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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,204 @@ | ||
| /* | ||
| Copyright 2023 The Kubernetes Authors. | ||
| Licensed 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. | ||
| */ | ||
|
|
||
| package azure | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "strings" | ||
|
|
||
| "github.com/Azure/go-autorest/autorest/azure" | ||
| "sigs.k8s.io/cloud-provider-azure/pkg/retry" | ||
| ) | ||
|
|
||
| // Unknown is for errors that have nil RawError body | ||
| const Unknown CloudProviderErrorReason = "Unknown" | ||
|
|
||
| // Errors on the sync path | ||
| const ( | ||
| // QuotaExceeded falls under OperationNotAllowed error code but we make it more specific here | ||
| QuotaExceeded CloudProviderErrorReason = "QuotaExceeded" | ||
| // OperationNotAllowed is an umbrella for a lot of errors returned by Azure | ||
| OperationNotAllowed string = "OperationNotAllowed" | ||
| ) | ||
|
|
||
| // AutoscalerErrorType describes a high-level category of a given error | ||
| type AutoscalerErrorType string | ||
|
|
||
| // AutoscalerErrorReason is a more detailed reason for the failed operation | ||
| type AutoscalerErrorReason string | ||
|
|
||
| // CloudProviderErrorReason providers more details on errors of type CloudProviderError | ||
| type CloudProviderErrorReason AutoscalerErrorReason | ||
|
|
||
| // AutoscalerError contains information about Autoscaler errors | ||
| type AutoscalerError interface { | ||
| // Error implements golang error interface | ||
| Error() string | ||
|
|
||
| // Type returns the type of AutoscalerError | ||
| Type() AutoscalerErrorType | ||
|
|
||
| // Reason returns the reason of the AutoscalerError | ||
| Reason() AutoscalerErrorReason | ||
|
|
||
| // AddPrefix adds a prefix to error message. | ||
| // Returns the error it's called for convenient inline use. | ||
| // Example: | ||
| // if err := DoSomething(myObject); err != nil { | ||
| // return err.AddPrefix("can't do something with %v: ", myObject) | ||
| // } | ||
| AddPrefix(msg string, args ...interface{}) AutoscalerError | ||
| } | ||
|
|
||
| type autoscalerErrorImpl struct { | ||
| errorType AutoscalerErrorType | ||
| errorReason AutoscalerErrorReason | ||
| msg string | ||
| } | ||
|
|
||
| const ( | ||
| // CloudProviderError is an error related to underlying infrastructure | ||
| CloudProviderError AutoscalerErrorType = "CloudProviderError" | ||
| // ApiCallError is an error related to communication with k8s API server | ||
| ApiCallError AutoscalerErrorType = "ApiCallError" | ||
| // Timeout is an error related to nodes not joining the cluster in maxNodeProvisionTime | ||
| Timeout AutoscalerErrorType = "Timeout" | ||
| // InternalError is an error inside Cluster Autoscaler | ||
| InternalError AutoscalerErrorType = "InternalError" | ||
| // TransientError is an error that causes us to skip a single loop, but | ||
| // does not require any additional action. | ||
| TransientError AutoscalerErrorType = "TransientError" | ||
| // ConfigurationError is an error related to bad configuration provided | ||
| // by a user. | ||
| ConfigurationError AutoscalerErrorType = "ConfigurationError" | ||
| // NodeGroupDoesNotExistError signifies that a NodeGroup | ||
| // does not exist. | ||
| NodeGroupDoesNotExistError AutoscalerErrorType = "nodeGroupDoesNotExistError" | ||
| ) | ||
|
|
||
| const ( | ||
| // NodeRegistration signifies an error with node registering | ||
| NodeRegistration AutoscalerErrorReason = "NodeRegistration" | ||
| ) | ||
|
|
||
| // NewAutoscalerError returns new autoscaler error with a message constructed from format string | ||
| func NewAutoscalerError(errorType AutoscalerErrorType, msg string, args ...interface{}) AutoscalerError { | ||
| return autoscalerErrorImpl{ | ||
| errorType: errorType, | ||
| msg: fmt.Sprintf(msg, args...), | ||
| } | ||
| } | ||
