github.com/erda-project/erda-infra@v1.0.10-0.20240327085753-f3a249292aeb/examples/example/helloworld/provider.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 example
    16  
    17  import (
    18  	"context"
    19  	"fmt"
    20  	"time"
    21  
    22  	"github.com/erda-project/erda-infra/base/logs"
    23  	"github.com/erda-project/erda-infra/base/servicehub"
    24  )
    25  
    26  // Interface .
    27  type Interface interface {
    28  	Hello(name string) string
    29  }
    30  
    31  type config struct {
    32  	// some fields of config for this provider
    33  	Message string `file:"message" flag:"msg" default:"hi" desc:"message to print"`
    34  }
    35  
    36  // +provider
    37  type provider struct {
    38  	Cfg *config
    39  	Log logs.Logger
    40  }
    41  
    42  // Init this is optional
    43  func (p *provider) Init(ctx servicehub.Context) error {
    44  	p.Log.Info("message: ", p.Cfg.Message)
    45  	return nil
    46  }
    47  
    48  // Run this is optional
    49  func (p *provider) Run(ctx context.Context) error {
    50  	tick := time.NewTicker(3 * time.Second)
    51  	defer tick.Stop()
    52  	for {
    53  		select {
    54  		case <-tick.C:
    55  			p.Log.Info("do something...")
    56  		case <-ctx.Done():
    57  			return nil
    58  		}
    59  	}
    60  }
    61  
    62  // Hello .
    63  func (p *provider) Hello(name string) string {
    64  	return fmt.Sprintf("hello %s", p.Cfg.Message)
    65  }
    66  
    67  func init() {
    68  	servicehub.Register("helloworld", &servicehub.Spec{
    69  		Services:    []string{"helloworld-service"},
    70  		Description: "here is description of helloworld",
    71  		ConfigFunc:  func() interface{} { return &config{} },
    72  		Creator: func() servicehub.Provider {
    73  			return &provider{}
    74  		},
    75  	})
    76  }