSBuildThisFileDirectory)project.assets.json</ProjectAssetsFile>
<NuGetPackageRoot Condition=" '$(NuGetPackageRoot)' == '' ">/root/.nuget/packages/</NuGetPackageRoot>
<NuGetPackageFolders Condition=" '$(NuGetPackageFolders)' == '' ">/root/.nuget/packages/</NuGetPackageFolders>
<NuGetProjectStyle Condition=" '$(NuGetProjectStyle)' == '' ">PackageReference</NuGetProjectStyle>
<NuGetToolVersion Condition=" '$(NuGetToolVersion)' == '' ">6.8.0</NuGetToolVersion>
</PropertyGroup>
<ItemGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
<SourceRoot Include="/root/.nuget/packages/" />
</ItemGroup>
<PropertyGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
<PkgTDengine_Connector Condition=" '$(PkgTDengine_Connector)' == '' ">/root/.nuget/packages/tdengine.connector/3.1.3</PkgTDengine_Connector>
</PropertyGroup>
</Project>

2
docs/examples/csharp/wssubscribe/obj/wssubscribe.csproj.nuget.g.targets
View File

@ -1,2 +0,0 @@
<?xml version="1.0" encoding="utf-8" standalone="no"?>
<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" />

2
docs/examples/csharp/wssubscribe/wssubscribe.csproj
View File

@ -7,6 +7,6 @@
<Nullable>enable</Nullable> <Nullable>enable</Nullable>
</PropertyGroup> </PropertyGroup>
<ItemGroup> <ItemGroup>
<PackageReference Include="TDengine.Connector" Version="3.1.*" GeneratePathProperty="true" /> <PackageReference Include="TDengine.Connector" Version="3.1.3" GeneratePathProperty="true" />
</ItemGroup> </ItemGroup>
</Project> </Project>

3
docs/examples/go/connect/cgoexample/main.go
View File

@ -16,8 +16,7 @@ func main() {
taos, err := sql.Open("taosSql", taosDSN) taos, err := sql.Open("taosSql", taosDSN)
if err != nil { if err != nil {
log.Fatalln("failed to connect TDengine, err:", err) log.Fatalln("failed to connect TDengine, err:", err)
return
} }
fmt.Println("Connected") fmt.Println("Connected to " + taosDSN + " successfully.")
defer taos.Close() defer taos.Close()
} }

1
docs/examples/go/connect/connpool/main.go
View File

@ -16,7 +16,6 @@ func main() {
taos, err := sql.Open("taosSql", taosDSN) taos, err := sql.Open("taosSql", taosDSN)
if err != nil { if err != nil {
log.Fatalln("failed to connect TDengine, err:", err) log.Fatalln("failed to connect TDengine, err:", err)
return
} }
fmt.Println("Connected") fmt.Println("Connected")
defer taos.Close() defer taos.Close()

3
docs/examples/go/connect/restexample/main.go
View File

@ -16,8 +16,7 @@ func main() {
taos, err := sql.Open("taosRestful", taosDSN) taos, err := sql.Open("taosRestful", taosDSN)
if err != nil { if err != nil {
log.Fatalln("failed to connect TDengine, err:", err) log.Fatalln("failed to connect TDengine, err:", err)
return
} }
fmt.Println("Connected") fmt.Println("Connected to " + taosDSN + " successfully.")
defer taos.Close() defer taos.Close()
} }

3
docs/examples/go/connect/wsexample/main.go
View File

@ -16,8 +16,7 @@ func main() {
taos, err := sql.Open("taosWS", taosDSN) taos, err := sql.Open("taosWS", taosDSN)
if err != nil { if err != nil {
log.Fatalln("failed to connect TDengine, err:", err) log.Fatalln("failed to connect TDengine, err:", err)
return
} }
fmt.Println("Connected") fmt.Println("Connected to " + taosDSN + " successfully.")
defer taos.Close() defer taos.Close()
} }

