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Merge pull request #1090 from mziccard/add-nio-support
Add Google Cloud Storage NIO Alpha support
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gcloud-java-bigquery/src/main/java/com/google/cloud/bigquery/BigQueryError.java
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gcloud-java-bigquery/src/main/java/com/google/cloud/bigquery/JobStatistics.java
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gcloud-java-bigquery/src/main/java/com/google/cloud/bigquery/JobStatus.java
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gcloud-java-bigquery/src/main/java/com/google/cloud/bigquery/UserDefinedFunction.java
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gcloud-java-bigquery/src/test/java/com/google/cloud/bigquery/BigQueryErrorTest.java
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| Original file line number | Diff line number | Diff line change |
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| Example of adding the Google Cloud Storage NIO Provider to a legacy jar | ||
| ======================================================================= | ||
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| This project shows how to add Google Cloud Storage capabilities to a jar file for a Java 7 | ||
| application that uses Java NIO without the need to recompile. | ||
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| Note that whenever possible, you instead want to recompile the app and use the normal | ||
| dependency mechanism to add a dependency to gcloud-java-nio. You can see examples of | ||
| this in the [gcloud-java-examples](../../gcloud-java-examples) project. | ||
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| To run this example: | ||
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| 1. Before running the example, go to the [Google Developers Console][developers-console] to ensure that Google Cloud Storage API is enabled. | ||
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| 2. Log in using gcloud SDK (`gcloud auth login` in command line) | ||
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| 3. Compile the JAR with: | ||
| ``` | ||
| mvn package -DskipTests -Dmaven.javadoc.skip=true -Dmaven.source.skip=true | ||
| ``` | ||
| 4. Run the sample with: | ||
| ``` | ||
| java -cp gcloud-java-contrib/gcloud-java-nio/target/gcloud-java-nio-0.2.5-SNAPSHOT-shaded.jar:gcloud-java-contrib/gcloud-java-nio-examples/target/gcloud-java-nio-examples-0.2.5-SNAPSHOT.jar com.google.cloud.nio.examples.ListFilesystems | ||
| ``` | ||
| Notice that it lists Google Cloud Storage, which it wouldn't if you ran it without the NIO jar: | ||
| ``` | ||
| java -cp gcloud-java-contrib/gcloud-java-nio-examples/target/gcloud-java-nio-examples-0.2.5-SNAPSHOT.jar com.google.cloud.nio.examples.ListFilesystems | ||
| ``` | ||
| The sample doesn't have anything about Google Cloud Storage in it. It gets that ability from the NIO | ||
| jar that we're adding to the classpath. You can use the NIO "fat shaded" jar for this purpose as it | ||
| also includes the dependencies for gcloud-java-nio. | ||
| The underlying mechanism is Java's standard [ServiceLoader](https://docs.oracle.com/javase/7/docs/api/java/util/ServiceLoader.html) | ||
| facility, the [standard way](http://docs.oracle.com/javase/7/docs/technotes/guides/io/fsp/filesystemprovider.html) to plug in NIO providers like this one. | ||
| If you have access to a project's source code you can also simply add gcloud-java-nio as | ||
| a dependency and let Maven pull in the required dependencies (this is what the NIO unit tests do). | ||
| This approach is preferable as the fat jar approach may waste memory on multiple copies of | ||
| dependencies. | ||
| [developers-console]:https://console.developers.google.com/ |
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| <?xml version="1.0"?> | ||
| <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> | ||
| <modelVersion>4.0.0</modelVersion> | ||
| <artifactId>gcloud-java-nio-examples</artifactId> | ||
| <packaging>jar</packaging> | ||
| <name>GCloud Java NIO examples</name> | ||
| <url>https://github.com/GoogleCloudPlatform/gcloud-java/tree/master/gcloud-java-contrib/gcloud-java-nio-examples</url> | ||
| <description> | ||
| Demonstrates how to use the gcloud-java-nio jar to add Google Cloud Storage functionality to legacy code. | ||
| </description> | ||
| <parent> | ||
| <groupId>com.google.cloud</groupId> | ||
| <artifactId>gcloud-java-contrib</artifactId> | ||
| <version>0.2.5-SNAPSHOT</version> | ||
| </parent> | ||
| <properties> | ||
| <site.installationModule>nio</site.installationModule> | ||
| </properties> | ||
| <dependencies> | ||
| <dependency> | ||
| <groupId>${project.groupId}</groupId> | ||
| <artifactId>gcloud-java-storage</artifactId> | ||
| <version>${project.version}</version> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>com.google.guava</groupId> | ||
| <artifactId>guava</artifactId> | ||
| <version>19.0</version> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>com.google.code.findbugs</groupId> | ||
| <artifactId>jsr305</artifactId> | ||
| <version>2.0.1</version> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>javax.inject</groupId> | ||
| <artifactId>javax.inject</artifactId> | ||
| <version>1</version> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>com.google.auto.service</groupId> | ||
| <artifactId>auto-service</artifactId> | ||
| <version>1.0-rc2</version> | ||
| <scope>provided</scope> <!-- to leave out of the all-deps jar --> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>com.google.auto.value</groupId> | ||
| <artifactId>auto-value</artifactId> | ||
| <version>1.1</version> | ||
| <scope>provided</scope> <!-- to leave out of the all-deps jar --> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>junit</groupId> | ||
| <artifactId>junit</artifactId> | ||
| <version>4.12</version> | ||
| <scope>test</scope> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>com.google.guava</groupId> | ||
| <artifactId>guava-testlib</artifactId> | ||
| <version>19.0</version> | ||
| <scope>test</scope> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>com.google.truth</groupId> | ||
| <artifactId>truth</artifactId> | ||
| <version>0.27</version> | ||
| <scope>test</scope> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>org.mockito</groupId> | ||
| <artifactId>mockito-core</artifactId> | ||
| <version>1.9.5</version> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>org.apache.maven.plugins</groupId> | ||
| <artifactId>maven-assembly-plugin</artifactId> | ||
| <version>2.5.4</version> | ||
| </dependency> | ||
| </dependencies> | ||
| <build> | ||
| <plugins> | ||
| <plugin> | ||
| <groupId>org.codehaus.mojo</groupId> | ||
| <artifactId>exec-maven-plugin</artifactId> | ||
| <configuration> | ||
| <skip>false</skip> | ||
| </configuration> | ||
| </plugin> | ||
| </plugins> | ||
| </build> | ||
| </project> |
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...gcloud-java-nio-examples/src/main/java/com/google/cloud/nio/examples/ListFilesystems.java
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| /* | ||
| * Copyright 2015 Google Inc. All Rights Reserved. | ||
| * | ||
| * 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. | ||
| */ | ||
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| package com.google.cloud.nio.examples; | ||
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| import java.io.IOException; | ||
| import java.net.URI; | ||
| import java.nio.file.FileSystem; | ||
| import java.nio.file.FileSystems; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Path; | ||
| import java.nio.file.Paths; | ||
| import java.nio.file.spi.FileSystemProvider; | ||
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| /** | ||
| * ListFilesystems is a super-simple program that lists the available NIO filesystems. | ||
| */ | ||
| public class ListFilesystems { | ||
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| /** | ||
| * See the class documentation. | ||
| */ | ||
| public static void main(String[] args) throws IOException { | ||
| listFilesystems(); | ||
| } | ||
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| private static void listFilesystems() { | ||
| System.out.println("Installed filesystem providers:"); | ||
| for (FileSystemProvider p : FileSystemProvider.installedProviders()) { | ||
| System.out.println(" " + p.getScheme()); | ||
| } | ||
| } | ||
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| } |
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