Re-organize Scala maven build (apache#13626)

* Re-organize scala maven build

1. Automatically detect which platform to build for scala.
2. Remove platform dependend submodules
3. Fix cyclic module dependencies
4. Fix scalatype style check
5. Now mvn can be executed in submodule
6. Maven build can be executed from any directory not only in root project
7. Checkin javah header file, and use verify task to detect native API changes
8. Improve incremental build performance
9. Remove unittest and integration-test profile, use proper task instead
10. Delete generated scala file during maven clean.

* Redo maven deploy related tasks.

1. Removed maven release plugin.
2. Make maven build friendly to CI, allow cli override version.
3. Moved gpg signing to deploy stage.
4. Created a separeated deploy module.
5. Updated Makefile to new maven build change.
6. Remove unused nexus-staging-plugin
7. Added nightly and staging profile for CI.

* Support mkldnn for Scala.

Makefile

@@ -18,8 +18,6 @@
 ROOTDIR = $(CURDIR)
 TPARTYDIR = $(ROOTDIR)/3rdparty
 
-SCALA_VERSION_PROFILE := scala-2.11
-
 ifeq ($(OS),Windows_NT)
 	UNAME_S := Windows
 else
@@ -408,18 +406,13 @@ PLUGIN_OBJ =
 PLUGIN_CUOBJ =
 include $(MXNET_PLUGINS)
 
-ifeq ($(UNAME_S), Windows)
-	# TODO(yizhi) currently scala package does not support windows
-	SCALA_PKG_PROFILE := windows
-else
+ifneq ($(UNAME_S), Windows)
 	ifeq ($(UNAME_S), Darwin)
 		WHOLE_ARCH= -all_load
 		NO_WHOLE_ARCH= -noall_load
-		SCALA_PKG_PROFILE := osx-x86_64
 	else
 		WHOLE_ARCH= --whole-archive
 		NO_WHOLE_ARCH= --no-whole-archive
-		SCALA_PKG_PROFILE := linux-x86_64
 	endif
 endif
 
@@ -438,7 +431,6 @@ ifeq ($(USE_CUDA), 1)
 	# Make sure to add stubs as fallback in order to be able to build
 	# without full CUDA install (especially if run without nvidia-docker)
 	LDFLAGS += -L/usr/local/cuda/lib64/stubs
-	SCALA_PKG_PROFILE := $(SCALA_PKG_PROFILE)-gpu
 	ifeq ($(USE_NCCL), 1)
 		ifneq ($(USE_NCCL_PATH), NONE)
 			CFLAGS += -I$(USE_NCCL_PATH)/include
@@ -450,7 +442,6 @@ ifeq ($(USE_CUDA), 1)
 		CFLAGS += -DMXNET_USE_NCCL=0
 	endif
 else
-	SCALA_PKG_PROFILE := $(SCALA_PKG_PROFILE)-cpu
 	CFLAGS += -DMXNET_USE_NCCL=0
 endif
 
@@ -620,80 +611,22 @@ rpkgtest:
 	Rscript -e 'res<-covr:::package_coverage("R-package");fileConn<-file(paste("r-package_coverage_",toString(runif(1)),".json"));writeLines(covr:::to_codecov(res), fileConn);close(fileConn)'
 
 scalaclean:
-	(cd $(ROOTDIR)/scala-package && \
-		mvn clean -P$(SCALA_PKG_PROFILE),$(SCALA_VERSION_PROFILE))
-
-scalatestcompile:
-	(cd $(ROOTDIR)/scala-package && \
-		mvn test-compile -P$(SCALA_PKG_PROFILE),$(SCALA_VERSION_PROFILE) -Dcxx="$(CXX)" \
-		    -Dbuild.platform="$(SCALA_PKG_PROFILE)" \
-			-Dcflags="$(CFLAGS)" -Dldflags="$(LDFLAGS)" \
-			-Dcurrent_libdir="$(ROOTDIR)/lib" \
-			-Dlddeps="$(LIB_DEP) $(ROOTDIR)/lib/libmxnet.a")
+	(cd $(ROOTDIR)/scala-package && mvn clean)
 
