[repo] Fix slow init/teardown in cloud tests

.github/workflows/build.yml

@@ -256,11 +256,28 @@ jobs:
           EOF
       - name: Install Java client
         run: mvn --also-make --batch-mode --no-transfer-progress -DskipTests=true -Dmaven.javadoc.skip=true install
+      - name: Generate Database Name
+        run: |
+          # Combine the GitHub Run ID and a random number to guarantee uniqueness
+          RANDOM_DB="clickhouse_java_test_${GITHUB_RUN_ID}_${RANDOM}"
+
+          # Write it to GITHUB_ENV so future steps can access it as $DB_NAME
+          echo "TEST_DB_NAME=$RANDOM_DB" >> $GITHUB_ENV
+          echo "Generated database name: $RANDOM_DB"
+
+      - name: Create Temporary Database
+        env:
+          CLICKHOUSE_CLOUD_HOST: ${{ secrets.INTEGRATIONS_TEAM_TESTS_CLOUD_HOST_SMT_PROD }}
+          CLICKHOUSE_CLOUD_PASSWORD: ${{ secrets.INTEGRATIONS_TEAM_TESTS_CLOUD_PASSWORD_SMT_PROD }}
+        run: |
+          echo "Creating database: \`$TEST_DB_NAME\`"
+          curl -s -u "default:$CLICKHOUSE_CLOUD_PASSWORD" "https://$CLICKHOUSE_CLOUD_HOST:8443" --data-binary "CREATE DATABASE IF NOT EXISTS $TEST_DB_NAME"
       - name: Test http client
         env:
-          CLICKHOUSE_CLOUD_HOST: ${{ secrets.INTEGRATIONS_TEAM_TESTS_CLOUD_HOST_SMT }}
-          CLICKHOUSE_CLOUD_PASSWORD: ${{ secrets.INTEGRATIONS_TEAM_TESTS_CLOUD_PASSWORD_SMT }}
+          CLICKHOUSE_CLOUD_HOST: ${{ secrets.INTEGRATIONS_TEAM_TESTS_CLOUD_HOST_SMT_PROD }}
+          CLICKHOUSE_CLOUD_PASSWORD: ${{ secrets.INTEGRATIONS_TEAM_TESTS_CLOUD_PASSWORD_SMT_PROD }}
           CLIENT_JWT: ${{ secrets.INTEGRATIONS_TEAM_TESTS_CLOUD_JWT_DESERT_VM_43 }}
+          JWT_TEST_HOST: ${{ secrets.INTEGRATIONS_TEAM_TESTS_CLOUD_HOST_SMT }}
         run: |
           mvn --batch-mode --no-transfer-progress --projects ${{ matrix.project }} -DclickhouseVersion=${{ matrix.clickhouse }} -Dprotocol=http -Dmaven.javadoc.skip=true verify
       - name: Upload test results
@@ -271,6 +288,20 @@ jobs:
           path: |
             **/target/failsafe-reports
             **/target/surefire-reports
+      - name: Cleanup Database Unconditionally
+        if: always() # CRITICAL: This ensures the step runs regardless of previous success/failure
+        env:
+          CLICKHOUSE_CLOUD_HOST: ${{ secrets.INTEGRATIONS_TEAM_TESTS_CLOUD_HOST_SMT_PROD }}
+          CLICKHOUSE_CLOUD_PASSWORD: ${{ secrets.INTEGRATIONS_TEAM_TESTS_CLOUD_PASSWORD_SMT_PROD }}
+        run: |
+          # Verify we actually generated a DB name to avoid dropping something accidentally 
+          if [ -n "$TEST_DB_NAME" ]; then
+            DROP_STMT="DROP DATABASE IF EXISTS \`$TEST_DB_NAME\`" 
+            echo "Cleaning up database: \`$TEST_DB_NAME\` with statement '$DROP_STMT'";
+            curl -s -u "default:$CLICKHOUSE_CLOUD_PASSWORD" "https://$CLICKHOUSE_CLOUD_HOST:8443" --data-binary "$DROP_STMT";
+          else
+            echo "No database name was generated; skipping cleanup.";
+          fi;
 
   test-jdbc-driver:
     runs-on: ubuntu-latest
@@ -321,9 +352,6 @@ jobs:
       - name: Install Java client
         run: mvn --also-make --batch-mode --no-transfer-progress --projects clickhouse-http-client,client-v2 -DskipTests=true -Dmaven.javadoc.skip=true install
       - name: Test JDBC driver
-        env:
-          CLICKHOUSE_CLOUD_HOST: ${{ secrets.INTEGRATIONS_TEAM_TESTS_CLOUD_HOST_SMT }}
-          CLICKHOUSE_CLOUD_PASSWORD: ${{ secrets.INTEGRATIONS_TEAM_TESTS_CLOUD_PASSWORD_SMT }}
         run: |
           mvn --batch-mode --no-transfer-progress --projects clickhouse-jdbc,jdbc-v2 -DclickhouseVersion=${{ matrix.clickhouse }} -Dprotocol=${{ matrix.protocol }} -Dmaven.javadoc.skip=true verify
       - name: Upload test results

clickhouse-client/src/test/java/com/clickhouse/client/ClickHouseServerForTest.java

