github.com/erda-project/erda-infra@v1.0.9/base/servicehub/examples/error-on-start/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  	"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  type config struct {
    27  	Error bool `file:"error"`
    28  }
    29  
    30  type provider struct {
    31  	Cfg *config
    32  	Log logs.Logger
    33  }
    34  
    35  func (p *provider) Run(ctx context.Context) error {
    36  	if p.Cfg.Error {
    37  		time.Sleep(3 * time.Second)
    38  		return fmt.Errorf("run error")
    39  	}
    40  	p.Log.Info("run with no error")
    41  	for {
    42  		select {
    43  		case <-ctx.Done():
    44  			return nil
    45  		}
    46  	}
    47  }
    48  
    49  func init() {
    50  	servicehub.Register("hello-provider", &servicehub.Spec{
    51  		Services:    []string{"hello"},
    52  		Description: "hello for example",
    53  		ConfigFunc:  func() interface{} { return &config{} },
    54  		Creator: func() servicehub.Provider {
    55  			return &provider{}
    56  		},
    57  	})
    58  }
    59  
    60  func main() {
    61  	servicehub.Run(&servicehub.RunOptions{
    62  		Content: `
    63  hello-provider:
    64      error: false
    65  hello-provider@error1:
    66      error: true
    67  hello-provider@error2:
    68      error: true
    69  `,
    70  	})
    71  }