75 lines
2.7 KiB
Go
75 lines
2.7 KiB
Go
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// Copyright 2016 Google Inc. All Rights Reserved.
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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 logadmin
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import (
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vkit "cloud.google.com/go/logging/apiv2"
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"golang.org/x/net/context"
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"google.golang.org/api/iterator"
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mrpb "google.golang.org/genproto/googleapis/api/monitoredres"
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logpb "google.golang.org/genproto/googleapis/logging/v2"
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)
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// ResourceDescriptors returns a ResourceDescriptorIterator
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// for iterating over MonitoredResourceDescriptors. Requires ReadScope or AdminScope.
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// See https://cloud.google.com/logging/docs/api/v2/#monitored-resources for an explanation of
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// monitored resources.
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// See https://cloud.google.com/logging/docs/api/v2/resource-list for a list of monitored resources.
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func (c *Client) ResourceDescriptors(ctx context.Context) *ResourceDescriptorIterator {
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it := &ResourceDescriptorIterator{
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it: c.lClient.ListMonitoredResourceDescriptors(ctx,
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&logpb.ListMonitoredResourceDescriptorsRequest{}),
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}
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it.pageInfo, it.nextFunc = iterator.NewPageInfo(
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it.fetch,
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func() int { return len(it.items) },
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func() interface{} { b := it.items; it.items = nil; return b })
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return it
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}
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// ResourceDescriptorIterator is an iterator over MonitoredResourceDescriptors.
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type ResourceDescriptorIterator struct {
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it *vkit.MonitoredResourceDescriptorIterator
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pageInfo *iterator.PageInfo
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nextFunc func() error
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items []*mrpb.MonitoredResourceDescriptor
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}
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// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
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func (it *ResourceDescriptorIterator) PageInfo() *iterator.PageInfo { return it.pageInfo }
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// Next returns the next result. Its second return value is Done if there are
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// no more results. Once Next returns Done, all subsequent calls will return
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// Done.
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func (it *ResourceDescriptorIterator) Next() (*mrpb.MonitoredResourceDescriptor, error) {
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if err := it.nextFunc(); err != nil {
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return nil, err
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}
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item := it.items[0]
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it.items = it.items[1:]
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return item, nil
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}
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func (it *ResourceDescriptorIterator) fetch(pageSize int, pageToken string) (string, error) {
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return iterFetch(pageSize, pageToken, it.it.PageInfo(), func() error {
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item, err := it.it.Next()
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if err != nil {
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return err
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}
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it.items = append(it.items, item)
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return nil
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})
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}
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