| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| package util |
| |
| import ( |
| "fmt" |
| "io" |
| |
| flatbuffers "github.com/google/flatbuffers/go" |
| |
| "github.com/apache/apisix-go-plugin-runner/pkg/log" |
| ) |
| |
| const ( |
| HeaderLen = 4 |
| MaxDataSize = 2<<24 - 1 |
| ) |
| |
| const ( |
| RPCError = iota |
| RPCPrepareConf |
| RPCHTTPReqCall |
| RPCExtraInfo |
| RPCTest = 127 // used only in test |
| ) |
| |
| type RPCResult struct { |
| Err error |
| Builder *flatbuffers.Builder |
| } |
| |
| // Use struct if the result is not only []byte |
| type ExtraInfoResult []byte |
| |
| func ReadErr(n int, err error, required int) bool { |
| if 0 < n && n < required { |
| err = fmt.Errorf("truncated, only get the first %d bytes", n) |
| } |
| if err != nil { |
| if err != io.EOF { |
| log.Errorf("read: %s", err) |
| } |
| return true |
| } |
| return false |
| } |
| |
| func WriteErr(n int, err error) { |
| if err != nil { |
| // TODO: solve "write: broken pipe" with context |
| log.Errorf("write: %s", err) |
| } |
| } |