Java env builder with Maven (#783)

Java environment builder with support for Maven builds. Default build comman runs `mvn clean package` and picks up target/*with-dependencies.jar for function.

environments/fetcher/fetcher.go

@@ -42,8 +42,9 @@ type (
 	// UploadRequest send from builder manager describes which
 	// deployment package should be upload to storage service.
 	UploadRequest struct {
-		Filename      string `json:"filename"`
-		StorageSvcUrl string `json:"storagesvcurl"`
+		Filename       string `json:"filename"`
+		StorageSvcUrl  string `json:"storagesvcurl"`
+		ArchivePackage bool   `json:"archivepackage"`
 	}
 
 	// UploadResponse defines the download url of an archive and
@@ -421,12 +422,22 @@ func (fetcher *Fetcher) UploadHandler(w http.ResponseWriter, r *http.Request) {
 	srcFilepath := filepath.Join(fetcher.sharedVolumePath, req.Filename)
 	dstFilepath := filepath.Join(fetcher.sharedVolumePath, zipFilename)
 
-	err = fetcher.archive(srcFilepath, dstFilepath)
-	if err != nil {
-		e := fmt.Sprintf("Error archiving zip file: %v", err)
-		log.Println(e)
-		http.Error(w, e, http.StatusInternalServerError)
-		return
+	if req.ArchivePackage {
+		err = fetcher.archive(srcFilepath, dstFilepath)
+		if err != nil {
+			e := fmt.Sprintf("Error archiving zip file: %v", err)
+			log.Println(e)
+			http.Error(w, e, http.StatusInternalServerError)
+			return
+		}
+	} else {
+		err = os.Rename(srcFilepath, dstFilepath)
+		if err != nil {
+			e := fmt.Sprintf("Error renaming the archive: %v", err)
+			log.Println(e)
+			http.Error(w, e, http.StatusInternalServerError)
+			return
+		}
 	}
 
 	log.Println("Starting upload...")

environments/jvm/builder/Dockerfile

@@ -0,0 +1,47 @@
+## Fission builder base image
+ARG BUILDER_IMAGE=fission/builder:latest
+FROM ${BUILDER_IMAGE}
+
+## Section copied from the OpenJDK 8 Dockerfile
+
+ENV LANG C.UTF-8
+RUN { \
+    echo '#!/bin/sh'; \
+    echo 'set -e'; \
+    echo; \
+    echo 'dirname "$(dirname "$(readlink -f "$(which javac || which java)")")"'; \
+    } > /usr/local/bin/docker-java-home \
+    && chmod +x /usr/local/bin/docker-java-home
+ENV JAVA_HOME /usr/lib/jvm/java-1.8-openjdk
+ENV PATH $PATH:/usr/lib/jvm/java-1.8-openjdk/jre/bin:/usr/lib/jvm/java-1.8-openjdk/bin
+
+ENV JAVA_VERSION 8u171
+ENV JAVA_ALPINE_VERSION 8.171.11-r0
+
+RUN set -x \
+    && apk add --no-cache \
+    openjdk8="$JAVA_ALPINE_VERSION" \
+    && [ "$JAVA_HOME" = "$(docker-java-home)" ]
+
+## Section copied from the Maven Dockerfile
+
+RUN apk add --no-cache curl tar bash procps
+
+ARG MAVEN_VERSION=3.5.4
+ARG USER_HOME_DIR="/root"
+ARG SHA=ce50b1c91364cb77efe3776f756a6d92b76d9038b0a0782f7d53acf1e997a14d
+ARG BASE_URL=https://apache.osuosl.org/maven/maven-3/${MAVEN_VERSION}/binaries
+
+RUN mkdir -p /usr/share/maven /usr/share/maven/ref \
+    && curl -fsSL -o /tmp/apache-maven.tar.gz ${BASE_URL}/apache-maven-${MAVEN_VERSION}-bin.tar.gz \
+    && echo "${SHA}  /tmp/apache-maven.tar.gz" | sha256sum -c - \
+    && tar -xzf /tmp/apache-maven.tar.gz -C /usr/share/maven --strip-components=1 \
+    && rm -f /tmp/apache-maven.tar.gz \
+    && ln -s /usr/share/maven/bin/mvn /usr/bin/mvn
+
+ENV MAVEN_HOME /usr/share/maven
+ENV MAVEN_CONFIG "$USER_HOME_DIR/.m2"
+
+## Fission builder specific section
+ADD build.sh /usr/local/bin/build
+EXPOSE 8001

environments/jvm/builder/build.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+set -eou pipefail
+mvn clean package
+cp ${SRC_PKG}/target/*with-dependencies.jar ${DEPLOY_PKG}