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https://github.com/grafana/grafana.git
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a31672fa40
* Rename RecordStatesAsync to Record * Rename QueryStates to Query * Implement fanout writes * Implement primary queries * Simplify error joining * Add test for query path * Add tests for writes and error propagation * Allow fanout backend to be configured * Touch up log messages and config validation * Consistent documentation for all backend structs * Parse and normalize backend names more consistently against an enum * Touch-ups to documentation * Improve clarity around multi-record blocking * Keep primary and secondaries more distinct * Rename fanout backend to multiple backend * Simplify config keys for multi backend mode
40 lines
932 B
Go
40 lines
932 B
Go
package historian
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import (
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"fmt"
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"strings"
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)
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// BackendType identifies different kinds of state history backends.
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type BackendType string
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// String implements Stringer for BackendType.
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func (bt BackendType) String() string {
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return string(bt)
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}
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const (
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BackendTypeAnnotations BackendType = "annotations"
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BackendTypeLoki BackendType = "loki"
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BackendTypeMultiple BackendType = "multiple"
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BackendTypeNoop BackendType = "noop"
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BackendTypeSQL BackendType = "sql"
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)
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func ParseBackendType(s string) (BackendType, error) {
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norm := strings.ToLower(strings.TrimSpace(s))
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types := map[BackendType]struct{}{
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BackendTypeAnnotations: {},
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BackendTypeLoki: {},
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BackendTypeMultiple: {},
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BackendTypeNoop: {},
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BackendTypeSQL: {},
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}
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p := BackendType(norm)
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if _, ok := types[p]; !ok {
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return "", fmt.Errorf("unrecognized state history backend: %s", p)
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}
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return p, nil
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}
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