Add RHEL support to Java feature

src/java/NOTES.md

@@ -5,6 +5,6 @@ For the Java Feature from this repository, see [NOTICE.txt](https://github.com/d
 
 ## OS Support
 
-This Feature should work on recent versions of Debian/Ubuntu-based distributions with the `apt` package manager installed.
+Debian/Ubuntu, RedHat Enterprise Linux, Fedora, Alma, and RockyLinux distributions with the `apt`, `yum`, `dnf`, or `microdnf` package manager installed.
 
 `bash` is required to execute the `install.sh` script.

src/java/devcontainer-feature.json

@@ -1,6 +1,6 @@
 {
   "id": "java",
-  "version": "1.3.0",
+  "version": "1.4.0",
   "name": "Java (via SDKMAN!)",
   "documentationURL": "https://github.com/devcontainers/features/tree/main/src/java",
   "description": "Installs Java, SDKMAN! (if not installed), and needed dependencies.",
@@ -111,4 +111,4 @@
   "installsAfter": [
     "ghcr.io/devcontainers/features/common-utils"
   ]
-}
+}

src/java/install.sh

@@ -30,14 +30,65 @@ ADDITIONAL_VERSIONS="${ADDITIONALVERSIONS:-""}"
 
 set -e
 
-# Clean up
-rm -rf /var/lib/apt/lists/*
-
 if [ "$(id -u)" -ne 0 ]; then
     echo -e 'Script must be run as root. Use sudo, su, or add "USER root" to your Dockerfile before running this script.'
     exit 1
 fi
 
+# Bring in ID, ID_LIKE, VERSION_ID, VERSION_CODENAME
+. /etc/os-release
+# Get an adjusted ID independent of distro variants
+MAJOR_VERSION_ID=$(echo ${VERSION_ID} | cut -d . -f 1)
+if [ "${ID}" = "debian" ] || [ "${ID_LIKE}" = "debian" ]; then
+    ADJUSTED_ID="debian"
+elif [[ "${ID}" = "rhel" || "${ID}" = "fedora" || "${ID}" = "mariner" || "${ID_LIKE}" = *"rhel"* || "${ID_LIKE}" = *"fedora"* || "${ID_LIKE}" = *"mariner"* ]]; then
+    ADJUSTED_ID="rhel"
+    if [[ "${ID}" = "rhel" ]] || [[ "${ID}" = *"alma"* ]] || [[ "${ID}" = *"rocky"* ]]; then
+        VERSION_CODENAME="rhel${MAJOR_VERSION_ID}"
+    else
+        VERSION_CODENAME="${ID}${MAJOR_VERSION_ID}"
+    fi
+else
+    echo "Linux distro ${ID} not supported."
+    exit 1
+fi
+
+# Setup INSTALL_CMD & PKG_MGR_CMD
+if type apt-get > /dev/null 2>&1; then
+    PKG_MGR_CMD=apt-get
+    INSTALL_CMD="${PKG_MGR_CMD} -y install --no-install-recommends"
+elif type microdnf > /dev/null 2>&1; then
+    PKG_MGR_CMD=microdnf
+    INSTALL_CMD="${PKG_MGR_CMD} -y install --refresh --best --nodocs --noplugins --setopt=install_weak_deps=0"
+elif type dnf > /dev/null 2>&1; then
+    PKG_MGR_CMD=dnf
+    INSTALL_CMD="${PKG_MGR_CMD} -y install"
+elif type yum > /dev/null 2>&1; then
+    PKG_MGR_CMD=yum
+    INSTALL_CMD="${PKG_MGR_CMD} -y install"
+else
+    echo "(Error) Unable to find a supported package manager."
+    exit 1
+fi
+
+# Clean up
+clean_up() {
+    local pkg
+    case ${ADJUSTED_ID} in
+        debian)
+            rm -rf /var/lib/apt/lists/*
+            ;;
+        rhel)
+            for pkg in epel-release epel-release-latest packages-microsoft-prod; do
+                ${PKG_MGR_CMD} -y remove $pkg 2>/dev/null || /bin/true
+            done
+            rm -rf /var/cache/dnf/* /var/cache/yum/*
+            rm -f /etc/yum.repos.d/docker-ce.repo
+            ;;
+    esac
+}
+clean_up
+
 # Ensure that login shells get the correct path if the user updated the PATH using ENV.
 rm -f /etc/profile.d/00-restore-env.sh
 echo "export PATH=${PATH//$(sh -lc 'echo $PATH')/\$PATH}" > /etc/profile.d/00-restore-env.sh
@@ -61,31 +112,79 @@ elif [ "${USERNAME}" = "none" ] || ! id -u ${USERNAME} > /dev/null 2>&1; then
 fi
 
