edgefunction

Documentation

Overview

Copyright 2020 Limelight Networks, Inc.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Copyright 2020 Limelight Networks, Inc.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Copyright 2020 Limelight Networks, Inc.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Index

• func Start(handler interface{})
• type EdgeFunctionContext
  • func FromContext(ctx context.Context) (*EdgeFunctionContext, error)
• type Handler
  • func NewHandler(handlerFunc interface{}) Handler

Functions

func Start

func Start(handler interface{})

Start passes the handler all EdgeFunction requests for processing.

Types

type EdgeFunctionContext

type EdgeFunctionContext struct {
	RequestID       string
	CollectStdio    bool
	FunctionName    string
	FunctionVersion string
	Qualifier       string
	MemoryLimitMB   int32
}

EdgeFunctionContext is an easy to use extraction of a context passed into the EdgeFunction.

func FromContext

func FromContext(ctx context.Context) (*EdgeFunctionContext, error)

FromContext parses out key fields from the passed in ctx and creates an easy to use EdgeFunctionContext. Returns an error if the conversion failed due to a missing value.

type Handler

type Handler interface {
	Invoke(ctx context.Context, payload []byte) ([]byte, error)
}

func NewHandler

func NewHandler(handlerFunc interface{}) Handler

NewHandler creates a base EdgeFunction handler from the given handler function. The returned Handler performs JSON deserialization and serialization, and delegates to the input handler function. The handler function parameter must satisfy the rules documented by Start. If handlerFunc is not a valid handler, the returned Handler simply reports the validation error.