1 files changed, 94 insertions, 0 deletions
diff --git a/java/com/google/gerrit/server/config/TrackingFootersProvider.java b/java/com/google/gerrit/server/config/TrackingFootersProvider.java
new file mode 100644
index 0000000000..ff1910d446
--- /dev/null
+++ b/java/com/google/gerrit/server/config/TrackingFootersProvider.java
@@ -0,0 +1,94 @@
+// Copyright (C) 2010 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gerrit.server.config;
+
+import com.google.common.flogger.FluentLogger;
+import com.google.gerrit.reviewdb.client.TrackingId;
+import com.google.inject.Inject;
+import com.google.inject.Provider;
+import com.google.inject.Singleton;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.regex.PatternSyntaxException;
+import org.eclipse.jgit.lib.Config;
+
+/** Provides a list of all configured {@link TrackingFooter}s. */
+@Singleton
+public class TrackingFootersProvider implements Provider<TrackingFooters> {
+  private static final FluentLogger logger = FluentLogger.forEnclosingClass();
+
+  private static String TRACKING_ID_TAG = "trackingid";
+  private static String FOOTER_TAG = "footer";
+  private static String SYSTEM_TAG = "system";
+  private static String REGEX_TAG = "match";
+  private final List<TrackingFooter> trackingFooters = new ArrayList<>();
+
+  @Inject
+  TrackingFootersProvider(@GerritServerConfig Config cfg) {
+    for (String name : cfg.getSubsections(TRACKING_ID_TAG)) {
+      boolean configValid = true;
+
+      Set<String> footers =
+          new HashSet<>(Arrays.asList(cfg.getStringList(TRACKING_ID_TAG, name, FOOTER_TAG)));
+      footers.removeAll(Collections.singleton(null));
+
+      if (footers.isEmpty()) {
+        configValid = false;
+        logger.atSevere().log(
+            "Missing %s.%s.%s in gerrit.config", TRACKING_ID_TAG, name, FOOTER_TAG);
+      }
+
+      String system = cfg.getString(TRACKING_ID_TAG, name, SYSTEM_TAG);
+      if (system == null || system.isEmpty()) {
+        configValid = false;
+        logger.atSevere().log(
+            "Missing %s.%s.%s in gerrit.config", TRACKING_ID_TAG, name, SYSTEM_TAG);
+      } else if (system.length() > TrackingId.TRACKING_SYSTEM_MAX_CHAR) {
+        configValid = false;
+        logger.atSevere().log(
+            "String too long \"%s\" in gerrit.config %s.%s.%s (max %d char)",
+            system, TRACKING_ID_TAG, name, SYSTEM_TAG, TrackingId.TRACKING_SYSTEM_MAX_CHAR);
+      }
+
+      String match = cfg.getString(TRACKING_ID_TAG, name, REGEX_TAG);
+      if (match == null || match.isEmpty()) {
+        configValid = false;
+        logger.atSevere().log(
+            "Missing %s.%s.%s in gerrit.config", TRACKING_ID_TAG, name, REGEX_TAG);
+      }
+
+      if (configValid) {
+        try {
+          for (String footer : footers) {
+            trackingFooters.add(new TrackingFooter(footer, match, system));
+          }
+        } catch (PatternSyntaxException e) {
+          logger.atSevere().log(
+              "Invalid pattern \"%s\" in gerrit.config %s.%s.%s: %s",
+              match, TRACKING_ID_TAG, name, REGEX_TAG, e.getMessage());
+        }
+      }
+    }
+  }
+
+  @Override
+  public TrackingFooters get() {
+    return new TrackingFooters(trackingFooters);
+  }
+}