Run upgrade tests for SQLite too (#2875)

This should hopefully catch problems with database migrations in SQLite
as well as PostgreSQL.

.github/workflows/dendrite.yml

@@ -231,8 +231,10 @@ jobs:
             ${{ runner.os }}-go-upgrade
       - name: Build upgrade-tests
         run: go build ./cmd/dendrite-upgrade-tests
-      - name: Test upgrade
+      - name: Test upgrade (PostgreSQL)
         run: ./dendrite-upgrade-tests --head .
+      - name: Test upgrade (SQLite)
+        run: ./dendrite-upgrade-tests --sqlite --head .
 
   # run database upgrade tests, skipping over one version
   upgrade_test_direct:
@@ -256,7 +258,9 @@ jobs:
             ${{ runner.os }}-go-upgrade
       - name: Build upgrade-tests
         run: go build ./cmd/dendrite-upgrade-tests
-      - name: Test upgrade
+      - name: Test upgrade (PostgreSQL)
+        run: ./dendrite-upgrade-tests -direct -from HEAD-2 --head .
+      - name: Test upgrade (SQLite)
         run: ./dendrite-upgrade-tests -direct -from HEAD-2 --head .
 
   # run Sytest in different variations

cmd/dendrite-upgrade-tests/main.go

@@ -38,6 +38,7 @@ var (
 	flagHead             = flag.String("head", "", "Location to a dendrite repository to treat as HEAD instead of Github")
 	flagDockerHost       = flag.String("docker-host", "localhost", "The hostname of the docker client. 'localhost' if running locally, 'host.docker.internal' if running in Docker.")
 	flagDirect           = flag.Bool("direct", false, "If a direct upgrade from the defined FROM version to TO should be done")
+	flagSqlite           = flag.Bool("sqlite", false, "Test SQLite instead of PostgreSQL")
 	alphaNumerics        = regexp.MustCompile("[^a-zA-Z0-9]+")
 )
 
@@ -49,7 +50,7 @@ const HEAD = "HEAD"
 // due to the error:
 // When using COPY with more than one source file, the destination must be a directory and end with a /
 // We need to run a postgres anyway, so use the dockerfile associated with Complement instead.
-const Dockerfile = `FROM golang:1.18-stretch as build
+const DockerfilePostgreSQL = `FROM golang:1.18-stretch as build
 RUN apt-get update && apt-get install -y postgresql
 WORKDIR /build
 
@@ -92,6 +93,42 @@ ENV SERVER_NAME=localhost
 EXPOSE 8008 8448
 CMD /build/run_dendrite.sh `
 
+const DockerfileSQLite = `FROM golang:1.18-stretch as build
+RUN apt-get update && apt-get install -y postgresql
+WORKDIR /build
+
+# Copy the build context to the repo as this is the right dendrite code. This is different to the
+# Complement Dockerfile which wgets a branch.
+COPY . .
+
+RUN go build ./cmd/dendrite-monolith-server
+RUN go build ./cmd/generate-keys
+RUN go build ./cmd/generate-config
+RUN ./generate-config --ci > dendrite.yaml
+RUN ./generate-keys --private-key matrix_key.pem --tls-cert server.crt --tls-key server.key
+
+# Make sure the SQLite databases are in a persistent location, we're already mapping
+# the postgresql folder so let's just use that for simplicity
+RUN sed -i "s%connection_string:.file:%connection_string: file:\/var\/lib\/postgresql\/9.6\/main\/%g" dendrite.yaml 
+
+# This entry script starts postgres, waits for it to be up then starts dendrite
+RUN echo '\
+sed -i "s/server_name: localhost/server_name: ${SERVER_NAME}/g" dendrite.yaml \n\
+PARAMS="--tls-cert server.crt --tls-key server.key --config dendrite.yaml" \n\
+./dendrite-monolith-server --really-enable-open-registration ${PARAMS} || ./dendrite-monolith-server ${PARAMS} \n\
+' > run_dendrite.sh && chmod +x run_dendrite.sh
+
+ENV SERVER_NAME=localhost
+EXPOSE 8008 8448
+CMD /build/run_dendrite.sh `
+
+func dockerfile() []byte {
+	if *flagSqlite {
+		return []byte(DockerfileSQLite)
+	}
+	return []byte(DockerfilePostgreSQL)
+}
+
 const dendriteUpgradeTestLabel = "dendrite_upgrade_test"
 
 // downloadArchive downloads an arbitrary github archive of the form:
@@ -150,7 +187,7 @@ func buildDendrite(httpClient *http.Client, dockerClient *client.Client, tmpDir,
 	if branchOrTagName == HEAD && *flagHead != "" {
 		log.Printf("%s: Using %s as HEAD", branchOrTagName, *flagHead)
 		// add top level Dockerfile
-		err = os.WriteFile(path.Join(*flagHead, "Dockerfile"), []byte(Dockerfile), os.ModePerm)
+		err = os.WriteFile(path.Join(*flagHead, "Dockerfile"), dockerfile(), os.ModePerm)
 		if err != nil {
 			return "", fmt.Errorf("custom HEAD: failed to inject /Dockerfile: %w", err)
 		}
@@ -166,7 +203,7 @@ func buildDendrite(httpClient *http.Client, dockerClient *client.Client, tmpDir,
 		// pull an archive, this contains a top-level directory which screws with the build context
 		// which we need to fix up post download
 		u := fmt.Sprintf("https://github.com/matrix-org/dendrite/archive/%s.tar.gz", branchOrTagName)
-		tarball, err = downloadArchive(httpClient, tmpDir, u, []byte(Dockerfile))
+		tarball, err = downloadArchive(httpClient, tmpDir, u, dockerfile())
 		if err != nil {
 			return "", fmt.Errorf("failed to download archive %s: %w", u, err)
 		}