13
docs/examples/go/queryreqid/main.go
View File

@ -4,6 +4,7 @@ import (
"context" "context"
"database/sql" "database/sql"
"fmt" "fmt"
"log"
"time" "time"
_ "github.com/taosdata/driver-go/v3/taosSql" _ "github.com/taosdata/driver-go/v3/taosSql"
@ -12,7 +13,7 @@ import (
func main() { func main() {
db, err := sql.Open("taosSql", "root:taosdata@tcp(localhost:6030)/") db, err := sql.Open("taosSql", "root:taosdata@tcp(localhost:6030)/")
if err != nil { if err != nil {
panic(err) log.Fatal("Open database error: ", err)
} }
defer db.Close() defer db.Close()
initEnv(db) initEnv(db)
@ -22,7 +23,7 @@ func main() {
// execute query with context // execute query with context
rows, err := db.QueryContext(ctx, "SELECT ts, current, location FROM power.meters limit 1") rows, err := db.QueryContext(ctx, "SELECT ts, current, location FROM power.meters limit 1")
if err != nil { if err != nil {
panic(err) log.Fatal("Query error: ", err)
} }
for rows.Next() { for rows.Next() {
var ( var (
@ -32,7 +33,7 @@ func main() {
) )
err = rows.Scan(&ts, &current, &location) err = rows.Scan(&ts, &current, &location)
if err != nil { if err != nil {
panic(err) log.Fatal("Scan error: ", err)
} }
fmt.Printf("ts: %s, current: %f, location: %s\n", ts, current, location) fmt.Printf("ts: %s, current: %f, location: %s\n", ts, current, location)
} }
@ -42,14 +43,14 @@ func main() {
func initEnv(conn *sql.DB) { func initEnv(conn *sql.DB) {
_, err := conn.Exec("CREATE DATABASE IF NOT EXISTS power") _, err := conn.Exec("CREATE DATABASE IF NOT EXISTS power")
if err != nil { if err != nil {
panic(err) log.Fatal("Create database error: ", err)
} }
_, err = conn.Exec("CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))") _, err = conn.Exec("CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))")
if err != nil { if err != nil {
panic(err) log.Fatal("Create table error: ", err)
} }
_, err = conn.Exec("INSERT INTO power.d1001 USING power.meters TAGS (2, 'California.SanFrancisco') VALUES (NOW , 10.2, 219, 0.32)") _, err = conn.Exec("INSERT INTO power.d1001 USING power.meters TAGS (2, 'California.SanFrancisco') VALUES (NOW , 10.2, 219, 0.32)")
if err != nil { if err != nil {
panic(err) log.Fatal("Insert data error: ", err)
} }
} }

14
docs/examples/go/schemaless/native/main.go
View File

@ -1,6 +1,8 @@
package main package main
import ( import (
"log"
"github.com/taosdata/driver-go/v3/af" "github.com/taosdata/driver-go/v3/af"
) )
@ -12,30 +14,30 @@ func main() {
conn, err := af.Open(host, "root", "taosdata", "", 0) conn, err := af.Open(host, "root", "taosdata", "", 0)
if err != nil { if err != nil {
panic(err) log.Fatal("failed to connect TDengine, err:", err)
} }
defer conn.Close() defer conn.Close()
_, err = conn.Exec("CREATE DATABASE IF NOT EXISTS power") _, err = conn.Exec("CREATE DATABASE IF NOT EXISTS power")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to create database, err:", err)
} }
_, err = conn.Exec("USE power") _, err = conn.Exec("USE power")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to use database, err:", err)
} }
// insert influxdb line protocol // insert influxdb line protocol
err = conn.InfluxDBInsertLines([]string{lineDemo}, "ms") err = conn.InfluxDBInsertLines([]string{lineDemo}, "ms")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to insert influxdb line protocol, err:", err)
} }
// insert opentsdb telnet protocol // insert opentsdb telnet protocol
err = conn.OpenTSDBInsertTelnetLines([]string{telnetDemo}) err = conn.OpenTSDBInsertTelnetLines([]string{telnetDemo})
if err != nil { if err != nil {
panic(err) log.Fatal("failed to insert opentsdb telnet line protocol, err:", err)
} }
// insert opentsdb json protocol // insert opentsdb json protocol
err = conn.OpenTSDBInsertJsonPayload(jsonDemo) err = conn.OpenTSDBInsertJsonPayload(jsonDemo)
if err != nil { if err != nil {
panic(err) log.Fatal("failed to insert opentsdb json format protocol, err:", err)
} }
} }

15
docs/examples/go/schemaless/ws/main.go
View File

@ -19,12 +19,12 @@ func main() {
db, err := sql.Open("taosWS", fmt.Sprintf("root:taosdata@ws(%s:6041)/", host)) db, err := sql.Open("taosWS", fmt.Sprintf("root:taosdata@ws(%s:6041)/", host))
if err != nil { if err != nil {
log.Fatal(err) log.Fatal("failed to connect TDengine, err:", err)
} }
defer db.Close() defer db.Close()
_, err = db.Exec("CREATE DATABASE IF NOT EXISTS power") _, err = db.Exec("CREATE DATABASE IF NOT EXISTS power")
if err != nil { if err != nil {
log.Fatal(err) log.Fatal("failed to create database, err:", err)
} }
s, err := schemaless.NewSchemaless(schemaless.NewConfig("ws://localhost:6041", 1, s, err := schemaless.NewSchemaless(schemaless.NewConfig("ws://localhost:6041", 1,
schemaless.SetDb("power"), schemaless.SetDb("power"),
@ -32,26 +32,23 @@ func main() {
schemaless.SetWriteTimeout(10*time.Second), schemaless.SetWriteTimeout(10*time.Second),
schemaless.SetUser("root"), schemaless.SetUser("root"),
schemaless.SetPassword("taosdata"), schemaless.SetPassword("taosdata"),
schemaless.SetErrorHandler(func(err error) {
log.Fatal(err)
}),
)) ))
if err != nil { if err != nil {
panic(err) log.Fatal("failed to create schemaless connection, err:", err)
} }
// insert influxdb line protocol // insert influxdb line protocol
err = s.Insert(lineDemo, schemaless.InfluxDBLineProtocol, "ms", 0, common.GetReqID()) err = s.Insert(lineDemo, schemaless.InfluxDBLineProtocol, "ms", 0, common.GetReqID())
if err != nil { if err != nil {
panic(err) log.Fatal("failed to insert influxdb line protocol, err:", err)
} }
// insert opentsdb telnet line protocol // insert opentsdb telnet line protocol
err = s.Insert(telnetDemo, schemaless.OpenTSDBTelnetLineProtocol, "ms", 0, common.GetReqID()) err = s.Insert(telnetDemo, schemaless.OpenTSDBTelnetLineProtocol, "ms", 0, common.GetReqID())
if err != nil { if err != nil {
panic(err) log.Fatal("failed to insert opentsdb telnet line protocol, err:", err)
} }
// insert opentsdb json format protocol // insert opentsdb json format protocol
err = s.Insert(jsonDemo, schemaless.OpenTSDBJsonFormatProtocol, "s", 0, common.GetReqID()) err = s.Insert(jsonDemo, schemaless.OpenTSDBJsonFormatProtocol, "s", 0, common.GetReqID())
if err != nil { if err != nil {
panic(err) log.Fatal("failed to insert opentsdb json format protocol, err:", err)
} }
} }

