go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/auth_service/internal/configs/srvcfg/settingscfg/config.go (about)

     1  // Copyright 2024 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package settingscfg
    16  
    17  import (
    18  	"context"
    19  
    20  	"go.chromium.org/luci/config"
    21  	"go.chromium.org/luci/config/server/cfgcache"
    22  
    23  	"go.chromium.org/luci/auth_service/api/configspb"
    24  )
    25  
    26  var cachedSettingsCfg = cfgcache.Register(&cfgcache.Entry{
    27  	Path: "settings.cfg",
    28  	Type: (*configspb.SettingsCfg)(nil),
    29  })
    30  
    31  // Get returns the config stored in context.
    32  func Get(ctx context.Context) (*configspb.SettingsCfg, error) {
    33  	cfg, err := cachedSettingsCfg.Get(ctx, nil)
    34  	if err != nil {
    35  		return nil, err
    36  	}
    37  	return cfg.(*configspb.SettingsCfg), nil
    38  }
    39  
    40  // SetConfig installs the config into the context.
    41  func SetConfig(ctx context.Context, cfg *configspb.SettingsCfg) error {
    42  	return cachedSettingsCfg.Set(ctx, cfg, &config.Meta{})
    43  }
    44  
    45  // Update fetches the config and puts it into the datastore.
    46  //
    47  // It is then used by all requests that go through Middleware.
    48  func Update(ctx context.Context) error {
    49  	_, err := cachedSettingsCfg.Update(ctx, nil)
    50  	return err
    51  }