github.com/erda-project/erda-infra@v1.0.9/base/servicehub/examples/dependency-multi/main.go (about)

     1  // Copyright (c) 2021 Terminus, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package main
    16  
    17  import (
    18  	"fmt"
    19  	"os"
    20  
    21  	"github.com/erda-project/erda-infra/base/logs"
    22  	"github.com/erda-project/erda-infra/base/servicehub"
    23  	"github.com/erda-project/erda-infra/base/servicehub/examples/dependency/dependency"
    24  )
    25  
    26  type config struct {
    27  	Name string `file:"name" default:"recallsong"`
    28  }
    29  
    30  type provider struct {
    31  	Cfg *config
    32  	Log logs.Logger
    33  }
    34  
    35  func (p *provider) Init(ctx servicehub.Context) error {
    36  	dep1 := ctx.Service("example-dependency@label").(dependency.Interface)
    37  	fmt.Println(dep1.Hello(p.Cfg.Name))
    38  
    39  	dep2 := ctx.Service("example-dependency").(dependency.Interface)
    40  	fmt.Println(dep2.Hello(p.Cfg.Name))
    41  	return nil
    42  }
    43  
    44  func init() {
    45  	servicehub.Register("hello-provider", &servicehub.Spec{
    46  		Services:     []string{"hello"},
    47  		Dependencies: []string{"example-dependency@label", "example-dependency"},
    48  		Description:  "hello for example",
    49  		ConfigFunc:   func() interface{} { return &config{} },
    50  		Creator: func() servicehub.Provider {
    51  			return &provider{}
    52  		},
    53  	})
    54  }
    55  
    56  func main() {
    57  	hub := servicehub.New()
    58  	hub.Run("examples", "", os.Args...)
    59  }
    60  
    61  // OUTPUT:
    62  // INFO[2021-08-25 14:36:45.422] provider example-dependency-provider initialized
    63  // INFO[2021-08-25 14:36:45.422] provider example-dependency-provider@label initialized
    64  // label-hello recallsong
    65  // hello recallsong
    66  // INFO[2021-08-25 14:36:45.422] provider hello-provider (depends services: [example-dependency@label example-dependency]) initialized
    67  // INFO[2021-08-25 14:36:45.423] signals to quit: [hangup interrupt terminated quit]