21
docs/examples/go/sqlquery/main.go
View File

@ -3,6 +3,7 @@ package main
import ( import (
"database/sql" "database/sql"
"fmt" "fmt"
"log"
"time" "time"
_ "github.com/taosdata/driver-go/v3/taosSql" _ "github.com/taosdata/driver-go/v3/taosSql"
@ -11,35 +12,35 @@ import (
func main() { func main() {
db, err := sql.Open("taosSql", "root:taosdata@tcp(localhost:6030)/") db, err := sql.Open("taosSql", "root:taosdata@tcp(localhost:6030)/")
if err != nil { if err != nil {
panic(err) log.Fatal("open database failed:", err)
} }
defer db.Close() defer db.Close()
// ANCHOR: create_db_and_table // ANCHOR: create_db_and_table
// create database // create database
res, err := db.Exec("CREATE DATABASE IF NOT EXISTS power") res, err := db.Exec("CREATE DATABASE IF NOT EXISTS power")
if err != nil { if err != nil {
panic(err) log.Fatal("create database failed:", err)
} }
affected, err := res.RowsAffected() affected, err := res.RowsAffected()
if err != nil { if err != nil {
panic(err) log.Fatal("get affected rows failed:", err)
} }
fmt.Println("create database affected:", affected) fmt.Println("create database affected:", affected)
// use database // use database
res, err = db.Exec("USE power") res, err = db.Exec("USE power")
if err != nil { if err != nil {
panic(err) log.Fatal("use database failed:", err)
} }
affected, err = res.RowsAffected() affected, err = res.RowsAffected()
if err != nil { if err != nil {
panic(err) log.Fatal("get affected rows failed:", err)
} }
fmt.Println("use database affected:", affected) fmt.Println("use database affected:", affected)
// create table // create table
res, err = db.Exec("CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))") res, err = db.Exec("CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))")
affected, err = res.RowsAffected() affected, err = res.RowsAffected()
if err != nil { if err != nil {
panic(err) log.Fatal("create table failed:", err)
} }
fmt.Println("create table affected:", affected) fmt.Println("create table affected:", affected)
// ANCHOR_END: create_db_and_table // ANCHOR_END: create_db_and_table
@ -56,11 +57,11 @@ func main() {
"(NOW + 1a, 10.30000, 218, 0.25000) " "(NOW + 1a, 10.30000, 218, 0.25000) "
res, err = db.Exec(insertQuery) res, err = db.Exec(insertQuery)
if err != nil { if err != nil {
panic(err) log.Fatal("insert data failed:", err)
} }
affected, err = res.RowsAffected() affected, err = res.RowsAffected()
if err != nil { if err != nil {
panic(err) log.Fatal("get affected rows failed:", err)
} }
// you can check affectedRows here // you can check affectedRows here
fmt.Println("insert data affected:", affected) fmt.Println("insert data affected:", affected)
@ -69,7 +70,7 @@ func main() {
// query data, make sure the database and table are created before // query data, make sure the database and table are created before
rows, err := db.Query("SELECT ts, current, location FROM power.meters limit 100") rows, err := db.Query("SELECT ts, current, location FROM power.meters limit 100")
if err != nil { if err != nil {
panic(err) log.Fatal("query data failed:", err)
} }
for rows.Next() { for rows.Next() {
var ( var (
@ -79,7 +80,7 @@ func main() {
) )
err = rows.Scan(&ts, &current, &location) err = rows.Scan(&ts, &current, &location)
if err != nil { if err != nil {
panic(err) log.Fatal("scan data failed:", err)
} }
// you can check data here // you can check data here
fmt.Printf("ts: %s, current: %f, location: %s\n", ts, current, location) fmt.Printf("ts: %s, current: %f, location: %s\n", ts, current, location)

