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snappy-java
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Merge pull request #23 from jdnarvaez/develop 

OSGi Compatibility
This commit is contained in:
Taro L. Saito 2013-03-19 07:22:22 -07:00
parent 9fc3159878 274f11f73d
commit b83b6a76e2
3 changed files with 95 additions and 15 deletions
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56
pom.xml
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@ -82,7 +82,6 @@
</testResource>
</testResources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
@ -171,9 +170,10 @@
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<version>2.3.4</version>
<version>2.3.7</version>
<extensions>true</extensions>
<configuration>
<manifestLocation>META-INF</manifestLocation>
<instructions>
<Bundle-SymbolicName>${project.groupId}.${project.artifactId}</Bundle-SymbolicName>
<Bundle-Name>${pproject.name}</Bundle-Name>
@ -181,8 +181,56 @@
<Bundle-Activator>org.xerial.snappy.SnappyBundleActivator</Bundle-Activator>
<Export-Package>org.xerial.snappy</Export-Package>
<Import-Package>org.osgi.framework;version="[1.5,2)"</Import-Package>
<Bundle-ActivationPolicy>lazy</Bundle-ActivationPolicy>
<Bundle-NativeCode>
org/xerial/snappy/native/Windows/amd64/snappyjava.dll;selection-filter="(&amp;(osgi.arch=x86_64)(osgi.os=win32))",
org/xerial/snappy/native/Windows/x86/snappyjava.dll;selection-filter="(&amp;(osgi.arch=x86)(osgi.os=win32))",
org/xerial/snappy/native/Mac/i386/libsnappyjava.jnilib;selection-filter="(&amp;(osgi.arch=x86)(osgi.os=macosx))",
org/xerial/snappy/native/Mac/x86_64/libsnappyjava.jnilib;selection-filter="(&amp;(osgi.arch=x86_64)(osgi.os=macosx))",
org/xerial/snappy/native/Linux/amd64/libsnappyjava.so;selection-filter="(&amp;(osgi.arch=x86_64)(osgi.os=linux))",
org/xerial/snappy/native/Linux/i386/libsnappyjava.so;selection-filter="(&amp;(osgi.arch=x86)(osgi.os=linux))",
org/xerial/snappy/native/Linux/arm/libsnappyjava.so;selection-filter="(&amp;(osgi.arch=arm)(osgi.os=linux))"
</Bundle-NativeCode>
<!-- TODO: unsure about ARMHF -->
</instructions>
</configuration>
<executions>
<execution>
<id>bundle-manifest</id>
<phase>process-classes</phase>
<goals>
<goal>manifest</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<index>true</index>
<manifestFile>META-INF/MANIFEST.MF</manifestFile>
</archive>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-clean-plugin</artifactId>
<version>2.4.1</version>
<configuration>
<followSymLinks>false</followSymLinks>
<filesets>
<fileset>
<directory>META-INF</directory>
<includes>
<include>MANIFEST.MF</include>
</includes>
</fileset>
</filesets>
</configuration>
</plugin>
<plugin>
@ -205,6 +253,7 @@
</execution>
</executions>
</plugin>
</plugins>
<extensions>
@ -254,7 +303,6 @@
</profile>
</profiles>
<dependencies>
<dependency>
<groupId>junit</groupId>
@ -285,5 +333,7 @@
<type>jar</type>
<scope>test</scope>
</dependency>
</dependencies>
</project>

22
src/main/java/org/xerial/snappy/SnappyBundleActivator.java
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@ -24,6 +24,9 @@
//--------------------------------------
package org.xerial.snappy;
import java.util.jar.Manifest;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
@ -35,12 +38,23 @@ import org.osgi.framework.BundleContext;
*/
public class SnappyBundleActivator implements BundleActivator
{
public void start(BundleContext context) throws Exception {
/**
* Name of the Snappy native library
*/
public static final String LIBRARY_NAME = "snappyjava";
/**
* Make a call to {@link System#loadLibrary(String)} to load the native library which assumes
* that the library is available on the path based on this {@link Bundle}'s {@link Manifest}.
*/
public void start(BundleContext context) throws Exception
{
System.loadLibrary(System.mapLibraryName(LIBRARY_NAME));
SnappyLoader.setApi(new SnappyNative());
}
public void stop(BundleContext context) throws Exception {
public void stop(BundleContext context) throws Exception
{
SnappyLoader.setApi(null);
}
}

28
src/main/java/org/xerial/snappy/SnappyLoader.java
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@ -24,7 +24,13 @@
//--------------------------------------
package org.xerial.snappy;
import java.io.*;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.URL;
@ -87,8 +93,18 @@ public class SnappyLoader
public static final String KEY_SNAPPY_USE_SYSTEMLIB = "org.xerial.snappy.use.systemlib";
public static final String KEY_SNAPPY_DISABLE_BUNDLED_LIBS = "org.xerial.snappy.disable.bundled.libs"; // Depreciated, but preserved for backward compatibility
private static boolean isLoaded = false;
private static Object api = null;
private static volatile boolean isLoaded = false;
private static volatile Object api = null;
/**
* Set the api instance.
*
* @param nativeCode
*/
static synchronized void setApi(Object nativeCode)
{
api = nativeCode;
}
/**
* load system properties when configuration file of the name
@ -200,8 +216,8 @@ public class SnappyLoader
*
* @return
*/
static synchronized Object load() {
static synchronized Object load()
{
if (api != null)
return api;
@ -216,7 +232,7 @@ public class SnappyLoader
isLoaded = true;
// Look up SnappyNative, injected to the root classloder, using reflection in order to avoid the initialization of SnappyNative class in this context class loader.
Object nativeCode = Class.forName("org.xerial.snappy.SnappyNative").newInstance();
api = nativeCode;
setApi(nativeCode);
}
catch (Exception e) {
e.printStackTrace();