protoc-jar

Protocol Buffers protobuf compiler - multi-platform executable protoc JAR and API. Available on Maven Central: http://central.maven.org/maven2/com/github/os72/protoc-jar/3.5.1.1/

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Simple convenience JAR that embeds protoc compiler binaries for Linux, Mac/OSX, and Windows, providing some portability across the major platforms. At runtime the library detects the platform and executes the corresponding protoc binary. Supports protoc versions 2.4.1, 2.5.0, 2.6.1, 3.5.1. Also supports downloading protoc from maven central

• New: Support for Linux on POWER8 platform (linux-ppcle_64), thanks to Apache SystemML folks (nakul02)
• New: Support for FreeBSD on x86 platform (freebsd-x86_64), thanks kjopek
• New: Support for Linux on ARM platform (linux-aarch_64; 2.4.1, 2.6.1, 3.4.0), thanks garciagorka

See also

• https://github.com/os72/protoc-jar-maven-plugin
• https://github.com/os72/protobuf-java-shaded-241
• https://github.com/os72/protobuf-java-shaded-250
• https://github.com/os72/protobuf-java-shaded-261
• https://github.com/os72/protobuf-java-shaded-351
• https://github.com/google/protobuf

Binaries

• http://central.maven.org/maven2/com/google/protobuf/protoc/
• http://central.maven.org/maven2/com/github/os72/protoc/
• https://oss.sonatype.org/content/repositories/snapshots/com/github/os72/protoc/

Version support

• protobuf 2.4.1: -v2.4.1, -v241
• protobuf 2.5.0: -v2.5.0, -v250
• protobuf 2.6.1: -v2.6.1, -v261
• protobuf 3.5.1: -v3.5.1, -v351
• download by maven artifact id: -v:<group>:<artifact>:<version> (eg, -v:com.google.protobuf:protoc:3.0.0)

Usage - executable

$ java -jar protoc-jar-3.5.1.1.jar -v2.4.1 --version
protoc-jar: protoc version: 2.4.1, detected platform: windows-x86_64 (windows 8.1/amd64)
protoc-jar: embedded: bin/2.4.1/protoc-2.4.1-windows-x86_64.exe
protoc-jar: executing: [C:\cygwin64\tmp\protocjar4043021753132417014\bin\protoc.exe, --version]
libprotoc 2.4.1

$ java -jar protoc-jar-3.5.1.1.jar -v2.5.0 --version
protoc-jar: protoc version: 2.5.0, detected platform: windows-x86_64 (windows 8.1/amd64)
protoc-jar: embedded: bin/2.5.0/protoc-2.5.0-windows-x86_64.exe
protoc-jar: executing: [C:\cygwin64\tmp\protocjar1249962506895049512\bin\protoc.exe, --version]
libprotoc 2.5.0

$ java -jar protoc-jar-3.5.1.1.jar -v2.6.1 --version
protoc-jar: protoc version: 2.6.1, detected platform: windows-x86_64 (windows 8.1/amd64)
protoc-jar: embedded: bin/2.6.1/protoc-2.6.1-windows-x86_64.exe
protoc-jar: executing: [C:\cygwin64\tmp\protocjar6776927966028536935\bin\protoc.exe, --version]
libprotoc 2.6.1

$ java -jar protoc-jar-3.5.1.1.jar -v3.5.1 --version
protoc-jar: protoc version: 3.5.1, detected platform: windows-x86_64 (windows 8.1/amd64)
protoc-jar: embedded: bin/3.5.1/protoc-3.5.1-windows-x86_64.exe
protoc-jar: executing: [C:\cygwin64\tmp\protocjar6721276946617095290\bin\protoc.exe, --version]
libprotoc 3.5.1

$ java -jar protoc-jar-3.5.1.1.jar -v3.1.0 --version
protoc-jar: protoc version: 3.1.0, detected platform: windows-x86_64 (windows 8.1/amd64)
protoc-jar: downloading: http://central.maven.org/maven2/com/google/protobuf/protoc/maven-metadata.xml
protoc-jar: saved: C:\cygwin64\tmp\protocjar.webcache\com\google\protobuf\protoc\maven-metadata.xml
protoc-jar: downloading: http://central.maven.org/maven2/com/github/os72/protoc/maven-metadata.xml
protoc-jar: saved: C:\cygwin64\tmp\protocjar.webcache\com\github\os72\protoc\maven-metadata.xml
protoc-jar: cached: C:\cygwin64\tmp\protocjar.webcache\com\google\protobuf\protoc\maven-metadata.xml
protoc-jar: downloading: http://central.maven.org/maven2/com/google/protobuf/protoc/3.1.0-build2/protoc-3.1.0-build2-windows-x86_64.exe
protoc-jar: saved: C:\cygwin64\tmp\protocjar.webcache\com\google\protobuf\protoc\3.1.0-build2\protoc-3.1.0-build2-windows-x86_64.exe
protoc-jar: executing: [C:\cygwin64\tmp\protocjar1755669222845599671\bin\protoc.exe, --version]
libprotoc 3.1.0

Usage - executable, include google.protobuf standard types (option --include_std_types)

$ java -jar protoc-jar-3.5.1.1.jar --include_std_types -I. --java_out=out StdTypeExample.proto
protoc-jar: protoc version: 3.5.1, detected platform: windows-x86_64 (windows 8.1/amd64)
protoc-jar: embedded: bin/3.5.1/protoc-3.5.1-windows-x86_64.exe
protoc-jar: executing: [C:\cygwin64\tmp\protocjar4162580735258750520\bin\protoc.exe, -IC:\cygwin64\tmp\protocjar4162580735258750520\include, -I., --java_out=out, StdTypeExample.proto]

Usage - executable, apply shading for use with protobuf-java-shaded-241 (option --java_shaded_out)

$ java -jar protoc-jar-3.5.1.1.jar -v2.4.1 --java_shaded_out=out PersonSchema.proto
protoc-jar: protoc version: 2.4.1, detected platform: windows-x86_64 (windows 8.1/amd64)
protoc-jar: embedded: bin/2.4.1/protoc-2.4.1-windows-x86_64.exe
protoc-jar: executing: [C:\cygwin64\tmp\protocjar139806143399660474\bin\protoc.exe, --java_out=out, PersonSchema.proto]
protoc-jar: shading (version 2.4.1): out

Usage - run platform detector (option -pp, print platform, usually for debugging)

$ java -jar protoc-jar-3.5.1.1.jar -pp
------------------------------------------------------------------------
Detecting the operating system and CPU architecture
------------------------------------------------------------------------
os.detected.name: windows
os.detected.arch: x86_64
os.detected.version: 6.3
os.detected.version.major: 6
os.detected.version.minor: 3
os.detected.classifier: windows-x86_64

Usage - API

import com.github.os72.protocjar.Protoc;
...
String[] args = {"-v2.4.1", "--help"};
Protoc.runProtoc(args);

Maven dependency

<dependency>
  <groupId>com.github.os72</groupId>
  <artifactId>protoc-jar</artifactId>
  <version>3.5.1.1</version>
</dependency>