21
docs/examples/go/stmt/native/main.go
View File

@ -2,6 +2,7 @@ package main
import ( import (
"fmt" "fmt"
"log"
"math/rand" "math/rand"
"time" "time"
@ -16,28 +17,28 @@ func main() {
numOfRow := 10 numOfRow := 10
db, err := af.Open(host, "root", "taosdata", "", 0) db, err := af.Open(host, "root", "taosdata", "", 0)
if err != nil { if err != nil {
panic(err) log.Fatal("failed to connect TDengine, err:", err)
} }
defer db.Close() defer db.Close()
// prepare database and table // prepare database and table
_, err = db.Exec("CREATE DATABASE IF NOT EXISTS power") _, err = db.Exec("CREATE DATABASE IF NOT EXISTS power")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to create database, err:", err)
} }
_, err = db.Exec("USE power") _, err = db.Exec("USE power")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to use database, err:", err)
} }
_, err = db.Exec("CREATE STABLE IF NOT EXISTS meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))") _, err = db.Exec("CREATE STABLE IF NOT EXISTS meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to create table, err:", err)
} }
// prepare statement // prepare statement
sql := "INSERT INTO ? USING meters TAGS(?,?) VALUES (?,?,?,?)" sql := "INSERT INTO ? USING meters TAGS(?,?) VALUES (?,?,?,?)"
stmt := db.Stmt() stmt := db.Stmt()
err = stmt.Prepare(sql) err = stmt.Prepare(sql)
if err != nil { if err != nil {
panic(err) log.Fatal("failed to prepare statement, err:", err)
} }
for i := 1; i <= numOfSubTable; i++ { for i := 1; i <= numOfSubTable; i++ {
tableName := fmt.Sprintf("d_bind_%d", i) tableName := fmt.Sprintf("d_bind_%d", i)
@ -45,7 +46,7 @@ func main() {
// set tableName and tags // set tableName and tags
err = stmt.SetTableNameWithTags(tableName, tags) err = stmt.SetTableNameWithTags(tableName, tags)
if err != nil { if err != nil {
panic(err) log.Fatal("failed to set table name and tags, err:", err)
} }
// bind column data // bind column data
current := time.Now() current := time.Now()
@ -57,18 +58,18 @@ func main() {
AddFloat(rand.Float32()) AddFloat(rand.Float32())
err = stmt.BindRow(row) err = stmt.BindRow(row)
if err != nil { if err != nil {
panic(err) log.Fatal("failed to bind row, err:", err)
} }
} }
// add batch // add batch
err = stmt.AddBatch() err = stmt.AddBatch()
if err != nil { if err != nil {
panic(err) log.Fatal("failed to add batch, err:", err)
} }
// execute batch // execute batch
err = stmt.Execute() err = stmt.Execute()
if err != nil { if err != nil {
panic(err) log.Fatal("failed to execute batch, err:", err)
} }
// get affected rows // get affected rows
affected := stmt.GetAffectedRows() affected := stmt.GetAffectedRows()
@ -77,6 +78,6 @@ func main() {
} }
err = stmt.Close() err = stmt.Close()
if err != nil { if err != nil {
panic(err) log.Fatal("failed to close statement, err:", err)
} }
} }

27
docs/examples/go/stmt/ws/main.go
View File

@ -3,6 +3,7 @@ package main
import ( import (
"database/sql" "database/sql"
"fmt" "fmt"
"log"
"math/rand" "math/rand"
"time" "time"
@ -18,17 +19,17 @@ func main() {
numOfRow := 10 numOfRow := 10
db, err := sql.Open("taosRestful", fmt.Sprintf("root:taosdata@http(%s:6041)/", host)) db, err := sql.Open("taosRestful", fmt.Sprintf("root:taosdata@http(%s:6041)/", host))
if err != nil { if err != nil {
panic(err) log.Fatal("failed to connect TDengine, err:", err)
} }
defer db.Close() defer db.Close()
// prepare database and table // prepare database and table
_, err = db.Exec("CREATE DATABASE IF NOT EXISTS power") _, err = db.Exec("CREATE DATABASE IF NOT EXISTS power")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to create database, err:", err)
} }
_, err = db.Exec("CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))") _, err = db.Exec("CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to create table, err:", err)
} }
config := stmt.NewConfig(fmt.Sprintf("ws://%s:6041", host), 0) config := stmt.NewConfig(fmt.Sprintf("ws://%s:6041", host), 0)
@ -40,17 +41,17 @@ func main() {
connector, err := stmt.NewConnector(config) connector, err := stmt.NewConnector(config)
if err != nil { if err != nil {
panic(err) log.Fatal("failed to create stmt connector, err:", err)
} }
// // prepare statement // prepare statement
sql := "INSERT INTO ? USING meters TAGS(?,?) VALUES (?,?,?,?)" sql := "INSERT INTO ? USING meters TAGS(?,?) VALUES (?,?,?,?)"
stmt, err := connector.Init() stmt, err := connector.Init()
if err != nil { if err != nil {
panic(err) log.Fatal("failed to init stmt, err:", err)
} }
err = stmt.Prepare(sql) err = stmt.Prepare(sql)
if err != nil { if err != nil {
panic(err) log.Fatal("failed to prepare stmt, err:", err)
} }
for i := 1; i <= numOfSubTable; i++ { for i := 1; i <= numOfSubTable; i++ {
tableName := fmt.Sprintf("d_bind_%d", i) tableName := fmt.Sprintf("d_bind_%d", i)
@ -60,12 +61,12 @@ func main() {
// set tableName // set tableName
err = stmt.SetTableName(tableName) err = stmt.SetTableName(tableName)
if err != nil { if err != nil {
panic(err) log.Fatal("failed to set table name, err:", err)
} }
// set tags // set tags
err = stmt.SetTags(tags, tagsType) err = stmt.SetTags(tags, tagsType)
if err != nil { if err != nil {
panic(err) log.Fatal("failed to set tags, err:", err)
} }
// bind column data // bind column data
current := time.Now() current := time.Now()
@ -77,18 +78,18 @@ func main() {
columnData[3] = param.NewParam(1).AddFloat(rand.Float32()) columnData[3] = param.NewParam(1).AddFloat(rand.Float32())
err = stmt.BindParam(columnData, columnType) err = stmt.BindParam(columnData, columnType)
if err != nil { if err != nil {
panic(err) log.Fatal("failed to bind param, err:", err)
} }
} }
// add batch // add batch
err = stmt.AddBatch() err = stmt.AddBatch()
if err != nil { if err != nil {
panic(err) log.Fatal("failed to add batch, err:", err)
} }
// execute batch // execute batch
err = stmt.Exec() err = stmt.Exec()
if err != nil { if err != nil {
panic(err) log.Fatal("failed to exec stmt, err:", err)
} }
// get affected rows // get affected rows
affected := stmt.GetAffectedRows() affected := stmt.GetAffectedRows()
@ -97,6 +98,6 @@ func main() {
} }
err = stmt.Close() err = stmt.Close()
if err != nil { if err != nil {
panic(err) log.Fatal("failed to close stmt, err:", err)
} }
} }

