| // Copyright 2022 The LUCI Authors. |
| // |
| // 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 listener |
| |
| import ( |
| "context" |
| "regexp" |
| |
| "go.chromium.org/luci/common/errors" |
| "go.chromium.org/luci/common/retry/transient" |
| |
| "go.chromium.org/luci/cv/internal/configs/srvcfg" |
| ) |
| |
| // IsPubsubEnabled returns whether listener is configured to process pubsub |
| // messages for a given project. |
| // |
| // The returned value only tells the intention, based on the config. |
| // It's possible that listener |
| // - is still processing pubsub messages even if this function returns false |
| // - stopped processing pubsub messages even if this function returns true |
| func IsPubsubEnabled(ctx context.Context, prj string) (bool, error) { |
| cfg, err := srvcfg.GetListenerConfig(ctx, nil) |
| if err != nil { |
| return false, transient.Tag.Apply(err) |
| } |
| |
| res, err := anchorRegexps(cfg.GetEnabledProjectRegexps()) |
| if err != nil { |
| // The config validation shouldn't allow this to happen. |
| return false, err |
| } |
| for _, re := range res { |
| if re.Match([]byte(prj)) { |
| return true, nil |
| } |
| } |
| return false, nil |
| } |
| |
| // anchorRegexps converts partial match regexs to full matches. |
| // |
| // Returns compiled regexps of them. |
| func anchorRegexps(partials []string) ([]*regexp.Regexp, error) { |
| var me errors.MultiError |
| var res []*regexp.Regexp |
| for _, p := range partials { |
| re, err := regexp.Compile("^" + p + "$") |
| me.MaybeAdd(err) |
| res = append(res, re) |
| } |
| if me.AsError() == nil { |
| return res, nil |
| } |
| return nil, me |
| } |