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-rw-r--r--infra/minimal-distribution/src/main/java/io/fd/honeycomb/infra/distro/activation/ActiveModuleProvider.java150
1 files changed, 0 insertions, 150 deletions
diff --git a/infra/minimal-distribution/src/main/java/io/fd/honeycomb/infra/distro/activation/ActiveModuleProvider.java b/infra/minimal-distribution/src/main/java/io/fd/honeycomb/infra/distro/activation/ActiveModuleProvider.java
deleted file mode 100644
index d31024ce9..000000000
--- a/infra/minimal-distribution/src/main/java/io/fd/honeycomb/infra/distro/activation/ActiveModuleProvider.java
+++ /dev/null
@@ -1,150 +0,0 @@
-/*
- * Copyright (c) 2017 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.activation;
-
-import com.google.common.collect.ImmutableList;
-import com.google.inject.Inject;
-import com.google.inject.Module;
-import com.google.inject.Provider;
-import java.io.File;
-import java.io.IOException;
-import java.net.URI;
-import java.net.URISyntaxException;
-import java.net.URL;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-import java.util.Collections;
-import java.util.List;
-import java.util.Set;
-import java.util.stream.Collectors;
-import java.util.stream.Stream;
-import javax.annotation.Nonnull;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * Provides list of active modules for distribution
- */
-class ActiveModuleProvider implements Provider<ActiveModules> {
-
- private static final Logger LOG = LoggerFactory.getLogger(ActiveModuleProvider.class);
-
- @Inject
- private ActivationConfig config;
-
- @Override
- public ActiveModules get() {
- return new ActiveModules(loadActiveModules(
- aggregateResources(config.getModulesResourcePath(), Thread.currentThread().getContextClassLoader())));
- }
-
- /**
- * Provide unique set of active modules filtered from provided resources
- */
- static Set<Class<? extends Module>> loadActiveModules(@Nonnull final List<String> moduleNames) {
- final ClassLoader classLoader = ActiveModuleProvider.class.getClassLoader();
- LOG.info("Reading active modules configuration for distribution");
-
- // process resources to resource modules
- return moduleNames.stream()
- .map(String::trim)
- .filter(trimmedLine -> trimmedLine.length() != 0)
- // filter out commented lines
- .filter(nonEmptyLine -> !nonEmptyLine.startsWith("//"))
- // filter duplicates
- .distinct()
- .map(validLine -> moduleNameToClass(validLine, classLoader))
- // filters out classes that are not modules
- .filter(ActiveModuleProvider::filterNonModules)
- .collect(Collectors.toSet());
- }
-
- /**
- * Aggregate all resources from provided relative path into a {@code List<String>}
- */
- public static List<String> aggregateResources(final String relativePath, final ClassLoader classLoader) {
- try {
- return Collections.list(classLoader.getResources(relativePath)).stream()
- .map(ActiveModuleProvider::toURI)
- .flatMap(ActiveModuleProvider::folderToFile)
- .map(File::toURI)
- .map(Paths::get)
- // readAll lines and add them to iteration
- .flatMap(ActiveModuleProvider::readLines)
- .collect(Collectors.toList());
- } catch (IOException e) {
- LOG.error("Unable to load resources from relative path {}", relativePath, e);
- throw new IllegalStateException("Unable to load resources from relative path " + relativePath, e);
- }
- }
-
- private static Stream<File> folderToFile(final URI uri) {
- final File[] files = new File(uri).listFiles(File::isFile);
-
- return files != null
- ? ImmutableList.copyOf(files).stream()
- : Collections.<File>emptyList().stream();
- }
-
- private static boolean filterNonModules(final Class<?> clazz) {
- final boolean isModule = Module.class.isAssignableFrom(clazz);
- if (!isModule) {
- LOG.warn("Class {} is provided in modules configuration, but is not a Module and will be ignored", clazz);
- }
- return isModule;
- }
-
- /**
- * Read lines from {@code Path}
- */
- private static Stream<String> readLines(final Path path) {
- try {
- return Files.readAllLines(path).stream();
- } catch (IOException e) {
- LOG.error("Unable to read content of {}", path, e);
- throw new IllegalStateException("Unable to read content of " + path, e);
- }
- }
-
- /**
- * Converts {@code URL} to {@code URI}
- */
- private static URI toURI(final URL url) {
- try {
- return url.toURI();
- } catch (URISyntaxException e) {
- LOG.error("Unable to convert {} to uri", url);
- throw new IllegalStateException("Unable to convert " + url + " to uri", e);
- }
- }
-
- /**
- * Loads class by provided name
- */
- private static Class<? extends Module> moduleNameToClass(final String name,
- final ClassLoader classLoader) {
- try {
- LOG.debug("Loading module class {}", name);
- return (Class<? extends Module>) classLoader.loadClass(name);
- } catch (ClassNotFoundException e) {
- LOG.error("Unable to convert {} to class, make sure you've provided sources to classpath", name);
- throw new IllegalStateException(
- "Unable to convert " + name + " to class, make sure you've provided sources to classpath", e);
- }
- }
-}