CommandableAzureFunctionClient

Inherits: IConfigurable, IReferenceable

Description

Commandable services are generated automatically for ICommandable objects. Each command is exposed as action determined by “cmd” parameter.

Configuration parameters

• connections:
  • uri: (optional) full connection string or use protocol, app_name and function_name to build
  • protocol: (optional) connection protocol
  • app_name: (optional) Azure Function application name
  • function_name: (optional) Azure Function name
• options:
  • retries: number of retries (default: 3)
  • connect_timeout: connection timeout in milliseconds (default: 10 sec)
  • timeout: invocation timeout in milliseconds (default: 10 sec)
• credentials:
  • auth_code: Azure Function auth code if use custom authorization provide empty string

References

• *:logger:*:*:1.0 - (optional) ILogger components to pass log messages.
• *:counters:*:*:1.0 - (optional) ICounters components to pass collected measurements.
• *:discovery:*:*:1.0 - (optional) IDiscovery services to resolve connections.
• *:credential-store:*:*:1.0 - (optional) Credential stores to resolve credentials.

Constructors

Creates a new instance of this client.

public CommandableAzureFunctionClient(string name)

• values: string - a service name.

Instance methods

CallCommandAsync

Calls a remote action in Azure Function. The name of the action is added as “cmd” parameter to the action parameters.

public Task<T> CallCommandAsync<T>(string cmd, string correlationId, object args)

• cmd: string - an action name
• correlationId: string - (optional) transaction id to trace execution through call chain.
• params: object - command parameters.
• returns: Task<T> - action result.

Examples

class MyCommandableAzureClient : CommandableAzureFunctionClient, IMyClient
{
    /// ...
    public async Task<MyData> GetDataAsync(string correlationId, string id) {
        return await this.CallCommand<MyData>("get_data", correlationId, new { id=id });
    }
    /// ...

    public async Task Main()
    {
        var client = new MyCommandableAzureClient();
        client.Configure(ConfigParams.FromTuples(
            "connection.uri", "http://<APP_NAME>.azurewebsites.net/api/<FUNCTION_NAME>",
            "connection.protocol", protocol,
            "connection.app_name", appName,
            "connection.function_name", functionName,
            "credential.auth_code", authCode
        ));

        var  result = await client.GetDataAsync("123", "1");
    }
}

See also

• AzureFunction