55
docs/examples/go/tmq/native/main.go
View File

@ -3,6 +3,7 @@ package main
import ( import (
"database/sql" "database/sql"
"fmt" "fmt"
"log"
"time" "time"
"github.com/taosdata/driver-go/v3/af/tmq" "github.com/taosdata/driver-go/v3/af/tmq"
@ -16,7 +17,7 @@ func main() {
// init env // init env
conn, err := sql.Open("taosSql", "root:taosdata@tcp(127.0.0.1:6030)/") conn, err := sql.Open("taosSql", "root:taosdata@tcp(127.0.0.1:6030)/")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to connect TDengine, err:", err)
} }
defer func() { defer func() {
conn.Close() conn.Close()
@ -31,17 +32,17 @@ func main() {
"msg.with.table.name": "true", "msg.with.table.name": "true",
"enable.auto.commit": "true", "enable.auto.commit": "true",
"auto.commit.interval.ms": "1000", "auto.commit.interval.ms": "1000",
"group.id": "group2", "group.id": "group1",
"client.id": "1", "client.id": "client1",
}) })
if err != nil { if err != nil {
panic(err) log.Fatal("failed to create consumer, err:", err)
} }
// ANCHOR_END: create_consumer // ANCHOR_END: create_consumer
// ANCHOR: subscribe // ANCHOR: subscribe
err = consumer.Subscribe("topic_meters", nil) err = consumer.Subscribe("topic_meters", nil)
if err != nil { if err != nil {
panic(err) log.Fatal("failed to subscribe, err:", err)
} }
for i := 0; i < 50; i++ { for i := 0; i < 50; i++ {
ev := consumer.Poll(100) ev := consumer.Poll(100)
@ -49,23 +50,23 @@ func main() {
switch e := ev.(type) { switch e := ev.(type) {
case *tmqcommon.DataMessage: case *tmqcommon.DataMessage:
// process your data here // process your data here
fmt.Printf("get message:%v\n", e) fmt.Printf("data:%v\n", e)
// ANCHOR: commit_offset // ANCHOR: commit_offset
// commit offset // commit offset
topicPartition, err := consumer.CommitOffsets([]tmqcommon.TopicPartition{e.TopicPartition}) topicPartition, err := consumer.CommitOffsets([]tmqcommon.TopicPartition{e.TopicPartition})
if err != nil { if err != nil {
panic(err) log.Fatal("failed to commit offset, err:", err)
} }
fmt.Println(topicPartition) fmt.Println(topicPartition)
// ANCHOR_END: commit_offset // ANCHOR_END: commit_offset
case tmqcommon.Error: case tmqcommon.Error:
fmt.Printf("%% Error: %v: %v\n", e.Code(), e) fmt.Printf("%% Error: %v: %v\n", e.Code(), e)
panic(e) log.Fatal("failed to get message, err:", e)
} }
// commit all offsets // commit all offsets
topicPartition, err := consumer.Commit() topicPartition, err := consumer.Commit()
if err != nil { if err != nil {
panic(err) log.Fatal("failed to commit, err:", err)
} }
fmt.Println(topicPartition) fmt.Println(topicPartition)
@ -76,7 +77,7 @@ func main() {
// get assignment // get assignment
partitions, err := consumer.Assignment() partitions, err := consumer.Assignment()
if err != nil { if err != nil {
panic(err) log.Fatal("failed to get assignment, err:", err)
} }
for i := 0; i < len(partitions); i++ { for i := 0; i < len(partitions); i++ {
fmt.Println(partitions[i]) fmt.Println(partitions[i])
@ -87,7 +88,27 @@ func main() {
Offset: 0, Offset: 0,
}, 0) }, 0)
if err != nil { if err != nil {
panic(err) log.Fatal("failed to seek, err:", err)
}
}
fmt.Println("assignment seek to beginning successfully")
// poll data again
gotData := false
for i := 0; i < 50; i++ {
if gotData {
break
}
ev := consumer.Poll(100)
if ev != nil {
switch e := ev.(type) {
case *tmqcommon.DataMessage:
// process your data here
fmt.Printf("second data polled:%v\n", e)
gotData = true
case tmqcommon.Error:
fmt.Printf("%% Error: %v: %v\n", e.Code(), e)
log.Fatal("failed to get message, err:", e)
}
} }
} }
// ANCHOR_END: seek // ANCHOR_END: seek
@ -95,12 +116,12 @@ func main() {
// unsubscribe // unsubscribe
err = consumer.Unsubscribe() err = consumer.Unsubscribe()
if err != nil { if err != nil {
panic(err) log.Fatal("failed to unsubscribe, err:", err)
} }
// close consumer // close consumer
err = consumer.Close() err = consumer.Close()
if err != nil { if err != nil {
panic(err) log.Fatal("failed to close consumer, err:", err)
} }
// ANCHOR_END: close // ANCHOR_END: close
<-done <-done
@ -109,22 +130,22 @@ func main() {
func initEnv(conn *sql.DB) { func initEnv(conn *sql.DB) {
_, err := conn.Exec("CREATE DATABASE IF NOT EXISTS power") _, err := conn.Exec("CREATE DATABASE IF NOT EXISTS power")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to create database, err:", err)
} }
_, err = conn.Exec("CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))") _, err = conn.Exec("CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to create stable, err:", err)
} }
_, err = conn.Exec("CREATE TOPIC IF NOT EXISTS topic_meters AS SELECT ts, current, voltage, phase, groupid, location FROM power.meters") _, err = conn.Exec("CREATE TOPIC IF NOT EXISTS topic_meters AS SELECT ts, current, voltage, phase, groupid, location FROM power.meters")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to create topic, err:", err)
} }
go func() { go func() {
for i := 0; i < 10; i++ { for i := 0; i < 10; i++ {
time.Sleep(time.Second) time.Sleep(time.Second)
_, err = conn.Exec("INSERT INTO power.d1001 USING power.meters TAGS (2, 'California.SanFrancisco') VALUES (NOW , 10.2, 219, 0.32)") _, err = conn.Exec("INSERT INTO power.d1001 USING power.meters TAGS (2, 'California.SanFrancisco') VALUES (NOW , 10.2, 219, 0.32)")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to insert data, err:", err)
} }
} }
done <- struct{}{} done <- struct{}{}

