--- /dev/null
+/*
+ * 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;
+
+import static com.google.inject.Guice.createInjector;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.inject.ConfigurationException;
+import com.google.inject.CreationException;
+import com.google.inject.Injector;
+import com.google.inject.Key;
+import com.google.inject.Module;
+import com.google.inject.ProvisionException;
+import com.google.inject.name.Names;
+
+import io.fd.honeycomb.data.init.DataTreeInitializer;
+import io.fd.honeycomb.data.init.InitializerRegistry;
+import io.fd.honeycomb.infra.distro.activation.ActivationModule;
+import io.fd.honeycomb.infra.distro.activation.ActiveModules;
+import io.fd.honeycomb.infra.distro.initializer.InitializerPipelineModule;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public final class Main {
+
+ private static final Logger LOG = LoggerFactory.getLogger(Main.class);
+
+ private Main() {
+ }
+
+ public static void main(String[] args) {
+ init(new ActivationModule());
+ }
+
+ /**
+ * Initialize the Honeycomb with provided modules
+ */
+ public static Injector init(final ActivationModule activationModule) {
+ try {
+ LOG.info("Starting honeycomb");
+ // creating child injector does not work in this case, so just create injector, and does not store ref
+ // to it, or its active modules instance
+ Injector injector = createInjector(ImmutableSet.<Module>builder()
+ .add(activationModule)
+ .addAll(createInjector(activationModule).getInstance(ActiveModules.class).createModuleInstances())
+ .build());
+
+ // Log all bindings
+ injector.getAllBindings().entrySet().stream()
+ .forEach(e -> LOG.trace("Component available under: {} is {}", e.getKey(), e.getValue()));
+
+ try {
+ LOG.info("Initializing configuration");
+ injector.getInstance(Key.get(InitializerRegistry.class,
+ Names.named(InitializerPipelineModule.HONEYCOMB_INITIALIZER))).initialize();
+ LOG.info("Configuration initialized successfully");
+ } catch (DataTreeInitializer.InitializeException e) {
+ LOG.error("Unable to initialize configuration", e);
+ }
+
+
+ LOG.info("Honeycomb started successfully!");
+ return injector;
+ } catch (CreationException | ProvisionException | ConfigurationException e) {
+ LOG.error("Failed to initialize Honeycomb components", e);
+ throw e;
+ } catch (RuntimeException e) {
+ LOG.error("Unexpected initialization failure", e);
+ throw e;
+ } finally {
+ // Trigger gc to force collect initial garbage + dedicated classloader
+ System.gc();
+ }
+ }
+
+}