generated from keboola/template
/
storage_hack.go
110 lines (90 loc) · 3.1 KB
/
storage_hack.go
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package keboola
import (
"context"
"errors"
"net/http"
"strings"
"github.com/keboola/go-client/pkg/client"
"github.com/keboola/go-client/pkg/request"
)
// ignoreResourceAlreadyExistsError is a workaround for problems with the Storage API.
// Sometimes it happens that the HTTP request ends with a 500 error, but the operation was performed.
// In that case, a retry is performed, which ends with an "already exists" error.
// The error should be ignored, because the CREATE operation was performed.
func ignoreResourceAlreadyExistsError(getFn func(context.Context) error) func(context.Context, request.HTTPResponse, error) error {
return func(ctx context.Context, response request.HTTPResponse, err error) error {
if isResourceAlreadyExistsError(response.RawResponse(), err) {
// Fill result with the GET request
return getFn(ctx)
}
return err
}
}
// ignoreResourceNotFoundError is a workaround for problems with the Storage API.
// Sometimes it happens that the HTTP request ends with a 500 error, but the operation was performed.
// In that case, a retry is performed, which ends with a "not found" error.
// The error should be ignored, because the DELETE operation was performed.
func ignoreResourceNotFoundError() func(context.Context, request.HTTPResponse, error) error {
return func(_ context.Context, response request.HTTPResponse, err error) error {
if isResourceNotFoundError(response.RawResponse(), err) {
return nil
}
return err
}
}
func isResourceAlreadyExistsError(response *http.Response, err error) bool {
var storageAPIError *StorageError
// There must be an HTTP response
if response == nil {
return false
}
// There must be an HTTP request
if response.Request == nil {
return false
}
// There must be a retry, so the operation was performed but the HTTP request ended with an error.
if attempt, _ := client.ContextRetryAttempt(response.Request.Context()); attempt == 0 {
return false
}
// It must be a Storage API error
if !errors.As(err, &storageAPIError) {
return false
}
// The error HTTP code must match
if response.StatusCode != http.StatusBadRequest {
return false
}
// The error code must match, for example "configurationAlreadyExists"
if !strings.HasSuffix(storageAPIError.ErrCode, "AlreadyExists") {
return false
}
return true
}
func isResourceNotFoundError(response *http.Response, err error) bool {
var storageAPIError *StorageError
// There must be an HTTP response
if response == nil {
return false
}
// There must be an HTTP request
if response.Request == nil {
return false
}
// There must be a retry, so the operation was performed but the HTTP request ended with an error.
if attempt, _ := client.ContextRetryAttempt(response.Request.Context()); attempt == 0 {
return false
}
// It must be a Storage API error
if !errors.As(err, &storageAPIError) {
return false
}
// The error HTTP code must match
if response.StatusCode != http.StatusNotFound {
return false
}
// The error code must match, for example "storage.bucket.notFound"
if !strings.HasSuffix(storageAPIError.ErrCode, "notFound") {
return false
}
return true
}