go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/logdog/server/config/context_test.go (about)

     1  // Copyright 2020 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 config
    16  
    17  import (
    18  	"context"
    19  	"testing"
    20  	"time"
    21  
    22  	"go.chromium.org/luci/common/clock/testclock"
    23  	"go.chromium.org/luci/config"
    24  	"go.chromium.org/luci/config/cfgclient"
    25  	cfgmem "go.chromium.org/luci/config/impl/memory"
    26  	"go.chromium.org/luci/gae/impl/memory"
    27  	"go.chromium.org/luci/gae/service/datastore"
    28  
    29  	. "github.com/smartystreets/goconvey/convey"
    30  )
    31  
    32  func TestCache(t *testing.T) {
    33  	t.Parallel()
    34  
    35  	Convey("With mocks", t, func() {
    36  		configs := map[config.Set]cfgmem.Files{
    37  			"services/${appid}": {
    38  				"services.cfg": `coordinator { admin_auth_group: "a" }`,
    39  			},
    40  			"projects/a": {
    41  				"${appid}.cfg": `archive_gs_bucket: "a"`,
    42  			},
    43  		}
    44  
    45  		ctx := context.Background()
    46  		ctx = memory.Use(ctx)
    47  		ctx, tc := testclock.UseTime(ctx, testclock.TestTimeUTC)
    48  		ctx = cfgclient.Use(ctx, cfgmem.New(configs))
    49  		ctx = WithStore(ctx, &Store{})
    50  
    51  		sync := func() {
    52  			So(Sync(ctx), ShouldBeNil)
    53  			datastore.GetTestable(ctx).CatchupIndexes()
    54  		}
    55  
    56  		sync()
    57  
    58  		Convey("Service config cache", func() {
    59  			cfg, err := Config(ctx)
    60  			So(err, ShouldBeNil)
    61  			So(cfg.Coordinator.AdminAuthGroup, ShouldEqual, "a")
    62  
    63  			configs["services/${appid}"]["services.cfg"] = `coordinator { admin_auth_group: "b" }`
    64  			sync()
    65  
    66  			// Still seeing the cached config.
    67  			cfg, err = Config(ctx)
    68  			So(err, ShouldBeNil)
    69  			So(cfg.Coordinator.AdminAuthGroup, ShouldEqual, "a")
    70  
    71  			tc.Add(2 * time.Minute)
    72  
    73  			// The cache expired and we loaded a newer config.
    74  			cfg, err = Config(ctx)
    75  			So(err, ShouldBeNil)
    76  			So(cfg.Coordinator.AdminAuthGroup, ShouldEqual, "b")
    77  		})
    78  
    79  		Convey("Project config cache", func() {
    80  			cfg, err := ProjectConfig(ctx, "a")
    81  			So(err, ShouldBeNil)
    82  			So(cfg.ArchiveGsBucket, ShouldEqual, "a")
    83  
    84  			configs["projects/a"]["${appid}.cfg"] = `archive_gs_bucket: "b"`
    85  			sync()
    86  
    87  			// Still seeing the cached config.
    88  			cfg, err = ProjectConfig(ctx, "a")
    89  			So(err, ShouldBeNil)
    90  			So(cfg.ArchiveGsBucket, ShouldEqual, "a")
    91  
    92  			tc.Add(2 * time.Minute)
    93  
    94  			// The cache expired and we loaded a newer config.
    95  			cfg, err = ProjectConfig(ctx, "a")
    96  			So(err, ShouldBeNil)
    97  			So(cfg.ArchiveGsBucket, ShouldEqual, "b")
    98  		})
    99  
   100  		Convey("New project", func() {
   101  			// Missing initially.
   102  			_, err := ProjectConfig(ctx, "new")
   103  			So(err, ShouldEqual, config.ErrNoConfig)
   104  
   105  			// Appears.
   106  			configs["projects/new"] = cfgmem.Files{
   107  				"${appid}.cfg": `archive_gs_bucket: "a"`,
   108  			}
   109  			sync()
   110  
   111  			// Its absence is still cached.
   112  			_, err = ProjectConfig(ctx, "new")
   113  			So(err, ShouldEqual, config.ErrNoConfig)
   114  
   115  			tc.Add(2 * time.Minute)
   116  
   117  			// Appears now.
   118  			cfg, err := ProjectConfig(ctx, "new")
   119  			So(err, ShouldBeNil)
   120  			So(cfg.ArchiveGsBucket, ShouldEqual, "a")
   121  		})
   122  
   123  		Convey("Deleted project", func() {
   124  			cfg, err := ProjectConfig(ctx, "a")
   125  			So(err, ShouldBeNil)
   126  			So(cfg.ArchiveGsBucket, ShouldEqual, "a")
   127  
   128  			// Gone.
   129  			delete(configs, "projects/a")
   130  			sync()
   131  
   132  			// Old config is still cached.
   133  			cfg, err = ProjectConfig(ctx, "a")
   134  			So(err, ShouldBeNil)
   135  			So(cfg.ArchiveGsBucket, ShouldEqual, "a")
   136  
   137  			tc.Add(2 * time.Minute)
   138  
   139  			// Gone now.
   140  			_, err = ProjectConfig(ctx, "a")
   141  			So(err, ShouldEqual, config.ErrNoConfig)
   142  		})
   143  	})
   144  }