forked from TrueCloudLab/frostfs-sdk-go
9dcff95a29
Define base `Status` interface. Provide the functionality to distinguish success and failure returns. Provide functionality to transport statuses over NeoFS API V2 protocol. Support success `OK` and failure `INTERNAL` returns. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
99 lines
2.7 KiB
Go
99 lines
2.7 KiB
Go
package apistatus
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import (
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"fmt"
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"github.com/nspcc-dev/neofs-api-go/v2/status"
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)
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// StatusV2 defines a variety of Status instances compatible with NeoFS API V2 protocol.
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//
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// Note: it is not recommended to use this type directly, it is intended for documentation of the library functionality.
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type StatusV2 interface {
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Status
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// ToStatusV2 returns the status as github.com/nspcc-dev/neofs-api-go/v2/status.Status message structure.
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ToStatusV2() *status.Status
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}
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// FromStatusV2 converts status.Status message structure to Status instance. Inverse to ToStatusV2 operation.
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//
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// If result is not nil, it implements StatusV2. This fact should be taken into account only when passing
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// the result to the inverse function ToStatusV2, casts are not compatibility-safe.
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//
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// Below is the mapping of return codes to Status instance types (with a description of parsing details).
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// Note: notice if the return type is a pointer.
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//
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// Successes:
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// * status.OK: *SuccessDefaultV2 (this also includes nil argument).
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//
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// Common failures:
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// * status.Internal: *ServerInternal.
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func FromStatusV2(st *status.Status) Status {
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var decoder interface {
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fromStatusV2(*status.Status)
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}
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switch code := st.Code(); {
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case status.IsSuccess(code):
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switch status.LocalizeSuccess(&code); code {
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case status.OK:
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decoder = new(SuccessDefaultV2)
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}
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case status.IsCommonFail(code):
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switch status.LocalizeCommonFail(&code); code {
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case status.Internal:
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decoder = new(ServerInternal)
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}
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}
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if decoder == nil {
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decoder = new(unrecognizedStatusV2)
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}
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decoder.fromStatusV2(st)
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return decoder
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}
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// ToStatusV2 converts Status instance to status.Status message structure. Inverse to FromStatusV2 operation.
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//
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// If argument is the StatusV2 instance, it is converted directly.
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// Otherwise, successes are converted with status.OK code w/o details and message, failures - with status.Internal.
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func ToStatusV2(st Status) *status.Status {
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if v, ok := st.(StatusV2); ok {
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return v.ToStatusV2()
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}
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if IsSuccessful(st) {
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return newStatusV2WithLocalCode(status.OK, status.GlobalizeSuccess)
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}
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return newStatusV2WithLocalCode(status.Internal, status.GlobalizeCommonFail)
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}
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func errMessageStatusV2(code interface{}, msg string) string {
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const (
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noMsgFmt = "status: code = %v"
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msgFmt = noMsgFmt + " message = %s"
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)
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if msg != "" {
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return fmt.Sprintf(msgFmt, code, msg)
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}
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return fmt.Sprintf(noMsgFmt, code)
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}
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func newStatusV2WithLocalCode(code status.Code, globalizer func(*status.Code)) *status.Status {
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var st status.Status
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st.SetCode(globalizeCodeV2(code, globalizer))
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return &st
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}
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func globalizeCodeV2(code status.Code, globalizer func(*status.Code)) status.Code {
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globalizer(&code)
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return code
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}
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