|
|
||
| // NewAutoscalerErrorWithReason returns new autoscaler error with a reason and a message constructed from format string | ||
| func NewAutoscalerErrorWithReason(errorType AutoscalerErrorType, reason AutoscalerErrorReason, msg string, args ...interface{}) AutoscalerError { | ||
| return autoscalerErrorImpl{ | ||
| errorType: errorType, | ||
| errorReason: reason, | ||
| msg: fmt.Sprintf(msg, args...), | ||
| } | ||
| } | ||
|
|
||
| // NewAutoscalerCloudProviderError returns new autoscaler error with a cloudprovider error type and a message constructed from format string | ||
| func NewAutoscalerCloudProviderError(errorReason CloudProviderErrorReason, msg string, args ...interface{}) AutoscalerError { | ||
| return autoscalerErrorImpl{ | ||
| errorType: CloudProviderError, | ||
| errorReason: AutoscalerErrorReason(errorReason), | ||
| msg: fmt.Sprintf(msg, args...), | ||
| } | ||
| } | ||
|
|
||
| // ToAutoscalerError converts an error to AutoscalerError with given type, | ||
| // unless it already is an AutoscalerError (in which case it's not modified). | ||
| func ToAutoscalerError(defaultType AutoscalerErrorType, err error) AutoscalerError { | ||
| if err == nil { | ||
| return nil | ||
| } | ||
| if e, ok := err.(AutoscalerError); ok { | ||
| return e | ||
| } | ||
| return NewAutoscalerError(defaultType, "%v", err) | ||
| } | ||
|
|
||
| // Error implements golang error interface | ||
| func (e autoscalerErrorImpl) Error() string { | ||
| return e.msg | ||
| } | ||
|
|
||
| // Type returns the type of AutoscalerError | ||
| func (e autoscalerErrorImpl) Type() AutoscalerErrorType { | ||
| return e.errorType | ||
| } | ||
|
|
||
| func (e autoscalerErrorImpl) Reason() AutoscalerErrorReason { | ||
| return e.errorReason | ||
| } | ||
|
|
||
| // AddPrefix adds a prefix to error message. | ||
| // Returns the error it's called for convenient inline use. | ||
| // Example: | ||
| // if err := DoSomething(myObject); err != nil { | ||
| // | ||
| // return err.AddPrefix("can't do something with %v: ", myObject) | ||
| // | ||
| // } | ||
| func (e autoscalerErrorImpl) AddPrefix(msg string, args ...interface{}) AutoscalerError { | ||
| e.msg = fmt.Sprintf(msg, args...) + e.msg | ||
| return e | ||
| } | ||
|
|
||
| // ServiceRawError wraps the RawError returned by the k8s/cloudprovider | ||
| // Azure clients. The error body should satisfy the autorest.ServiceError type | ||
| type ServiceRawError struct { | ||
| ServiceError *azure.ServiceError `json:"error,omitempty"` | ||
| } | ||
|
|
||
| func azureToAutoscalerError(rerr *retry.Error) AutoscalerError { | ||
| if rerr == nil { | ||
| return nil | ||
| } | ||
| if rerr.RawError == nil { | ||
| return NewAutoscalerCloudProviderError(Unknown, rerr.Error().Error()) | ||
| } | ||
|
|
||
| re := ServiceRawError{} | ||
| err := json.Unmarshal([]byte(rerr.RawError.Error()), &re) | ||
| if err != nil { | ||
| return NewAutoscalerCloudProviderError(Unknown, rerr.Error().Error()) | ||
| } | ||
| se := re.ServiceError | ||
| if se == nil { | ||
| return NewAutoscalerCloudProviderError(Unknown, rerr.Error().Error()) | ||
| } | ||
| var errCode CloudProviderErrorReason | ||
| if se.Code == "" { | ||
| errCode = Unknown | ||
| } else if se.Code == OperationNotAllowed { | ||
| errCode = getOperationNotAllowedReason(se) | ||
| } else { | ||
| errCode = CloudProviderErrorReason(se.Code) | ||
| } | ||
| return NewAutoscalerCloudProviderError(errCode, se.Message) | ||
| } | ||
|
|
||
| // getOperationNotAllowedReason renames the error code for quotas to a more human-readable error | ||
| func getOperationNotAllowedReason(se *azure.ServiceError) CloudProviderErrorReason { | ||
| if strings.Contains(se.Message, "Quota increase") { | ||
| return QuotaExceeded | ||
| } | ||
| return CloudProviderErrorReason(OperationNotAllowed) | ||
| } |
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