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generate and package jni lib in jar + load lib from jar without assuming it in java.library.path #1

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generate and package jni lib in jar + load lib from jar without assuming it in java.library.path #1

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107 changes: 85 additions & 22 deletions circe-crc32c-sse42/pom.xml
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Expand Up @@ -53,36 +53,99 @@
<groupId>com.github.maven-nar</groupId>
<artifactId>nar-maven-plugin</artifactId>
<extensions>true</extensions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.4.1</version>
<configuration>
<runtime>${nar.runtime}</runtime>
<libraries>
<library>
<type>jni</type>
<narSystemPackage>com.scurrilous.circe.crc</narSystemPackage>
</library>
</libraries>
<cpp>
<optionSet>${nar.cpp.optionSet}</optionSet>
<exceptions>false</exceptions>
<rtti>false</rtti>
<optimize>full</optimize>
</cpp>
<descriptors>
<descriptor>src/main/assembly/assembly.xml</descriptor>
</descriptors>
<appendAssemblyId>false</appendAssemblyId>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>

<profiles>
<profile>
<id>test-direct-access</id>
<dependencies>
<dependency>
<groupId>com.scurrilous</groupId>
<artifactId>circe-direct-access</artifactId>
<version>${project.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<id>mac</id>
<activation>
<os>
<name>Mac OS X</name>
</os>
</activation>
<build>
<plugins>
<plugin>
<groupId>com.github.maven-nar</groupId>
<artifactId>nar-maven-plugin</artifactId>
<version>3.1.0</version>
<extensions>true</extensions>
<configuration>
<runtime>${nar.runtime}</runtime>
<output>circe-crc32c-sse42</output>
<libraries>
<library>
<type>jni</type>
</library>
</libraries>
<cpp>
<optionSet>${nar.cpp.optionSet}</optionSet>
<exceptions>false</exceptions>
<rtti>false</rtti>
<optimize>full</optimize>
</cpp>
</configuration>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>Linux</id>
<activation>
<os>
<name>Linux</name>
</os>
</activation>
<build>
<plugins>
<plugin>
<groupId>com.github.maven-nar</groupId>
<artifactId>nar-maven-plugin</artifactId>
<version>3.1.0</version>
<extensions>true</extensions>
<configuration>
<runtime>${nar.runtime}</runtime>
<output>circe-crc32c-sse42</output>
<libraries>
<library>
<type>jni</type>
</library>
</libraries>
<cpp>
<optionSet>${nar.cpp.optionSet}</optionSet>
<exceptions>false</exceptions>
<rtti>false</rtti>
<optimize>full</optimize>
</cpp>
<linker>
<libSet>rt</libSet>
</linker>
</configuration>
</plugin>
</plugins>
</build>
</profile>
</profiles>
</project>
51 changes: 51 additions & 0 deletions circe-crc32c-sse42/src/main/assembly/assembly.xml
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@@ -0,0 +1,51 @@
<?xml version="1.0" encoding="UTF-8"?>

<assembly>
<id>all</id>
<formats>
<format>jar</format>
</formats>

<includeBaseDirectory>false</includeBaseDirectory>
<dependencySets>
<dependencySet>
<excludes>
<exclude>com.scurrilous</exclude>
<exclude>*:nar:*</exclude>
</excludes>
</dependencySet>
</dependencySets>
<fileSets>
<fileSet>
<directory>${project.build.directory}/nar/${project.artifactId}-${project.version}-${os.arch}-MacOSX-gpp-jni/lib/${os.arch}-MacOSX-gpp/jni
</directory>
<outputDirectory>lib</outputDirectory>
<includes>
<include>lib*</include>
</includes>
</fileSet>
<fileSet>
<directory>${project.build.directory}/nar/${project.artifactId}-${project.version}-${os.arch}-Linux-gpp-jni/lib/${os.arch}-Linux-gpp/jni
</directory>
<outputDirectory>lib</outputDirectory>
<includes>
<include>lib*</include>
</includes>
</fileSet>
<fileSet>
<directory>${project.build.directory}/nar/${project.artifactId}-${project.version}-${os.arch}-${os.name}-gpp-jni/lib/${os.arch}-${os.name}-gpp/jni
</directory>
<outputDirectory>lib</outputDirectory>
<includes>
<include>lib*</include>
</includes>
</fileSet>
<fileSet>
<directory>${project.build.directory}/classes</directory>
<outputDirectory></outputDirectory>
<includes>
<include>**/*</include>
</includes>
</fileSet>
</fileSets>
</assembly>
90 changes: 90 additions & 0 deletions circe-crc32c-sse42/src/main/java/com/scurrilous/circe/crc/LibraryUtils.java
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@@ -0,0 +1,90 @@
package com.scurrilous.circe.crc;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Locale;

