/usr/share/gocode/src/github.com/jacobsa/gcloud/gcs/gcsfake/conn.go is in golang-github-jacobsa-gcloud-dev 0.0~git20150709-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | // Copyright 2015 Google Inc. All Rights Reserved.
//
// 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 gcsfake
import (
"fmt"
"golang.org/x/net/context"
"github.com/jacobsa/gcloud/gcs"
"github.com/jacobsa/syncutil"
"github.com/jacobsa/timeutil"
)
// Create an "in-memory GCS" that allows access to buckets of any name, each
// initially with empty contents. The supplied clock will be used for
// generating timestamps.
func NewConn(clock timeutil.Clock) (c gcs.Conn) {
typed := &conn{
clock: clock,
buckets: make(map[string]gcs.Bucket),
}
typed.mu = syncutil.NewInvariantMutex(typed.checkInvariants)
c = typed
return
}
////////////////////////////////////////////////////////////////////////
// Implementation
////////////////////////////////////////////////////////////////////////
type conn struct {
clock timeutil.Clock
mu syncutil.InvariantMutex
// INVARIANT: For each k, v: v.Name() == k
//
// GUARDED_BY(mu)
buckets map[string]gcs.Bucket
}
// LOCKS_REQUIRED(c.mu)
func (c *conn) checkInvariants() {
// INVARIANT: For each k, v: v.Name() == k
for k, v := range c.buckets {
if v.Name() != k {
panic(fmt.Sprintf("Name mismatch: %q vs. %q", v.Name(), k))
}
}
}
// LOCKS_EXCLUDED(c.mu)
func (c *conn) OpenBucket(
ctx context.Context,
name string) (b gcs.Bucket, err error) {
c.mu.Lock()
defer c.mu.Unlock()
// Do we already know this bucket name?
b = c.buckets[name]
if b != nil {
return
}
// Create it.
b = NewFakeBucket(c.clock, name)
c.buckets[name] = b
return
}
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