Product Features

Function Management

FunctionGraph provides console-based function management.

• The Node.js, Java, Python, Go, and custom runtimes are supported. Table 1 provides the details.
  

  You are advised to use the latest runtime version.

  Table 1 Runtimes

  Runtime	Supported Version
  Node.js	6.10, 8.10, 10.16, 12.13, 14.18, 16.17
  Python	2.7, 3.6, 3.9, 3.10
  Java	8.0 and 11
  Go	1.x
  C#	.NET Core 2.1 and .NET Core 3.1
  PHP	7.3
  Custom	-

• Multiple code entry modes

  FunctionGraph allows you to edit code inline, upload a ZIP file from Object Storage Service (OBS), or directly upload a ZIP or JAR file. Table 2 lists the code entry modes supported for each runtime.

  Table 2 Code entry modes

  Runtime	Editing Code Inline	Uploading a ZIP File	Uploading a JAR File	Uploading a ZIP File from OBS
  Node.js	Supported	Supported	Not supported	Supported
  Python	Supported	Supported	Not supported	Supported
  Java	Not supported	Supported	Supported	Supported
  Go	Not supported	Supported	Not supported	Supported
  C#	Not supported	Supported	Not supported	Supported
  PHP	Supported	Supported	Not supported	Supported
  Custom	Supported	Supported	Not supported	Supported

Trigger

Table 3 lists the invocation modes for different trigger types.

Logs and Metrics

FunctionGraph graphically displays function monitoring metrics and collects function running logs, enabling you to view function statuses, and locate problems by querying logs.

To query logs, see Managing Function Logs.

For details about monitoring metric, see Function Monitoring.

For details about tenant-level function monitoring metrics, see Introduction to Dashboard.

Function Initialization

The initializer interface is introduced to:

• Isolate function initialization and request processing to enable clearer program logic and better structured and higher-performance code.
• Ensure smooth function upgrade to prevent performance loss during the application layer's cold start initialization. Enable new function instances to automatically execute initialization logic before processing requests.
• Identify the overhead of application layer initialization, and accurately determine the time for resource scaling and the quantity of required resources. This feature makes request latency more stable when the application load increases and more function instances are required.

HTTP Functions

You can set Function Type to HTTP Function on the function creation page. HTTP functions are designed to optimize web services. You can send HTTP requests to URLs to trigger function execution. HTTP functions support APIG and API Connect (APIC) triggers only.

Custom Images

You can directly package and upload container images. The images are loaded and started by the platform and can be called in a similar way as HTTP functions. Unlike the previous code upload mode, you can use a custom code package, which is flexible and reduces migration costs.