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61 lines
1.8 KiB
Go
61 lines
1.8 KiB
Go
// Copyright 2020 Security Scorecard Authors
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package pkg
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import (
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"context"
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"fmt"
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"github.com/pkg/errors"
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"gocloud.dev/blob"
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//nolint
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_ "gocloud.dev/blob/gcsblob"
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)
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// Cache that use the blob storage like GCS or S3.
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type Cache struct {
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Bucket *blob.Bucket
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}
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// Get returns the []byte representation of the response and true if present, false if not.The
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// error is not returned to maintain compatabiltiy with the httpcache Cache interface.
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func (c *Cache) Get(key string) ([]byte, bool) {
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resp, err := c.Bucket.ReadAll(context.Background(), key)
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if err != nil {
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return nil, false
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}
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return resp, true
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}
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// Set saves response resp to the cache with key. The error is not returned to maintain compatabiltiy
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// with the httpcache Cache interface.
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func (c *Cache) Set(key string, resp []byte) error {
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return c.Bucket.WriteAll(context.Background(), key, resp, nil)
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}
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// Delete removes key from the cache.
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func (c *Cache) Delete(key string) error {
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return c.Bucket.Delete(context.Background(), key)
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}
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// NewBucket opens the bucket for caching.
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func NewBucket(bucketKey string) (*Cache, error) {
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b, err := blob.OpenBucket(context.Background(), bucketKey)
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if err != nil {
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return nil, errors.Wrap(err, fmt.Sprintf("error in opening the bucket %s", bucketKey))
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}
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return &Cache{Bucket: b}, nil
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}
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