1 files changed, 69 insertions, 0 deletions
diff --git a/infra/minimal-distribution/src/main/java/io/fd/honeycomb/infra/distro/schema/YangModuleMappingIndex.java b/infra/minimal-distribution/src/main/java/io/fd/honeycomb/infra/distro/schema/YangModuleMappingIndex.java
new file mode 100644
index 000000000..a483cfd9c
--- /dev/null
+++ b/infra/minimal-distribution/src/main/java/io/fd/honeycomb/infra/distro/schema/YangModuleMappingIndex.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.honeycomb.infra.distro.schema;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.LinkedListMultimap;
+import com.google.common.collect.Multimap;
+import java.util.Arrays;
+import java.util.Set;
+import java.util.stream.Stream;
+import javax.annotation.Nonnull;
+
+/**
+ * Index from guice module to yang module providers
+ */
+class YangModuleMappingIndex implements ResourceLoader {
+
+    private static final String G_MODULE_TOKEN = "GUICE_MODULE:";
+    private static final String KEY_VALUE_SEPARATOR = "|";
+    private static final String Y_MODULE_TOKEN = "YANG_MODULES:";
+    private static final String Y_MODULE_SEPARATOR = ",";
+
+    /**
+     * key - module class name
+     * value  - yang module provider
+     */
+    private final Multimap<String, String> index;
+
+    YangModuleMappingIndex(final String indexPath) {
+        this.index = LinkedListMultimap.create();
+        loadResourceContentsOnPath(indexPath)
+                .forEach(line -> {
+                    final String moduleName = parseModuleName(line);
+                    parseYangModules(line).forEach(yModuleProvider -> index.put(moduleName, yModuleProvider));
+                });
+    }
+
+    Set<String> getByModuleName(@Nonnull final String moduleName) {
+        return ImmutableSet.copyOf(index.get(moduleName));
+    }
+
+    int applicationModulesCount() {
+        return index.keySet().size();
+    }
+
+    private static String parseModuleName(final String rawLine) {
+        return rawLine.substring(rawLine.indexOf(G_MODULE_TOKEN) + G_MODULE_TOKEN.length(),
+                rawLine.indexOf(KEY_VALUE_SEPARATOR));
+    }
+
+    private static Stream<String> parseYangModules(final String rawLine) {
+        return Arrays.stream(rawLine.substring(rawLine.indexOf(Y_MODULE_TOKEN) + Y_MODULE_TOKEN.length())
+                .split(Y_MODULE_SEPARATOR));
+    }
+}