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https://github.com/superseriousbusiness/gotosocial.git
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9d0df426da
* feat: vendor minio client * feat: introduce storage package with s3 support * feat: serve s3 files directly this saves a lot of bandwith as the files are fetched from the object store directly * fix: use explicit local storage in tests * feat: integrate s3 storage with the main server * fix: add s3 config to cli tests * docs: explicitly set values in example config also adds license header to the storage package * fix: use better http status code on s3 redirect HTTP 302 Found is the best fit, as it signifies that the resource requested was found but not under its presumed URL 307/TemporaryRedirect would mean that this resource is usually located here, not in this case 303/SeeOther indicates that the redirection does not link to the requested resource but to another page * refactor: use context in storage driver interface
90 lines
2.9 KiB
Go
90 lines
2.9 KiB
Go
/*
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* MinIO Go Library for Amazon S3 Compatible Cloud Storage
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* Copyright 2017 MinIO, Inc.
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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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*/
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package credentials
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// A Chain will search for a provider which returns credentials
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// and cache that provider until Retrieve is called again.
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//
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// The Chain provides a way of chaining multiple providers together
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// which will pick the first available using priority order of the
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// Providers in the list.
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//
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// If none of the Providers retrieve valid credentials Value, ChainProvider's
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// Retrieve() will return the no credentials value.
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//
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// If a Provider is found which returns valid credentials Value ChainProvider
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// will cache that Provider for all calls to IsExpired(), until Retrieve is
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// called again after IsExpired() is true.
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//
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// creds := credentials.NewChainCredentials(
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// []credentials.Provider{
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// &credentials.EnvAWSS3{},
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// &credentials.EnvMinio{},
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// })
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//
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// // Usage of ChainCredentials.
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// mc, err := minio.NewWithCredentials(endpoint, creds, secure, "us-east-1")
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// if err != nil {
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// log.Fatalln(err)
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// }
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//
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type Chain struct {
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Providers []Provider
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curr Provider
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}
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// NewChainCredentials returns a pointer to a new Credentials object
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// wrapping a chain of providers.
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func NewChainCredentials(providers []Provider) *Credentials {
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return New(&Chain{
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Providers: append([]Provider{}, providers...),
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})
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}
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// Retrieve returns the credentials value, returns no credentials(anonymous)
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// if no credentials provider returned any value.
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//
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// If a provider is found with credentials, it will be cached and any calls
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// to IsExpired() will return the expired state of the cached provider.
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func (c *Chain) Retrieve() (Value, error) {
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for _, p := range c.Providers {
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creds, _ := p.Retrieve()
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// Always prioritize non-anonymous providers, if any.
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if creds.AccessKeyID == "" && creds.SecretAccessKey == "" {
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continue
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}
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c.curr = p
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return creds, nil
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}
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// At this point we have exhausted all the providers and
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// are left without any credentials return anonymous.
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return Value{
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SignerType: SignatureAnonymous,
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}, nil
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}
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// IsExpired will returned the expired state of the currently cached provider
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// if there is one. If there is no current provider, true will be returned.
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func (c *Chain) IsExpired() bool {
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if c.curr != nil {
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return c.curr.IsExpired()
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}
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return true
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}
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