55
docs/examples/go/tmq/ws/main.go
View File

@ -3,6 +3,7 @@ package main
import ( import (
"database/sql" "database/sql"
"fmt" "fmt"
"log"
"time" "time"
"github.com/taosdata/driver-go/v3/common" "github.com/taosdata/driver-go/v3/common"
@ -17,7 +18,7 @@ func main() {
// init env // init env
conn, err := sql.Open("taosWS", "root:taosdata@ws(127.0.0.1:6041)/") conn, err := sql.Open("taosWS", "root:taosdata@ws(127.0.0.1:6041)/")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to connect TDengine, err:", err)
} }
defer func() { defer func() {
conn.Close() conn.Close()
@ -36,17 +37,17 @@ func main() {
"msg.with.table.name": "true", "msg.with.table.name": "true",
"enable.auto.commit": "true", "enable.auto.commit": "true",
"auto.commit.interval.ms": "1000", "auto.commit.interval.ms": "1000",
"group.id": "group2", "group.id": "group1",
"client.id": "1", "client.id": "client1",
}) })
if err != nil { if err != nil {
panic(err) log.Fatal("failed to create consumer, err:", err)
} }
// ANCHOR_END: create_consumer // ANCHOR_END: create_consumer
// ANCHOR: subscribe // ANCHOR: subscribe
err = consumer.Subscribe("topic_meters", nil) err = consumer.Subscribe("topic_meters", nil)
if err != nil { if err != nil {
panic(err) log.Fatal("failed to subscribe, err:", err)
} }
for i := 0; i < 50; i++ { for i := 0; i < 50; i++ {
ev := consumer.Poll(100) ev := consumer.Poll(100)
@ -54,23 +55,23 @@ func main() {
switch e := ev.(type) { switch e := ev.(type) {
case *tmqcommon.DataMessage: case *tmqcommon.DataMessage:
// process your data here // process your data here
fmt.Printf("get message:%v\n", e) fmt.Printf("data:%v\n", e)
// ANCHOR: commit_offset // ANCHOR: commit_offset
// commit offset // commit offset
topicPartition, err := consumer.CommitOffsets([]tmqcommon.TopicPartition{e.TopicPartition}) topicPartition, err := consumer.CommitOffsets([]tmqcommon.TopicPartition{e.TopicPartition})
if err != nil { if err != nil {
panic(err) log.Fatal("failed to commit offset, err:", err)
} }
fmt.Println(topicPartition) fmt.Println(topicPartition)
// ANCHOR_END: commit_offset // ANCHOR_END: commit_offset
case tmqcommon.Error: case tmqcommon.Error:
fmt.Printf("%% Error: %v: %v\n", e.Code(), e) fmt.Printf("%% Error: %v: %v\n", e.Code(), e)
panic(e) log.Fatal("failed to get message, err:", e)
} }
// commit all offsets // commit all offsets
topicPartition, err := consumer.Commit() topicPartition, err := consumer.Commit()
if err != nil { if err != nil {
panic(err) log.Fatal("failed to commit, err:", err)
} }
fmt.Println(topicPartition) fmt.Println(topicPartition)
@ -81,7 +82,7 @@ func main() {
// get assignment // get assignment
partitions, err := consumer.Assignment() partitions, err := consumer.Assignment()
if err != nil { if err != nil {
panic(err) log.Fatal("failed to get assignment, err:", err)
} }
for i := 0; i < len(partitions); i++ { for i := 0; i < len(partitions); i++ {
fmt.Println(partitions[i]) fmt.Println(partitions[i])
@ -92,7 +93,27 @@ func main() {
Offset: 0, Offset: 0,
}, 0) }, 0)
if err != nil { if err != nil {
panic(err) log.Fatal("failed to seek, err:", err)
}
}
fmt.Println("assignment seek to beginning successfully")
// poll data again