 updaterc() {
+    local _bashrc
+    local _zshrc
     if [ "${UPDATE_RC}" = "true" ]; then
-        echo "Updating /etc/bash.bashrc and /etc/zsh/zshrc..."
-        if [[ "$(cat /etc/bash.bashrc)" != *"$1"* ]]; then
-            echo -e "$1" >> /etc/bash.bashrc
+        case $ADJUSTED_ID in
+            debian)
+                _bashrc=/etc/bash.bashrc
+                _zshrc=/etc/zsh/zshrc
+                ;;
+            rhel)
+                _bashrc=/etc/bashrc
+                _zshrc=/etc/zshrc
+            ;;
+        esac
+        echo "Updating ${_bashrc} and ${_zshrc}..."
+        if [[ "$(cat ${_bashrc})" != *"$1"* ]]; then
+            echo -e "$1" >> "${_bashrc}"
         fi
-        if [ -f "/etc/zsh/zshrc" ] && [[ "$(cat /etc/zsh/zshrc)" != *"$1"* ]]; then
-            echo -e "$1" >> /etc/zsh/zshrc
+        if [ -f "${_zshrc}" ] && [[ "$(cat ${_zshrc})" != *"$1"* ]]; then
+            echo -e "$1" >> "${_zshrc}"
         fi
     fi
 }
 
-apt_get_update()
-{
-    if [ "$(find /var/lib/apt/lists/* | wc -l)" = "0" ]; then
-        echo "Running apt-get update..."
-        apt-get update -y
-    fi
+
+pkg_manager_update() {
+    case $ADJUSTED_ID in
+        debian)
+            if [ "$(find /var/lib/apt/lists/* | wc -l)" = "0" ]; then
+                echo "Running apt-get update..."
+                ${PKG_MGR_CMD} update -y
+            fi
+            ;;
+        rhel)
+            if [ ${PKG_MGR_CMD} = "microdnf" ]; then
+                if [ "$(ls /var/cache/yum/* 2>/dev/null | wc -l)" = 0 ]; then
+                    echo "Running ${PKG_MGR_CMD} makecache ..."
+                    ${PKG_MGR_CMD} makecache
+                fi
+            else
+                if [ "$(ls /var/cache/${PKG_MGR_CMD}/* 2>/dev/null | wc -l)" = 0 ]; then
+                    echo "Running ${PKG_MGR_CMD} check-update ..."
+                    set +e
+                        stderr_messages=$(${PKG_MGR_CMD} -q check-update 2>&1)
+                        rc=$?
+                        # centos 7 sometimes returns a status of 100 when it apears to work.
+                        if [ $rc != 0 ] && [ $rc != 100 ]; then
+                            echo "(Error) ${PKG_MGR_CMD} check-update produced the following error message(s):"
+                            echo "${stderr_messages}"
+                            exit 1
+                        fi
+                    set -e
+                fi
+            fi
+            ;;
+    esac
 }
 
 # Checks if packages are installed and installs them if not
 check_packages() {
-    if ! dpkg -s "$@" > /dev/null 2>&1; then
-        apt_get_update
-        apt-get -y install --no-install-recommends "$@"
-    fi
+    case ${ADJUSTED_ID} in
+        debian)
+            if ! dpkg -s "$@" > /dev/null 2>&1; then
+                pkg_manager_update
+                ${INSTALL_CMD} "$@"
+            fi
+            ;;
+        rhel)
+            if ! rpm -q "$@" > /dev/null 2>&1; then
+                pkg_manager_update
+                ${INSTALL_CMD} "$@"
+            fi
+            ;;
+    esac
 }
 
 # Use Microsoft JDK for everything but JDK 8 and 18 (unless specified differently with jdkDistro option)
@@ -142,8 +241,19 @@ if [ "${architecture}" != "amd64" ] && [ "${architecture}" != "x86_64" ] && [ "$
     exit 1
 fi
 
-# Install dependencies
-check_packages curl ca-certificates zip unzip sed
+# Install dependencies,
+check_packages ca-certificates zip unzip sed findutils util-linux tar
+# Make sure passwd (Debian) and shadow-utils RHEL family is installed
+if [ ${ADJUSTED_ID} = "debian" ]; then
+    check_packages passwd
+elif [ ${ADJUSTED_ID} = "rhel" ]; then
+    check_packages shadow-utils
+fi
+# minimal RHEL installs may not include curl, or includes curl-minimal instead.
+# Install curl if the "curl" command is not present.
+if ! type curl > /dev/null 2>&1; then
+    check_packages curl
+fi
 
 # Install sdkman if not installed
 if [ ! -d "${SDKMAN_DIR}" ]; then
@@ -178,26 +288,26 @@ if [ ! -z "${ADDITIONAL_VERSIONS}" ]; then
 fi
 
 # Install Ant
-if [[ "${INSTALL_ANT}" = "true" ]] && ! ant -version > /dev/null; then
+if [[ "${INSTALL_ANT}" = "true" ]] && ! ant -version > /dev/null 2>&1; then
     sdk_install ant ${ANT_VERSION}
 fi
 
