summaryrefslogtreecommitdiffstats
path: root/infra/minimal-distribution/src/main/java/io/fd/honeycomb/infra/distro/schema/ResourceLoader.java
diff options
context:
space:
mode:
Diffstat (limited to 'infra/minimal-distribution/src/main/java/io/fd/honeycomb/infra/distro/schema/ResourceLoader.java')
-rw-r--r--infra/minimal-distribution/src/main/java/io/fd/honeycomb/infra/distro/schema/ResourceLoader.java135
1 files changed, 0 insertions, 135 deletions
diff --git a/infra/minimal-distribution/src/main/java/io/fd/honeycomb/infra/distro/schema/ResourceLoader.java b/infra/minimal-distribution/src/main/java/io/fd/honeycomb/infra/distro/schema/ResourceLoader.java
deleted file mode 100644
index c851dab1b..000000000
--- a/infra/minimal-distribution/src/main/java/io/fd/honeycomb/infra/distro/schema/ResourceLoader.java
+++ /dev/null
@@ -1,135 +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.schema;
-
-import static com.google.common.base.Preconditions.checkNotNull;
-import static java.lang.String.format;
-
-import com.google.common.base.Charsets;
-import com.google.common.base.Strings;
-import com.google.common.io.Resources;
-import java.io.File;
-import java.io.IOException;
-import java.io.InputStream;
-import java.net.MalformedURLException;
-import java.net.URI;
-import java.net.URISyntaxException;
-import java.net.URL;
-import java.nio.charset.StandardCharsets;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.Set;
-import java.util.jar.JarEntry;
-import java.util.jar.JarFile;
-import java.util.stream.Collectors;
-import org.apache.commons.io.IOUtils;
-
-interface ResourceLoader {
-
- default Set<String> loadResourceContentsOnPath(final String path) {
- final URL folderUrl = getClass().getClassLoader().getResource(path);
- checkNotNull(folderUrl, "Resources %s not found", path);
-
- if (ResourceLoaderIml.urlToUri(folderUrl).getScheme().equals("jar")) {
- return ResourceLoaderIml.readFromJar(path, folderUrl);
- } else {
- return ResourceLoaderIml.readFromFolder(folderUrl);
- }
-
- }
-
- final class ResourceLoaderIml {
-
- private static Set<String> readFromFolder(final URL folderUrl) {
- final File folder = new File(folderUrl.getPath());
- final File[] files = checkNotNull(folder.listFiles(), "No files present on path %s", folderUrl);
- return Arrays.stream(files)
- .map(ResourceLoaderIml::fileToUrl)
- .map(ResourceLoaderIml::urlToContentString)
- .flatMap(content -> Arrays.stream(content.split(System.lineSeparator())))
- .filter(ResourceLoaderIml::filterNonEmpty)
- .collect(Collectors.toSet());
- }
-
- private static Set<String> readFromJar(final String path, final URL url) {
- final String uriString = urlToUri(url).toString();
- final String fileReference = extractJarFilePath(uriString);
- try (JarFile jar = new JarFile(new File(fileReference))) {
- return Collections.list(jar.entries())
- .stream()
- .filter(jarEntry -> jarEntry.getName().contains(path))
- .map(jarEntry -> getJarEntryStream(jar, jarEntry))
- .map(ResourceLoaderIml::readJarEntryStream)
- .flatMap(content -> Arrays.stream(content.split(System.lineSeparator())))
- .filter(ResourceLoaderIml::filterNonEmpty)
- .collect(Collectors.toSet());
- } catch (IOException e) {
- throw new IllegalStateException(e);
- }
- }
-
- private static String extractJarFilePath(final String uriString) {
- return uriString.substring(0, uriString.indexOf("!")).replace("jar:file:", "");
- }
-
- private static boolean filterNonEmpty(final String line) {
- return !Strings.isNullOrEmpty(line.trim());
- }
-
- private static String readJarEntryStream(final InputStream inputStream) {
- try {
- final String value = IOUtils.toString(inputStream, StandardCharsets.UTF_8);
- IOUtils.closeQuietly(inputStream);
- return value;
- } catch (IOException e) {
- throw new IllegalStateException(e);
- }
- }
-
- private static InputStream getJarEntryStream(final JarFile jar, final JarEntry jarEntry) {
- try {
- return jar.getInputStream(jarEntry);
- } catch (IOException e) {
- throw new IllegalStateException(format("Unable to get stream for entry %s | jar %s", jar, jarEntry));
- }
- }
-
- private static URI urlToUri(final URL url) {
- try {
- return url.toURI();
- } catch (URISyntaxException e) {
- throw new IllegalStateException(format("Unable to convert URL %s to URI", url));
- }
- }
-
- private static String urlToContentString(final URL url) {
- try {
- return Resources.toString(url, Charsets.UTF_8);
- } catch (IOException e) {
- throw new IllegalArgumentException("Unable to read resource from: " + url, e);
- }
- }
-
- private static URL fileToUrl(final File file) {
- try {
- return file.toURI().toURL();
- } catch (MalformedURLException e) {
- throw new IllegalStateException(e);
- }
- }
- }
-}