gotData := false
for i := 0; i < 50; i++ {
if gotData {
break
}
ev := consumer.Poll(100)
if ev != nil {
switch e := ev.(type) {
case *tmqcommon.DataMessage:
// process your data here
fmt.Printf("second data polled:%v\n", e)
gotData = true
case tmqcommon.Error:
fmt.Printf("%% Error: %v: %v\n", e.Code(), e)
log.Fatal("failed to get message, err:", e)
}
} }
} }
// ANCHOR_END: seek // ANCHOR_END: seek
@ -100,12 +121,12 @@ func main() {
// unsubscribe // unsubscribe
err = consumer.Unsubscribe() err = consumer.Unsubscribe()
if err != nil { if err != nil {
panic(err) log.Fatal("failed to unsubscribe, err:", err)
} }
// close consumer // close consumer
err = consumer.Close() err = consumer.Close()
if err != nil { if err != nil {
panic(err) log.Fatal("failed to close consumer, err:", err)
} }
// ANCHOR_END: close // ANCHOR_END: close
<-done <-done
@ -114,22 +135,22 @@ func main() {
func initEnv(conn *sql.DB) { func initEnv(conn *sql.DB) {
_, err := conn.Exec("CREATE DATABASE IF NOT EXISTS power") _, err := conn.Exec("CREATE DATABASE IF NOT EXISTS power")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to create database, err:", err)
} }
_, err = conn.Exec("CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))") _, err = conn.Exec("CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to create stable, err:", err)
} }
_, err = conn.Exec("CREATE TOPIC IF NOT EXISTS topic_meters AS SELECT ts, current, voltage, phase, groupid, location FROM power.meters") _, err = conn.Exec("CREATE TOPIC IF NOT EXISTS topic_meters AS SELECT ts, current, voltage, phase, groupid, location FROM power.meters")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to create topic, err:", err)
} }
go func() { go func() {
for i := 0; i < 10; i++ { for i := 0; i < 10; i++ {
time.Sleep(time.Second) time.Sleep(time.Second)
_, err = conn.Exec("INSERT INTO power.d1001 USING power.meters TAGS (2, 'California.SanFrancisco') VALUES (NOW , 10.2, 219, 0.32)") _, err = conn.Exec("INSERT INTO power.d1001 USING power.meters TAGS (2, 'California.SanFrancisco') VALUES (NOW , 10.2, 219, 0.32)")
if err != nil { if err != nil {
panic(err) log.Fatal("failed to insert data, err:", err)
} }
} }
done <- struct{}{} done <- struct{}{}

7
docs/zh/08-develop/04-schemaless.md
View File

@ -225,6 +225,9 @@ writer.write(lineDemo, SchemalessProtocolType.LINE, SchemalessTimestampType.NANO
<TabItem label="Python" value="python"> <TabItem label="Python" value="python">
</TabItem> </TabItem>
<TabItem label="Go" value="go"> <TabItem label="Go" value="go">
```go
{{#include docs/examples/go/schemaless/native/main.go}}
```
</TabItem> </TabItem>
<TabItem label="Rust" value="rust"> <TabItem label="Rust" value="rust">
除 DSN 不同，其余同 Websocket 代码示例。 除 DSN 不同，其余同 Websocket 代码示例。
@ -252,9 +255,7 @@ writer.write(lineDemo, SchemalessProtocolType.LINE, SchemalessTimestampType.NANO
<TabItem label="Python" value="python"> <TabItem label="Python" value="python">
</TabItem> </TabItem>
<TabItem label="Go" value="go"> <TabItem label="Go" value="go">
```go 不支持
{{#include docs/examples/go/schemaless/native/main.go}}
```
</TabItem> </TabItem>
<TabItem label="Rust" value="rust"> <TabItem label="Rust" value="rust">
不支持 不支持

