| /* |
| * 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 commands |
| |
| import ( |
| "errors" |
| "fmt" |
| "github.com/apache/brooklyn-client/api/entity_effectors" |
| "github.com/apache/brooklyn-client/command_metadata" |
| "github.com/apache/brooklyn-client/error_handler" |
| "github.com/apache/brooklyn-client/net" |
| "github.com/apache/brooklyn-client/scope" |
| "github.com/urfave/cli" |
| "io/ioutil" |
| "strings" |
| ) |
| |
| type Invoke struct { |
| network *net.Network |
| } |
| |
| type Stop struct { |
| Invoke |
| } |
| |
| type Start struct { |
| Invoke |
| } |
| |
| type Restart struct { |
| Invoke |
| } |
| |
| func NewInvoke(network *net.Network) (cmd *Invoke) { |
| cmd = new(Invoke) |
| cmd.network = network |
| return |
| } |
| |
| func NewInvokeStop(network *net.Network) (cmd *Stop) { |
| cmd = new(Stop) |
| cmd.network = network |
| return |
| } |
| |
| func NewInvokeStart(network *net.Network) (cmd *Start) { |
| cmd = new(Start) |
| cmd.network = network |
| return |
| } |
| |
| func NewInvokeRestart(network *net.Network) (cmd *Restart) { |
| cmd = new(Restart) |
| cmd.network = network |
| return |
| } |
| |
| var paramFlags = []cli.Flag{ |
| cli.StringSliceFlag{ |
| Name: "param, P", |
| Usage: "Parameter and value separated by '=', e.g. -P x=y. If the parameter value is complex or multi-" + |
| "lined it may be provided in a file and referenced as: '@<file>', e.g. -P x=@/path/to/file.", |
| }, |
| } |
| |
| func (cmd *Invoke) Metadata() command_metadata.CommandMetadata { |
| return command_metadata.CommandMetadata{ |
| Name: "invoke", |
| Description: "Invoke an effector of an application and entity", |
| Usage: "BROOKLYN_NAME EFF-SCOPE invoke [ parameter-options ]", |
| Flags: paramFlags, |
| } |
| } |
| |
| func (cmd *Stop) Metadata() command_metadata.CommandMetadata { |
| return command_metadata.CommandMetadata{ |
| Name: "stop", |
| Description: "Invoke stop effector on an application and entity", |
| Usage: "BROOKLYN_NAME ENT-SCOPE stop [ parameter-options ]", |
| Flags: paramFlags, |
| } |
| } |
| |
| func (cmd *Start) Metadata() command_metadata.CommandMetadata { |
| return command_metadata.CommandMetadata{ |
| Name: "start", |
| Description: "Invoke start effector on an application and entity", |
| Usage: "BROOKLYN_NAME ENT-SCOPE start [ parameter-options ]", |
| Flags: paramFlags, |
| } |
| } |
| |
| func (cmd *Restart) Metadata() command_metadata.CommandMetadata { |
| return command_metadata.CommandMetadata{ |
| Name: "restart", |
| Description: "Invoke restart effector on an application and entity", |
| Usage: "BROOKLYN_NAME ENT-SCOPE restart [ parameter-options ]", |
| Flags: paramFlags, |
| } |
| } |
| |
| func (cmd *Invoke) Run(scope scope.Scope, c *cli.Context) { |
| if err := net.VerifyLoginURL(cmd.network); err != nil { |
| error_handler.ErrorExit(err) |
| } |
| parms := c.StringSlice("param") |
| invoke(cmd.network, scope.Application, scope.Entity, scope.Effector, parms) |
| } |
| |
| const stopEffector = "stop" |
| |
| func (cmd *Stop) Run(scope scope.Scope, c *cli.Context) { |
| if err := net.VerifyLoginURL(cmd.network); err != nil { |
| error_handler.ErrorExit(err) |
| } |
| parms := c.StringSlice("param") |
| invoke(cmd.network, scope.Application, scope.Entity, stopEffector, parms) |
| } |
| |
| const startEffector = "start" |
| |
| func (cmd *Start) Run(scope scope.Scope, c *cli.Context) { |
| if err := net.VerifyLoginURL(cmd.network); err != nil { |
| error_handler.ErrorExit(err) |
| } |
| parms := c.StringSlice("param") |
| invoke(cmd.network, scope.Application, scope.Entity, startEffector, parms) |
| } |
| |
| const restartEffector = "restart" |
| |
| func (cmd *Restart) Run(scope scope.Scope, c *cli.Context) { |
| if err := net.VerifyLoginURL(cmd.network); err != nil { |
| error_handler.ErrorExit(err) |
| } |
| parms := c.StringSlice("param") |
| invoke(cmd.network, scope.Application, scope.Entity, restartEffector, parms) |
| } |
| |
| func invoke(network *net.Network, application, entity, effector string, parms []string) { |
| names, vals, err := extractParams(parms) |
| result, err := entity_effectors.TriggerEffector(network, application, entity, effector, names, vals) |
| if nil != err { |
| error_handler.ErrorExit(err) |
| } else { |
| if "" != result { |
| fmt.Println(result) |
| } |
| } |
| } |
| |
| func extractParams(parms []string) ([]string, []string, error) { |
| names := make([]string, len(parms)) |
| vals := make([]string, len(parms)) |
| var err error |
| for i, parm := range parms { |
| index := strings.Index(parm, "=") |
| if index < 0 { |
| return names, vals, errors.New("Parameter value not provided: " + parm) |
| } |
| names[i] = parm[0:index] |
| vals[i], err = extractParamValue(parm[index+1:]) |
| } |
| return names, vals, err |
| } |
| |
| const paramDataPrefix string = "@" |
| |
| func extractParamValue(rawParam string) (string, error) { |
| var err error |
| var val string |
| if strings.HasPrefix(rawParam, paramDataPrefix) { |
| // strip the data prefix from the filename before reading |
| val, err = readParamFromFile(rawParam[len(paramDataPrefix):]) |
| } else { |
| val = rawParam |
| err = nil |
| } |
| return val, err |
| } |
| |
| // returning a string rather than byte array, assuming non-binary |
| // TODO - if necessary support binary data sending to effector |
| func readParamFromFile(filename string) (string, error) { |
| dat, err := ioutil.ReadFile(filename) |
| return string(dat), err |
| } |