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Refactor idxmgmt supporter and export commands. (#11777)
Remove methods from idxmgmt supporter interface for more flexibility. Adapt idxmgmt supporter to work with more generic client, allowing for reuse in export commands. Refactor export commands and allow printing to file for exporting ilm policies and templates. Improve beats creation and initialization process.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| // Licensed to Elasticsearch B.V. under one or more contributor | ||
| // license agreements. See the NOTICE file distributed with | ||
| // this work for additional information regarding copyright | ||
| // ownership. Elasticsearch B.V. licenses this file to you 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. | ||
|
|
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| package export | ||
|
|
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| import ( | ||
| "fmt" | ||
| "os" | ||
| "path/filepath" | ||
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| "github.com/elastic/beats/libbeat/common" | ||
| "github.com/elastic/beats/libbeat/idxmgmt" | ||
| "github.com/elastic/beats/libbeat/version" | ||
| ) | ||
|
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| type stdoutClient struct { | ||
| ver common.Version | ||
| f *os.File | ||
| } | ||
|
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| type fileClient struct { | ||
| ver common.Version | ||
| dir string | ||
| } | ||
|
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| func newIdxmgmtClient(dir string, ver string) idxmgmt.FileClient { | ||
| if dir == "" { | ||
| c, err := newStdoutClient(ver) | ||
| if err != nil { | ||
| fatalf("Error creating stdout writer: %+v.", err) | ||
| } | ||
| return c | ||
| } | ||
| c, err := newFileClient(dir, ver) | ||
| if err != nil { | ||
| fatalf("Error creating directory: %+v.", err) | ||
| } | ||
| return c | ||
| } | ||
|
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| func newStdoutClient(ver string) (*stdoutClient, error) { | ||
| if ver == "" { | ||
| ver = version.GetDefaultVersion() | ||
| } | ||
| v, err := common.NewVersion(ver) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return &stdoutClient{ver: *v, f: os.Stdout}, nil | ||
| } | ||
|
|
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| func newFileClient(dir string, ver string) (*fileClient, error) { | ||
| if ver == "" { | ||
| ver = version.GetDefaultVersion() | ||
| } | ||
| path, err := filepath.Abs(dir) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| err = os.MkdirAll(path, os.ModePerm) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return &fileClient{ver: *common.MustNewVersion(ver), dir: path}, nil | ||
| } | ||
|
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| func (c *stdoutClient) GetVersion() common.Version { | ||
| return c.ver | ||
| } | ||
|
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| func (c *stdoutClient) Write(_ string, body string) error { | ||
| _, err := c.f.WriteString(body) | ||
| return err | ||
| } | ||
|
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| func (c *fileClient) GetVersion() common.Version { | ||
| return c.ver | ||
| } | ||
|
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| func (c *fileClient) Write(name string, body string) error { | ||
| f, err := os.Create(filepath.Join(c.dir, fmt.Sprintf("%s.json", name))) | ||
| defer f.Close() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| _, err = f.WriteString(body) | ||
| return err | ||
| } | ||
|
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| func fatalf(msg string, vs ...interface{}) { | ||
| fmt.Fprintf(os.Stderr, msg, vs...) | ||
| fmt.Fprintln(os.Stderr) | ||
| os.Exit(1) | ||
| } | ||
|
|
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| func fatalfInitCmd(err error) { | ||
| fatalf("Failed to initialize 'export' command: %+v.", err) | ||
| } |
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