Github user jelmerk commented on a diff in the pull request:
https://github.com/apache/flink/pull/5296#discussion_r164158160
--- Diff:
flink-filesystems/flink-openstack-fs-hadoop/src/main/java/org/apache/flink/fs/openstackhadoop/SwiftFileSystemFactory.java
---
@@ -0,0 +1,132 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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 org.apache.flink.fs.openstackhadoop;
+
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.core.fs.FileSystem;
+import org.apache.flink.core.fs.FileSystemFactory;
+import org.apache.flink.runtime.fs.hdfs.HadoopFileSystem;
+import org.apache.flink.runtime.util.HadoopUtils;
+
+import org.apache.hadoop.fs.swift.snative.SwiftNativeFileSystem;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.net.URI;
+
+/**
+ * Simple factory for the Swift file system.
+ */
+public class SwiftFileSystemFactory implements FileSystemFactory {
+
+ private static final Logger LOG =
LoggerFactory.getLogger(SwiftFileSystemFactory.class);
+
+ /** The prefixes that Flink adds to the Hadoop config under
'fs.swift.'. */
+ private static final String CONFIG_PREFIX = "swift.";
+
+ /** Flink's configuration object. */
+ private Configuration flinkConfig;
+
+ /** Hadoop's configuration for the file systems, lazily initialized. */
+ private org.apache.hadoop.conf.Configuration hadoopConfig;
+
+ @Override
+ public String getScheme() {
+ return "swift";
+ }
+
+ @Override
+ public void configure(Configuration config) {
+ flinkConfig = config;
+ hadoopConfig = null;
+ }
+
+ @Override
+ public FileSystem create(URI fsUri) throws IOException {
+ LOG.debug("Creating swift file system (backed by a Hadoop
native swift file system)");
+
+ try {
+ // -- (1) get the loaded Hadoop config (or fall back to
one loaded from the classpath)
+
+ org.apache.hadoop.conf.Configuration hadoopConfig =
this.hadoopConfig;
+ if (hadoopConfig == null) {
+ if (flinkConfig != null) {
+ LOG.debug("Loading Hadoop configuration
for swift native file system");
+ hadoopConfig =
HadoopUtils.getHadoopConfiguration(flinkConfig);
+
+ // hadoop.tmp.dir needs to be defined
because it is used as buffer directory
+ if (hadoopConfig.get("hadoop.tmp.dir")
== null) {
+ String tmpDir =
System.getProperty("java.io.tmpdir") + "/" + "hadoop-" +
System.getProperty("user.name");
+
hadoopConfig.set("hadoop.tmp.dir", tmpDir);
+ }
+
+ // add additional config entries from
the Flink config to the Presto Hadoop config
+ for (String key : flinkConfig.keySet())
{
+ if
(key.startsWith(CONFIG_PREFIX)) {
+ String value =
flinkConfig.getString(key, null);
+ String newKey =
"fs.swift." + key.substring(CONFIG_PREFIX.length());
+
hadoopConfig.set(newKey, flinkConfig.getString(key, null));
--- End diff --
Changed in 718ac46f45bc0b1a275f301255c52cec7ecdd209
---
