103 lines
3.0 KiB
Go
103 lines
3.0 KiB
Go
/*
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Copyright 2021 The Dapr Authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package blobstorage
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import (
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"fmt"
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"net/url"
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"strconv"
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"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob"
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azauth "github.com/dapr/components-contrib/internal/authentication/azure"
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mdutils "github.com/dapr/components-contrib/metadata"
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)
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type BlobStorageMetadata struct {
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ContainerClientOpts `json:",inline" mapstructure:",squash"`
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DecodeBase64 bool `json:"decodeBase64,string"`
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PublicAccessLevel azblob.PublicAccessType
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}
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type ContainerClientOpts struct {
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// Use a connection string
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ConnectionString string
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ContainerName string
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// Use a shared account key
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AccountName string
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AccountKey string
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// Misc
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RetryCount int32 `json:"retryCount,string"`
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// Private properties
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containerURL *url.URL `json:"-" mapstructure:"-"`
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customEndpoint string `json:"-" mapstructure:"-"`
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}
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func parseMetadata(meta map[string]string) (*BlobStorageMetadata, error) {
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m := BlobStorageMetadata{}
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m.RetryCount = defaultBlobRetryCount
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mdutils.DecodeMetadata(meta, &m)
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if val, ok := mdutils.GetMetadataProperty(meta, azauth.StorageAccountNameKeys...); ok && val != "" {
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m.AccountName = val
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} else {
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return nil, fmt.Errorf("missing or empty %s field from metadata", azauth.StorageAccountNameKeys[0])
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}
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if val, ok := mdutils.GetMetadataProperty(meta, azauth.StorageContainerNameKeys...); ok && val != "" {
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m.ContainerName = val
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} else {
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return nil, fmt.Errorf("missing or empty %s field from metadata", azauth.StorageContainerNameKeys[0])
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}
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if val, ok := mdutils.GetMetadataProperty(meta, azauth.StorageAccountKeyKeys...); ok && val != "" {
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m.AccountKey = val
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}
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// per the Dapr documentation "none" is a valid value
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if m.PublicAccessLevel == "none" {
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m.PublicAccessLevel = ""
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}
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if m.PublicAccessLevel != "" && !isValidPublicAccessType(m.PublicAccessLevel) {
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return nil, fmt.Errorf("invalid public access level: %s; allowed: %s",
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m.PublicAccessLevel, azblob.PossiblePublicAccessTypeValues())
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}
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// we need this key for backwards compatibility
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if val, ok := meta["getBlobRetryCount"]; ok && val != "" {
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// convert val from string to int32
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parseInt, err := strconv.ParseInt(val, 10, 32)
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if err != nil {
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return nil, err
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}
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m.RetryCount = int32(parseInt)
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}
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return &m, nil
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}
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func isValidPublicAccessType(accessType azblob.PublicAccessType) bool {
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validTypes := azblob.PossiblePublicAccessTypeValues()
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for _, item := range validTypes {
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if item == accessType {
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return true
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}
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}
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return false
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}
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