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LRU cache for room versions in RS query API (#976)

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* Experimental LRU cache for room versions

* Don't accidentally try to type-assert nil

* Also reduce hits on query API

* Use hashicorp implementation which mutexes for us

* Define const for max cache entries

* Rename to be specifically immutable, panic if we try to mutate a cache entry

* Review comments

* Remove nil guards, give roomserver integration test a cache

* go mod tidy
This commit is contained in:
Neil Alexander 2020-04-22 13:00:05 +01:00 • committed by GitHub
parent 71f9d35b7c
commit a466e9e9cc
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7 changed files with 112 additions and 22 deletions
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8
cmd/roomserver-integration-tests/main.go
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@ -28,6 +28,7 @@ import (
"net/http"
"github.com/matrix-org/dendrite/common/caching"
"github.com/matrix-org/dendrite/common/test"
"github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/gomatrixserverlib"
@ -253,6 +254,11 @@ func testRoomserver(input []string, wantOutput []string, checkQueries func(api.R
panic(err)
}
cache, err := caching.NewImmutableInMemoryLRUCache()
if err != nil {
panic(err)
}
doInput := func() {
fmt.Printf("Roomserver is ready to receive input, sending %d events\n", len(input))
if err = writeToRoomServer(input, cfg.RoomServerURL()); err != nil {
@ -270,7 +276,7 @@ func testRoomserver(input []string, wantOutput []string, checkQueries func(api.R
cmd.Args = []string{"dendrite-room-server", "--config", filepath.Join(dir, test.ConfigFile)}
gotOutput, err := runAndReadFromTopic(cmd, cfg.RoomServerURL()+"/metrics", doInput, outputTopic, len(wantOutput), func() {
queryAPI, _ := api.NewRoomserverQueryAPIHTTP("http://"+string(cfg.Listen.RoomServer), &http.Client{Timeout: timeoutHTTP})
queryAPI, _ := api.NewRoomserverQueryAPIHTTP("http://"+string(cfg.Listen.RoomServer), &http.Client{Timeout: timeoutHTTP}, cache)
checkQueries(queryAPI)
})
if err != nil {