github.com/erda-project/erda-infra@v1.0.9/providers/elasticsearch/examples/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  	"os"
    21  	"time"
    22  
    23  	"github.com/erda-project/erda-infra/base/servicehub"
    24  	"github.com/erda-project/erda-infra/providers/elasticsearch"
    25  	"github.com/olivere/elastic"
    26  )
    27  
    28  type provider struct {
    29  	ES     elasticsearch.Interface // autowired
    30  	Client *elastic.Client         // autowired
    31  }
    32  
    33  func (p *provider) Init(ctx servicehub.Context) error {
    34  	context, cancel := context.WithTimeout(context.Background(), 10*time.Second)
    35  	defer cancel()
    36  	resp, err := p.Client.CatIndices().Do(context)
    37  	if err != nil {
    38  		return err
    39  	}
    40  	for _, item := range resp {
    41  		fmt.Println(item.Index)
    42  	}
    43  	return nil
    44  }
    45  
    46  func init() {
    47  	servicehub.Register("example", &servicehub.Spec{
    48  		Services:     []string{"example"},
    49  		Dependencies: []string{"elasticsearch"},
    50  		Description:  "example",
    51  		Creator: func() servicehub.Provider {
    52  			return &provider{}
    53  		},
    54  	})
    55  }
    56  
    57  func main() {
    58  	hub := servicehub.New()
    59  	hub.Run("examples", "", os.Args...)
    60  }
    61  
    62  // OUTPUT:
    63  // NFO[2021-03-18 16:14:17.725] provider elasticsearch initialized
    64  // spot-elasticsearch_http-full_cluster-1615939200000
    65  // spot-elasticsearch_transport-full_cluster-1615766400000
    66  // INFO[2021-03-18 16:14:19.802] provider example (depends [elasticsearch]) initialized
    67  // INFO[2021-03-18 16:14:19.802] signals to quit:[hangup interrupt terminated quit]