51
tests/docs-examples-test/csharp.sh
View File

@ -7,32 +7,59 @@ pgrep taosadapter || taosadapter >> /dev/null 2>&1 &
cd ../../docs/examples/csharp cd ../../docs/examples/csharp
dotnet run --project connect/connect.csproj dotnet run --project connect/connect.csproj
dotnet run --project wsConnect/wsConnect.csproj
taos -s "drop database if exists power"
dotnet run --project sqlInsert/sqlinsert.csproj
dotnet run --project query/query.csproj
#dotnet run --project subscribe/subscribe.csproj
#taos -s "drop topic if exists topic_example"
taos -s "drop database if exists power"
dotnet run --project stmtInsert/stmtinsert.csproj
taos -s "drop database if exists test" taos -s "drop database if exists test"
sleep 1
dotnet run --project influxdbLine/influxdbline.csproj dotnet run --project influxdbLine/influxdbline.csproj
taos -s "drop database if exists test" taos -s "drop database if exists test"
sleep 1
dotnet run --project optsTelnet/optstelnet.csproj dotnet run --project optsTelnet/optstelnet.csproj
taos -s "drop database if exists test" taos -s "drop database if exists test"
sleep 1
dotnet run --project optsJSON/optsJSON.csproj dotnet run --project optsJSON/optsJSON.csproj
taos -s "create database if not exists test" # query
taos -s "drop database if exists power" taos -s "drop database if exists power"
dotnet run --project wsConnect/wsConnect.csproj sleep 1
dotnet run --project wsInsert/wsInsert.csproj dotnet run --project wsInsert/wsInsert.csproj
dotnet run --project wsQuery/wsQuery.csproj dotnet run --project wsQuery/wsQuery.csproj
taos -s "drop database if exists power" taos -s "drop database if exists power"
sleep 1
dotnet run --project sqlInsert/sqlinsert.csproj
dotnet run --project query/query.csproj
# stmt
taos -s "drop database if exists power"
sleep 1
dotnet run --project wsStmt/wsStmt.csproj dotnet run --project wsStmt/wsStmt.csproj
taos -s "drop database if exists test"
taos -s "drop database if exists power" taos -s "drop database if exists power"
sleep 1
dotnet run --project stmtInsert/stmtinsert.csproj
# schemaless
taos -s "drop database if exists power"
sleep 1
dotnet run --project wssml/wssml.csproj
taos -s "drop database if exists power"
sleep 1
dotnet run --project nativesml/nativesml.csproj
# subscribe
taos -s "drop topic if exists topic_meters"
sleep 1
taos -s "drop database if exists power"
sleep 1
dotnet run --project wssubscribe/wssubscribe.csproj
taos -s "drop topic if exists topic_meters"
sleep 1
taos -s "drop database if exists power"
sleep 1
dotnet run --project subscribe/subscribe.csproj

49
tests/docs-examples-test/go.sh
View File

@ -4,7 +4,7 @@ set -e
taosd >>/dev/null 2>&1 & taosd >>/dev/null 2>&1 &
taosadapter >>/dev/null 2>&1 & taosadapter >>/dev/null 2>&1 &
sleep 10 sleep 1
cd ../../docs/examples/go cd ../../docs/examples/go
go mod tidy go mod tidy
@ -12,20 +12,67 @@ go mod tidy
go run ./connect/afconn/main.go go run ./connect/afconn/main.go
go run ./connect/cgoexample/main.go go run ./connect/cgoexample/main.go
go run ./connect/restexample/main.go go run ./connect/restexample/main.go
go run ./connect/connpool/main.go
go run ./connect/wsexample/main.go
taos -s "drop database if exists power"
go run ./sqlquery/main.go
taos -s "drop database if exists power"
sleep 1
go run ./queryreqid/main.go
taos -s "drop database if exists power"
sleep 1
go run ./stmt/native/main.go
taos -s "drop database if exists power"
sleep 1
go run ./stmt/ws/main.go
taos -s "drop database if exists power"
sleep 1
go run ./schemaless/native/main.go
taos -s "drop database if exists power"
sleep 1
go run ./schemaless/ws/main.go
taos -s "drop topic if exists topic_meters"
sleep 1
taos -s "drop database if exists power"
sleep 1
go run ./tmq/native/main.go
taos -s "drop topic if exists topic_meters"
sleep 1
taos -s "drop database if exists power"
sleep 1
go run ./tmq/ws/main.go
taos -s "drop database if exists test" taos -s "drop database if exists test"
sleep 1
go run ./insert/json/main.go go run ./insert/json/main.go
taos -s "drop database if exists test" taos -s "drop database if exists test"
sleep 1
go run ./insert/line/main.go go run ./insert/line/main.go
taos -s "drop topic if exists topic_meters"
sleep 1
taos -s "drop database if exists power" taos -s "drop database if exists power"
sleep 1
go run ./insert/sql/main.go go run ./insert/sql/main.go
taos -s "drop database if exists power" taos -s "drop database if exists power"
sleep 1
go run ./insert/stmt/main.go go run ./insert/stmt/main.go
taos -s "drop database if exists test" taos -s "drop database if exists test"
sleep 1
go run ./insert/telnet/main.go go run ./insert/telnet/main.go
go run ./query/sync/main.go go run ./query/sync/main.go
taos -s "drop topic if exists example_tmq_topic" taos -s "drop topic if exists example_tmq_topic"
sleep 1
taos -s "drop database if exists example_tmq" taos -s "drop database if exists example_tmq"
sleep 1
go run ./sub/main.go go run ./sub/main.go