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