/**
* provides utility to load libraries at runtime.
*
*/
public class LibraryUtils {

public static final String OS_NAME = System.getProperty("os.name").toLowerCase(Locale.US);

/**
* loads given library from the this jar. ie: this jar contains:
* /lib/libcirce-crc32c-sse42.jnilib
*
* @param path
* : absolute path of the library in the jar <br/>
* if this jar contains: /lib/libcirce-crc32c-sse42.jnilib then
* provide the same absolute path as input
* @throws Exception
*/
public static void loadLibraryFromJar(String path) throws Exception {

if (!path.startsWith("/")) {
throw new IllegalArgumentException("absolute path must start with /");
}

String[] parts = path.split("/");
String filename = (parts.length > 0) ? parts[parts.length - 1] : null;

File dir = File.createTempFile("native", "");
dir.delete();
if (!(dir.mkdir())) {
throw new IOException("Failed to create temp directory " + dir.getAbsolutePath());
}
dir.deleteOnExit();
File temp = new File(dir, filename);
temp.deleteOnExit();

byte[] buffer = new byte[1024];
int read;

InputStream input = LibraryUtils.class.getResourceAsStream(path);
if (input == null) {
throw new FileNotFoundException("Couldn't find file into jar " + path);
}

OutputStream out = new FileOutputStream(temp);
try {
while ((read = input.read(buffer)) != -1) {
out.write(buffer, 0, read);
}
} finally {
out.close();
input.close();
}

if (!temp.exists()) {
throw new FileNotFoundException("Failed to copy file from jar at " + temp.getAbsolutePath());
}

System.load(temp.getAbsolutePath());
}

/**
* Returns jni library extension based on OS specification. Maven-nar
* generates jni library based on different OS :
* http://mark.donszelmann.org/maven-nar-plugin/aol.html (jni.extension)
*
* @return library type based on operating system
*/
public static String libType() {

if (OS_NAME.indexOf("mac") >= 0) {
return "jnilib";
} else if (OS_NAME.indexOf("nix") >= 0 || OS_NAME.indexOf("nux") >= 0 || OS_NAME.indexOf("aix") > 0) {
return "so";
} else if (OS_NAME.indexOf("win") >= 0) {
return "dll";
}
throw new TypeNotPresentException(OS_NAME + " not supported", null);
}
}
3 changes: 2 additions & 1 deletion circe-crc32c-sse42/src/main/java/com/scurrilous/circe/crc/Sse42Crc32C.java
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Expand Up @@ -20,6 +20,7 @@
import com.scurrilous.circe.IncrementalIntHash;
import com.scurrilous.circe.impl.AbstractIncrementalIntHash;
import com.scurrilous.circe.params.CrcParameters;
import static com.scurrilous.circe.crc.LibraryUtils.*;

/**
* Implementation of CRC-32C using the SSE 4.2 CRC instruction.
Expand All @@ -30,7 +31,7 @@ public final class Sse42Crc32C extends AbstractIncrementalIntHash implements Inc

private static boolean checkSupported() {
try {
NarSystem.loadLibrary();
loadLibraryFromJar("/lib/libcirce-crc32c-sse42." + libType());
return nativeSupported();
} catch (final Exception | UnsatisfiedLinkError e) {
return false;
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