 scalapkg:
-	(cd $(ROOTDIR)/scala-package && \
-		mvn package $(MAVEN_ARGS) -P$(SCALA_PKG_PROFILE),$(SCALA_VERSION_PROFILE) -Dcxx="$(CXX)" \
-		    -Dbuild.platform="$(SCALA_PKG_PROFILE)" \
-			-Dcflags="$(CFLAGS)" -Dldflags="$(LDFLAGS)" \
-			-Dcurrent_libdir="$(ROOTDIR)/lib" \
-			-Dlddeps="$(LIB_DEP) $(ROOTDIR)/lib/libmxnet.a")
+	(cd $(ROOTDIR)/scala-package && mvn install -DskipTests)
+
+scalainstall:
+	(cd $(ROOTDIR)/scala-package && mvn install)
 
 scalaunittest:
-	(cd $(ROOTDIR)/scala-package && \
-		mvn integration-test $(MAVEN_ARGS) -P$(SCALA_PKG_PROFILE),$(SCALA_VERSION_PROFILE),unittest -Dcxx="$(CXX)" \
-			-Dcflags="$(CFLAGS)" -Dldflags="$(LDFLAGS)" \
-			-Dlddeps="$(LIB_DEP) $(ROOTDIR)/lib/libmxnet.a" $(SCALA_TEST_ARGS))
+	(cd $(ROOTDIR)/scala-package && mvn install)
 
 scalaintegrationtest:
-	(cd $(ROOTDIR)/scala-package && \
-		mvn integration-test $(MAVEN_ARGS) -P$(SCALA_PKG_PROFILE),$(SCALA_VERSION_PROFILE),integrationtest -Dcxx="$(CXX)" \
-			-Dcflags="$(CFLAGS)" -Dldflags="$(LDFLAGS)" \
-			-Dlddeps="$(LIB_DEP) $(ROOTDIR)/lib/libmxnet.a" $(SCALA_TEST_ARGS))
-
-scalainstall:
-	(cd $(ROOTDIR)/scala-package && \
-		mvn install $(MAVEN_ARGS) -P$(SCALA_PKG_PROFILE),$(SCALA_VERSION_PROFILE) -DskipTests=true -Dcxx="$(CXX)" \
-		    -Dbuild.platform="$(SCALA_PKG_PROFILE)" \
-			-Dcflags="$(CFLAGS)" -Dldflags="$(LDFLAGS)" \
-			-Dlddeps="$(LIB_DEP) $(ROOTDIR)/lib/libmxnet.a")
-
-scalarelease-dryrun:
-	(cd $(ROOTDIR)/scala-package && \
-		mvn release:clean release:prepare -DdryRun=true -DautoVersionSubmodules=true \
-		-Papache-release,$(SCALA_PKG_PROFILE),$(SCALA_VERSION_PROFILE) \
-		-Darguments=""-Dbuild\.platform=\""$(SCALA_PKG_PROFILE)\""\ -DskipTests=true\ -Dcflags=\""$(CFLAGS)\""\ -Dcxx=\""$(CXX)\""\ -Dldflags=\""$(LDFLAGS)\""\ -Dlddeps=\""$(LIB_DEP) $(ROOTDIR)/lib/libmxnet.a\"""")
-
-scalarelease-prepare:
-	(cd $(ROOTDIR)/scala-package && \
-		mvn release:clean release:prepare -DautoVersionSubmodules=true \
-		-Papache-release,$(SCALA_PKG_PROFILE),$(SCALA_VERSION_PROFILE) \
-		-Darguments=""-Dbuild\.platform=\""$(SCALA_PKG_PROFILE)\""\ -DskipTests=true\ -Dcflags=\""$(CFLAGS)\""\ -Dcxx=\""$(CXX)\""\ -Dldflags=\""$(LDFLAGS)\""\ -Dlddeps=\""$(LIB_DEP) $(ROOTDIR)/lib/libmxnet.a\"""")
-
-scalarelease-perform:
-	(cd $(ROOTDIR)/scala-package && \
-		mvn release:perform -DautoVersionSubmodules=true \
-		-Papache-release,$(SCALA_PKG_PROFILE),$(SCALA_VERSION_PROFILE) \
-		-Darguments=""-Dbuild\.platform=\""$(SCALA_PKG_PROFILE)\""\ -DskipTests=true\ -Dcflags=\""$(CFLAGS)\""\ -Dcxx=\""$(CXX)\""\ -Dldflags=\""$(LDFLAGS)\""\ -Dlddeps=\""$(LIB_DEP) $(ROOTDIR)/lib/libmxnet.a\"""")
-
-scaladeploy:
-	(cd $(ROOTDIR)/scala-package && \
-		mvn deploy $(MAVEN_ARGS) -Papache-release,$(SCALA_PKG_PROFILE),$(SCALA_VERSION_PROFILE) \-DskipTests=true -Dcxx="$(CXX)" \
-		    -Dbuild.platform="$(SCALA_PKG_PROFILE)" \
-			-Dcflags="$(CFLAGS)" -Dldflags="$(LDFLAGS)" \
-			-Dlddeps="$(LIB_DEP) $(ROOTDIR)/lib/libmxnet.a")
-
-scaladeploylocal:
-	(cd $(ROOTDIR)/scala-package && \
-		mvn deploy $(MAVEN_ARGS) -Papache-release,deployLocal,$(SCALA_PKG_PROFILE),$(SCALA_VERSION_PROFILE) \-DskipTests=true -Dcxx="$(CXX)" \
-		  -DaltDeploymentRepository=snapshot-repo::default::file:local-snapshot \
-		  -Dgpg.skip \
-		  -Dbuild.platform="$(SCALA_PKG_PROFILE)" \
-			-Dcflags="$(CFLAGS)" -Dldflags="$(LDFLAGS)" \
-			-Dlddeps="$(LIB_DEP) $(ROOTDIR)/lib/libmxnet.a")
+	(cd $(ROOTDIR)/scala-package && mvn integration-test -DskipTests=false)
 