@@ -62,10 +62,20 @@
     private static boolean isCloud = false;
 
     private static final String database;
+    private static final boolean localDatabase;
 
     static {
         properties = new Properties(System.getProperties());
-        database = "clickhouse_java_" + UUID.randomUUID().toString().substring(0, 8) + "_test_" + System.currentTimeMillis();
+        String externalDatabase = System.getenv("TEST_DB_NAME"); // see build.yaml workflow
+        if (externalDatabase != null && !externalDatabase.trim().isEmpty()) {
+            localDatabase = false;
+            database = externalDatabase;
+        } else {
+            localDatabase = true;
+            database = "clickhouse_java_" + UUID.randomUUID().toString().substring(0, 8) + "_test_" + System.currentTimeMillis();
+        }
+
+        LOGGER.info("Local database: {}", localDatabase);
 
         String proxy = properties.getProperty("proxyAddress");
         if (proxy != null && !proxy.isEmpty()) { // use external proxy
@@ -320,10 +330,11 @@
     @BeforeSuite(groups = {"integration"})
     public static void beforeSuite() {
         if (isCloud) {
-            if (!runQuery("CREATE DATABASE IF NOT EXISTS " + database)) {
-                throw new RuntimeException("Failed to create database for testing.");
+            if (localDatabase) {
+                if (!runQuery("CREATE DATABASE IF NOT EXISTS " + database)) {
+                    throw new RuntimeException("Failed to create database for testing.");
+                }
             }
-
             return;
         }
 
@@ -358,8 +369,10 @@
         }
 
         if (isCloud) {
-            if (!runQuery("DROP DATABASE IF EXISTS `" + database + "`")) {
-                LOGGER.warn("Failed to drop database for testing.");
+            if (localDatabase) {
+                if (!runQuery("DROP DATABASE IF EXISTS `" + database + "`")) {
+                    LOGGER.warn("Failed to drop database for testing.");
+                }
             }
         }
     }
@@ -391,16 +404,17 @@
             try {
                 URL serverURL = new URL(uri);
                 LOGGER.info("sending request to {} (uri={})", serverURL, uri);
-
+                byte[] postData = sql.getBytes(StandardCharsets.UTF_8);
                 for (int attempts = 0; attempts < 10; attempts++) {
                     HttpURLConnection httpConn = (HttpURLConnection) serverURL.openConnection();
                     try {
                         httpConn.setRequestMethod("POST");
                         httpConn.setDoOutput(true);
                         httpConn.setRequestProperty("Authorization", "Basic " + Base64.getEncoder().encodeToString(("default:" + getPassword()).getBytes()));
+                        httpConn.setFixedLengthStreamingMode(postData.length);
 
                         try (OutputStream out = httpConn.getOutputStream()) {
-                            out.write(sql.getBytes(StandardCharsets.UTF_8));
+                            out.write(postData, 0, postData.length);
                             out.flush();
                         }
 

client-v2/src/test/java/com/clickhouse/client/HttpTransportTests.java

@@ -1218,10 +1218,17 @@ public void testJWTWithCloud() throws Exception {
         if (!isCloud()) {
             return; // only for cloud
         }
-        String jwt = System.getenv("CLIENT_JWT");
+        final String jwt = System.getenv("CLIENT_JWT");
+        final String host = System.getenv("JWT_TEST_HOST");
         Assert.assertTrue(jwt != null && !jwt.trim().isEmpty(), "JWT is missing");
         Assert.assertFalse(jwt.contains("\n") || jwt.contains("-----"), "JWT should be single string ready for HTTP header");
-        try (Client client = newClient().useBearerTokenAuth(jwt).build()) {
+        try (Client client = new Client.Builder()
+                .addEndpoint(Protocol.HTTP, host, 8443, true)
+                .setUsername("default")
+                .compressClientRequest(false)
+                .setDefaultDatabase("default")
+                .serverSetting(ServerSettings.WAIT_END_OF_QUERY, "1")
+                .useBearerTokenAuth(jwt).build()) {
             try {
                 List<GenericRecord> response = client.queryAll("SELECT user(), now()");
                 System.out.println("response: " + response.get(0).getString(1) + " time: " + response.get(0).getString(2));