 # Install Gradle
-if [[ "${INSTALL_GRADLE}" = "true" ]] && ! gradle --version > /dev/null; then
+if [[ "${INSTALL_GRADLE}" = "true" ]] && ! gradle --version > /dev/null 2>&1; then
     sdk_install gradle ${GRADLE_VERSION}
 fi
 
 # Install Maven
-if [[ "${INSTALL_MAVEN}" = "true" ]] && ! mvn --version > /dev/null; then
+if [[ "${INSTALL_MAVEN}" = "true" ]] && ! mvn --version > /dev/null 2>&1; then
     sdk_install maven ${MAVEN_VERSION}
 fi
 
 # Install Groovy
-if [[ "${INSTALL_GROOVY}" = "true" ]] && ! groovy --version > /dev/null; then
+if [[ "${INSTALL_GROOVY}" = "true" ]] && ! groovy --version > /dev/null 2>&1; then
     sdk_install groovy "${GROOVY_VERSION}"
 fi
 
 # Clean up
-rm -rf /var/lib/apt/lists/*
+clean_up
 
 echo "Done!"

test/java/alma-8-minimal.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -e
+
+# Optional: Import test library
+source dev-container-features-test-lib
+
+# Definition specific tests
+check "version" java  --version
+
+# Check env
+check "JAVA_HOME is set correctly" echo $JAVA_HOME | grep "/usr/local/sdkman/candidates/java/current"
+
+# Report result
+reportResults

test/java/alma-8.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -e
+
+# Optional: Import test library
+source dev-container-features-test-lib
+
+# Definition specific tests
+check "version" java  --version
+
+# Check env
+check "JAVA_HOME is set correctly" echo $JAVA_HOME | grep "/usr/local/sdkman/candidates/java/current"
+
+# Report result
+reportResults

test/java/alma-9-minimal.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -e
+
+# Optional: Import test library
+source dev-container-features-test-lib
+
+# Definition specific tests
+check "version" java  --version
+
+# Check env
+check "JAVA_HOME is set correctly" echo $JAVA_HOME | grep "/usr/local/sdkman/candidates/java/current"
+
+# Report result
+reportResults

test/java/alma-9.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -e
+
+# Optional: Import test library
+source dev-container-features-test-lib
+
+# Definition specific tests
+check "version" java  --version
+
+# Check env
+check "JAVA_HOME is set correctly" echo $JAVA_HOME | grep "/usr/local/sdkman/candidates/java/current"
+
+# Report result
+reportResults

test/java/centos-7.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -e
+
+# Optional: Import test library
+source dev-container-features-test-lib
+
+# Definition specific tests
+check "version" java  --version
+
+# Check env
+check "JAVA_HOME is set correctly" echo $JAVA_HOME | grep "/usr/local/sdkman/candidates/java/current"
+
+# Report result
+reportResults

test/java/fedora.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -e
+
+# Optional: Import test library
+source dev-container-features-test-lib
+
+# Definition specific tests
+check "version" java  --version
+
+# Check env
+check "JAVA_HOME is set correctly" echo $JAVA_HOME | grep "/usr/local/sdkman/candidates/java/current"
+
+# Report result
+reportResults

test/java/install_additional_java_rhel_family.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+set -e
+
+# Optional: Import test library
+source dev-container-features-test-lib
+
+check "java version 11 installed as default" grep "11\." <(java --version)
+check "java version 17 installed" grep "^17\." <(ls /usr/local/sdkman/candidates/java)
+check "java version 8 installed" grep "^8\." <(ls /usr/local/sdkman/candidates/java)
+
+# Report result
+reportResults

test/java/install_ant_and_gradle_and_maven_and_groovy_for_user_rhel_family.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+set -e
+
+# Optional: Import test library
+source dev-container-features-test-lib
+
+check "user is vscode" grep vscode <(whoami)
+
+check "java" java --version
+
+check "ant" ant -version
+cat << EOF > /tmp/build.xml
+<project><target name="init"><mkdir dir="ant-src"/></target></project>
+EOF
+cd /tmp && ant init
+check "ant-src exists" grep "ant-src" <(ls -la /tmp)
+
+check "gradle" gradle --version
+cd /tmp && gradle init --type basic --dsl groovy --incubating --project-name test
+check "GRADLE_USER_HOME exists" grep ".gradle" <(ls -la /home/vscode)
+
+check "maven" mvn --version
+cd /tmp && mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DarchetypeVersion=1.4 -DinteractiveMode=false
+check "m2 exists" grep ".m2" <(ls -la /home/vscode)
+
+check "groovy" groovy --version
+cat << EOF > /tmp/test.groovy
+println("verify")
+EOF
+check "groovy works" test "$(groovy /tmp/test.groovy)" = "verify"
+
+# Report result
+reportResults