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129 lines
3.5 KiB
129 lines
3.5 KiB
// Copyright 2017 Google LLC
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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 storage
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import (
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"cloud.google.com/go/iam"
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"cloud.google.com/go/internal/trace"
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"golang.org/x/net/context"
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raw "google.golang.org/api/storage/v1"
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iampb "google.golang.org/genproto/googleapis/iam/v1"
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)
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// IAM provides access to IAM access control for the bucket.
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func (b *BucketHandle) IAM() *iam.Handle {
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return iam.InternalNewHandleClient(&iamClient{
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raw: b.c.raw,
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userProject: b.userProject,
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}, b.name)
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}
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// iamClient implements the iam.client interface.
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type iamClient struct {
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raw *raw.Service
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userProject string
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}
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func (c *iamClient) Get(ctx context.Context, resource string) (p *iampb.Policy, err error) {
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ctx = trace.StartSpan(ctx, "cloud.google.com/go/storage.IAM.Get")
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defer func() { trace.EndSpan(ctx, err) }()
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call := c.raw.Buckets.GetIamPolicy(resource)
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setClientHeader(call.Header())
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if c.userProject != "" {
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call.UserProject(c.userProject)
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}
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var rp *raw.Policy
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err = runWithRetry(ctx, func() error {
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rp, err = call.Context(ctx).Do()
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return err
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})
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if err != nil {
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return nil, err
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}
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return iamFromStoragePolicy(rp), nil
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}
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func (c *iamClient) Set(ctx context.Context, resource string, p *iampb.Policy) (err error) {
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ctx = trace.StartSpan(ctx, "cloud.google.com/go/storage.IAM.Set")
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defer func() { trace.EndSpan(ctx, err) }()
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rp := iamToStoragePolicy(p)
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call := c.raw.Buckets.SetIamPolicy(resource, rp)
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setClientHeader(call.Header())
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if c.userProject != "" {
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call.UserProject(c.userProject)
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}
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return runWithRetry(ctx, func() error {
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_, err := call.Context(ctx).Do()
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return err
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})
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}
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func (c *iamClient) Test(ctx context.Context, resource string, perms []string) (permissions []string, err error) {
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ctx = trace.StartSpan(ctx, "cloud.google.com/go/storage.IAM.Test")
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defer func() { trace.EndSpan(ctx, err) }()
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call := c.raw.Buckets.TestIamPermissions(resource, perms)
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setClientHeader(call.Header())
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if c.userProject != "" {
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call.UserProject(c.userProject)
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}
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var res *raw.TestIamPermissionsResponse
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err = runWithRetry(ctx, func() error {
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res, err = call.Context(ctx).Do()
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return err
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})
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if err != nil {
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return nil, err
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}
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return res.Permissions, nil
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}
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func iamToStoragePolicy(ip *iampb.Policy) *raw.Policy {
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return &raw.Policy{
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Bindings: iamToStorageBindings(ip.Bindings),
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Etag: string(ip.Etag),
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}
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}
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func iamToStorageBindings(ibs []*iampb.Binding) []*raw.PolicyBindings {
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var rbs []*raw.PolicyBindings
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for _, ib := range ibs {
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rbs = append(rbs, &raw.PolicyBindings{
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Role: ib.Role,
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Members: ib.Members,
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})
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}
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return rbs
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}
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func iamFromStoragePolicy(rp *raw.Policy) *iampb.Policy {
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return &iampb.Policy{
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Bindings: iamFromStorageBindings(rp.Bindings),
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Etag: []byte(rp.Etag),
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}
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}
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func iamFromStorageBindings(rbs []*raw.PolicyBindings) []*iampb.Binding {
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var ibs []*iampb.Binding
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for _, rb := range rbs {
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ibs = append(ibs, &iampb.Binding{
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Role: rb.Role,
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Members: rb.Members,
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})
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}
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return ibs
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}
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