 jnilint:
-	3rdparty/dmlc-core/scripts/lint.py mxnet-jnicpp cpp scala-package/native/src
+	3rdparty/dmlc-core/scripts/lint.py mxnet-jnicpp cpp scala-package/native/src --exclude_path scala-package/native/src/main/native/org_apache_mxnet_native_c_api.h
 
 rclean:
 	$(RM) -r R-package/src/image_recordio.h R-package/NAMESPACE R-package/man R-package/R/mxnet_generated.R \

contrib/clojure-package/project.clj

@@ -29,7 +29,7 @@
                  ;[org.apache.mxnet/mxnet-full_2.11-linux-x86_64-gpu "1.2.1"]
 
                  ;;; CI
-                 [org.apache.mxnet/mxnet-full_2.11-linux-x86_64-cpu "1.5.0-SNAPSHOT"]
+                 [org.apache.mxnet/mxnet-full_2.11 "INTERNAL"]
 
                  [org.clojure/tools.logging "0.4.0"]
                  [org.apache.logging.log4j/log4j-core "2.8.1"]

docs/mxdoc.py

@@ -113,9 +113,9 @@ def build_scala_docs(app):
     scala_doc_sources = 'find . -type f -name "*.scala" | egrep \"\.\/core|\.\/infer\" | egrep -v \"\/javaapi\"  | egrep -v \"Suite\"'
     scala_doc_classpath = ':'.join([
         '`find native -name "*.jar" | grep "target/lib/" | tr "\\n" ":" `',
-        '`find macros -name "*-SNAPSHOT.jar" | tr "\\n" ":" `',
-        '`find core -name "*-SNAPSHOT.jar" | tr "\\n" ":" `',
-        '`find infer -name "*-SNAPSHOT.jar" | tr "\\n" ":" `'
+        '`find macros -name "*-INTERNAL.jar" | tr "\\n" ":" `',
+        '`find core -name "*-INTERNAL.jar" | tr "\\n" ":" `',
+        '`find infer -name "*-INTERNAL.jar" | tr "\\n" ":" `'
     ])
     # There are unresolvable errors on mxnet 1.2.x. We are ignoring those errors while aborting the ci on newer versions
     scala_ignore_errors = '; exit 0' if '1.2.' in _BUILD_VER else ''
@@ -135,9 +135,9 @@ def build_java_docs(app):
     java_doc_sources = 'find . -type f -name "*.scala" | egrep \"\.\/core|\.\/infer\" | egrep \"\/javaapi\" | egrep -v \"Suite\"'
     java_doc_classpath = ':'.join([
         '`find native -name "*.jar" | grep "target/lib/" | tr "\\n" ":" `',
-        '`find macros -name "*-SNAPSHOT.jar" | tr "\\n" ":" `',
-        '`find core -name "*-SNAPSHOT.jar" | tr "\\n" ":" `',
-        '`find infer -name "*-SNAPSHOT.jar" | tr "\\n" ":" `'
+        '`find macros -name "*-INTERNAL.jar" | tr "\\n" ":" `',
+        '`find core -name "*-INTERNAL.jar" | tr "\\n" ":" `',
+        '`find infer -name "*-INTERNAL.jar" | tr "\\n" ":" `'
     ])
     _run_cmd('cd {}; scaladoc `{}` -classpath {} -feature -deprecation'
              .format(java_path, java_doc_sources, java_doc_classpath))

