66 lines
1.6 KiB
Go
66 lines
1.6 KiB
Go
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package outputs_influxdb
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import (
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"fmt"
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"github.com/influxdata/toml"
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"github.com/influxdata/toml/ast"
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"github.com/influxdata/telegraf/internal/choice"
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"github.com/influxdata/telegraf/migrations"
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)
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// Migration function
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func migrate(tbl *ast.Table) ([]byte, string, error) {
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// Decode the old data structure
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var plugin map[string]interface{}
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if err := toml.UnmarshalTable(tbl, &plugin); err != nil {
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return nil, "", err
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}
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// Check for deprecated option(s) and migrate them
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var applied bool
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if oldURL, found := plugin["url"]; found {
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applied = true
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var urls []string
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// Merge the old URL and the new URLs with deduplication
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if newURLs, found := plugin["urls"]; found {
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var err error
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urls, err = migrations.AsStringSlice(newURLs)
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if err != nil {
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return nil, "", fmt.Errorf("'urls' setting: %w", err)
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}
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}
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ou, ok := oldURL.(string)
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if !ok {
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return nil, "", fmt.Errorf("unexpected 'url' entry %v (%T)", ou, ou)
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}
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if !choice.Contains(ou, urls) {
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urls = append(urls, ou)
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}
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// Update replacement and remove the deprecated setting
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plugin["urls"] = urls
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delete(plugin, "url")
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}
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// No options migrated so we can exit early
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if !applied {
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return nil, "", migrations.ErrNotApplicable
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}
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// Create the corresponding plugin configurations
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cfg := migrations.CreateTOMLStruct("outputs", "influxdb")
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cfg.Add("outputs", "influxdb", plugin)
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output, err := toml.Marshal(cfg)
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return output, "", err
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}
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// Register the migration function for the plugin type
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func init() {
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migrations.AddPluginOptionMigration("outputs.influxdb", migrate)
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}
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