Using the FunctionGraph context interface to retrieve C# function information

When FunctionGraph runs your function, it passes a context object to the handler. This object provides context attributes that provide information about the invocation, function, and execution environment.

Context interface

The interface methods of IFunctionContext interface are:

Table 1 Context interface methods

Attribute	Description
string RequestId	Get the request ID.
string ProjectId	Get the project id
string PackageName	Get name of package.
string FunctionName	Get the function name.
string FunctionVersion	Get the version of the function.
int MemoryLimitInMb	Allocated memory.
int CPUNumber	Get the CPU resources used by the function.
string AccessKey	Get the AccessKey (valid for 24 hours) with an agency. To use this method, you need to configure agency for the function. Note FunctionGraph has stopped maintaining the AccessKey API in the Runtime SDK. You cannot use this API to obtain a temporary AK.
string SecretKey	Get the SecretKey (valid for 24 hours) with an agency. To use this method, you need to configure the agency for the function. Note FunctionGraph has stopped maintaining the SecretKey API in the Runtime SDK. You cannot use this API to obtain a temporary SK.
string Token	Get the token (valid for 24 hours) with an agency. To use this method, you need to configure the agency for the function.
string SecurityAccessKey	Get the SecurityAccessKey (valid for 24 hours) with an agency. To use this method, you need to configure a agency for the function.
string SecuritySecretKey	Get the SecuritySecretKey (valid for 24 hours) with an agency. To use this method, you need to configure the agency for the function.
string SecurityToken	Get the SecuritySecretToken (valid for 24 hours) with an agency. To use this method, you need to configure the agency for the function.
string GetUserData(string key, string defaultValue=””)	Uses keys to obtain the values passed by environment variables.
int RemainingTimeInMilliSeconds	Get the remaining running time of a function.
IFunctionLogger Logger	Get the logger method provided by the context (by default, it will output information such as time and request ID).
WorkflowID
WorkflowRunID
WorkflowStateID

Warning

Results returned by using the Token, AccessKey, and SecretKey or SecurityToken, SecurityAccessKey, and SecuritySecretKey methods contain sensitive information. Exercise caution when using these methods.

Logging API

FunctionGraph provides a IFunctionLogger interface through the context object.

The logger can be accessed by using the Logger property of the context object.

Following methods are provided by the logging interface:

• Log(string message).

  The following example shows how to use the logging interface:

  Example

    var logger = context.Logger
    logger.Log("Hello world")
  

  The preceding code outputs the following log:

  Hello world

• Logf(string format, params object[] args).

  The following example shows how to use the logging interface:

  Example

    var logger = context.Logger
    var version = "v1.0.2"
    logger.Logf("Hello world {0}", version)
  

  The preceding code outputs the following log:

  Hello world v1.0.2

last updated: 2026-01-07 09:53:05 UTC - commit: b52ca97e4a0ec4c999820539460bd4ab093efa89