scala-package/.gitignore

@@ -1,10 +1,10 @@
 .flattened-pom.xml
 core/src/main/scala/org/apache/mxnet/NDArrayAPIBase.scala
 core/src/main/scala/org/apache/mxnet/NDArrayBase.scala
+core/src/main/scala/org/apache/mxnet/NDArrayRandomAPIBase.scala
 core/src/main/scala/org/apache/mxnet/javaapi/NDArrayBase.scala
 core/src/main/scala/org/apache/mxnet/SymbolAPIBase.scala
 core/src/main/scala/org/apache/mxnet/SymbolBase.scala
-core/src/main/scala/org/apache/mxnet/NDArrayRandomAPIBase.scala
 core/src/main/scala/org/apache/mxnet/SymbolRandomAPIBase.scala
 examples/scripts/infer/images/
 examples/scripts/infer/models/

scala-package/README.md

@@ -10,7 +10,7 @@ The MXNet Scala/Java Package brings flexible and efficient GPU/CPU computing and
 - The Scala/Java Inferece APIs provides an easy out of the box solution for loading pre-trained MXNet models and running inference on them.
 
 Pre-Built Maven Packages
-------------
+------------------------
 
 ### Stable ###
 
@@ -114,30 +114,51 @@ Also, add the dependency which corresponds to your platform to the ```dependenci
 **Note:** ```<version>[1.5.0,)<\version>``` indicates that we will fetch packages with version 1.5.0 or higher. This will always ensure that the pom.xml is able to fetch the latest and greatest jar files from Maven Snapshot repository.
 
 Build From Source
-------------
+-----------------
 
-Checkout the [Installation Guide](http://mxnet.incubator.apache.org/install/index.html) contains instructions to install mxnet package and build it from source.
-If you have built MXNet from source and are looking to setup Scala from that point, you may simply run the following from the MXNet source root:
+Checkout the [Installation Guide](http://mxnet.incubator.apache.org/install/index.html) contains instructions to install mxnet package and build it from source. Scala maven build assume you already have a ``lib/libmxnet.so`` file.
+If you have built MXNet from source and are looking to setup Scala from that point, you may simply run the following from the MXNet source root, Scala build will detect your platform (OSX/Linux) and libmxnet.so flavor (CPU/GPU):
 
 ```bash
-make scalapkg
+cd scala-package
+mvn install
 ```
 
 You can also run the unit tests and integration tests on the Scala Package by :
 
 ```bash
-make scalaunittest
-make scalaintegrationtest
+cd scala-package
+mvn integration-test -DskipTests=false
 ```
 
 Or run a subset of unit tests, for e.g.,
 
 ```bash
-make SCALA_TEST_ARGS=-Dsuites=org.apache.mxnet.NDArraySuite scalaunittest
+cd scala-package
+mvn -Dsuites=org.apache.mxnet.NDArraySuite integration-test
 ```
 
 If everything goes well, you will find jars for `assembly`, `core` and `example` modules.
-Also it produces the native library in `native/{your-architecture}/target`, which you can use to cooperate with the `core` module.
+Also it produces the native library in `native/target`, which you can use to cooperate with the `core` module.
+
+Deploy to repository
+--------------------
+
+By default, `maven deploy` will deploy artifacts to local file system, you can file then in: ``scala-package/deploy/target/repo`` folder.
+
+For nightly build in CI, a snapshot build will be uploaded to apache repository with follow command:
+
+```bash
+cd scala-package
+mvn deploy -Pnightly
+```
+
+Use following command to deploy release build (push artifacts to apache staging repository):
+
+```bash
+cd scala-package
+mvn deploy -Pstaging
+```
 
 Examples & Usage
 -------
@@ -175,3 +196,7 @@ More details about JVM Memory Management are available [here](https://github.com
 License
 -------
 MXNet Scala Package is licensed under [Apache-2](https://github.com/apache/incubator-mxnet/blob/master/scala-package/LICENSE) license.
+
+MXNet uses some 3rd party softwares. Following 3rd party license files are bundled inside Scala jar file:
+* cub/LICENSE.TXT
+* mkldnn/external/mklml_mac_2019.0.1.20180928/license.txt