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init.go
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init.go
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// Copyright (c) 2021 Terminus, Inc.
//
// Licensed 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 initializer
import (
"context"
"encoding/json"
"fmt"
"io/ioutil"
"strings"
"github.com/olivere/elastic"
cfgpkg "github.com/recallsong/go-utils/config"
)
func (p *provider) initTemplates(ctx context.Context, client *elastic.Client, templates []template) error {
// check templates
contents := make([]string, len(templates), len(templates))
names := make(map[string]bool)
for i, t := range templates {
if len(t.Name) <= 0 {
return fmt.Errorf("template(%d).Name is unspecified", i)
}
if names[t.Name] {
return fmt.Errorf("template(%d).Name = %q is conflicting", i, t.Name)
}
names[t.Name] = true
if len(t.Path) <= 0 {
return fmt.Errorf("template(%d).Path is unspecified", i)
}
template, err := ioutil.ReadFile(t.Path)
if err != nil {
return fmt.Errorf("failed to load template{%d, %q, %q}: %s", i, t.Name, t.Path, err)
}
template = cfgpkg.EscapeEnv(template)
var m map[string]interface{}
err = json.Unmarshal(template, &m)
if err != nil {
return fmt.Errorf("templates{%d, %q, %q} is not json format", i, t.Name, t.Path)
}
contents[i] = string(template)
}
select {
case <-ctx.Done():
return nil
default:
}
// do request
for i, t := range templates {
resp, err := client.IndexPutTemplate(t.Name).
BodyString(contents[i]).Do(ctx)
if err != nil {
return fmt.Errorf("failed to setup index template{%d, %q}: %s", i, t.Name, err)
}
if !resp.Acknowledged {
return fmt.Errorf("failed to setup index template{%d, %q}: Acknowledged=false", i, t.Name)
}
p.Log.Infof("setup index template{%d, %q} success", i, t.Name)
}
return nil
}
func (p *provider) createIndices(ctx context.Context, client *elastic.Client, indices []createIndex) error {
for _, index := range indices {
if len(index.Index) <= 0 {
continue
}
resp, err := p.es.Client().CatIndices().Index(index.Index).Columns("index").Do(ctx)
if err != nil {
return fmt.Errorf("failed to check index %q for creating", index.Index)
}
if len(resp) > 0 {
continue
}
cresp, err := client.CreateIndex(index.Index).Do(ctx)
if err != nil {
if err, ok := err.(*elastic.Error); ok {
if err.Status == 400 && err.Details != nil && strings.Contains(err.Details.Reason, "already exists") {
return nil
}
}
return fmt.Errorf("failed to create index %q: %s", index.Index, err)
}
if !cresp.Acknowledged {
return fmt.Errorf("failed to create index %q: Acknowledged=false", index.Index)
}
}
return nil
}