| // Licensed to 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. Apache Software Foundation (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 interceptor |
| |
| import ( |
| "crypto/sha256" |
| "fmt" |
| |
| "github.com/urfave/cli/v2" |
| ) |
| |
| const ( |
| processIDFlagName = "process-id" |
| processNameFlagName = "process-name" |
| destProcessNameFlagName = "dest-process-name" |
| ) |
| |
| // ParseProcess parses the process id or process name, |
| // and converts the present one to the missing one. |
| // See flags.InstanceFlags. |
| func ParseProcess(required bool) func(*cli.Context) error { |
| return func(ctx *cli.Context) error { |
| if err := ParseService(required)(ctx); err != nil { |
| return err |
| } |
| if err := ParseInstance(required)(ctx); err != nil { |
| return err |
| } |
| return parseProcess(required, processIDFlagName, processNameFlagName, instanceIDFlagName)(ctx) |
| } |
| } |
| |
| // ParseProcessRelation parses the source and destination service instance id or service instance name, |
| // and converts the present one to the missing one respectively. |
| // See flags.InstanceRelationFlags. |
| func ParseProcessRelation(required bool) func(*cli.Context) error { |
| return func(ctx *cli.Context) error { |
| if err := ParseService(required)(ctx); err != nil { |
| return err |
| } |
| if err := ParseInstance(required)(ctx); err != nil { |
| return err |
| } |
| if err := ParseProcess(required)(ctx); err != nil { |
| return err |
| } |
| if ctx.String(destProcessNameFlagName) == "" && required { |
| return fmt.Errorf(`flag "--%s" must given`, destProcessNameFlagName) |
| } |
| return nil |
| } |
| } |
| |
| func parseProcess(required bool, idFlagName, nameFlagName, instanceIDFlagName string) func(*cli.Context) error { |
| return func(ctx *cli.Context) error { |
| id := ctx.String(idFlagName) |
| name := ctx.String(nameFlagName) |
| instanceID := ctx.String(instanceIDFlagName) |
| |
| if id == "" && name == "" { |
| if required { |
| return fmt.Errorf(`either flags "--%s" or "--%s" must be given`, idFlagName, nameFlagName) |
| } |
| return nil |
| } |
| |
| if name != "" { |
| if instanceID == "" { |
| return fmt.Errorf(`"--%s" is specified but its related service name or id is not given`, nameFlagName) |
| } |
| id = fmt.Sprintf("%x", sha256.New().Sum([]byte(fmt.Sprintf("%s_%s", instanceID, name)))) |
| } |
| |
| return ctx.Set(idFlagName, id) |
| } |
| } |