install and setup on centos (#1)

* install and setup on centos
* cleaned up distro-specific variables
Now imports variable values for Debian and RedHat dynamically.
Also cleans out legacy environment variables, set using the setenv script.
* allow defaults or group_vars to override local vars

defaults/main.yml

@@ -13,10 +13,10 @@ karaf_log_path: ${karaf.data}/log/
 
 karaf_logging_template: org.ops4j.pax.logging.cfg
 
-karaf_java_home: /usr/lib/jvm/java-8-openjdk-amd64
-
-karaf_java_packages:
-  - openjdk-8-jre
-  - openjdk-8-jdk
-
 karaf_systemd_template: karaf.service
+
+# The following variables have a default value depending on operating system.
+# karaf_java_home: /usr/lib/jvm/java-8-openjdk-amd64
+# karaf_java_packages:
+#   - java-1.8.0-openjdk
+#   - java-1.8.0-openjdk-devel

tasks/install.yml

@@ -1,10 +1,22 @@
 ---
 
-- name: Make sure java packages are installed
-  apt:
+- name: Include OS-specific variables
+  include_vars: "{{ ansible_os_family}}.yml"
+
+- name: Define karaf_java_home
+  set_fact:
+    karaf_java_home: "{{ __karaf_java_home }}"
+  when: karaf_java_home is not defined
+
+- name: Define karaf_java_packages
+  set_fact:
+    karaf_java_packages: "{{ __karaf_java_packages }}"
+  when: karaf_java_packages is not defined
+
+- name: Install Java packages
+  package:
     name: "{{ karaf_java_packages|join(',') }}"
     state: present
-    update_cache: yes
 
 - name: Expand Karaf Tarball
   unarchive:
@@ -29,4 +41,3 @@
     dest: "{{ karaf_install_symlink }}"
     owner: "{{ karaf_user }}"
     group: "{{ karaf_user }}"
-

tasks/service.yml

@@ -1,9 +1,14 @@
 ---
 
+- name: Copy setenv script
+  template:
+    src: setenv.j2
+    dest: "{{ karaf_install_symlink }}/bin/setenv"
+    owner: "{{ karaf_user }}"
+    group: "{{ karaf_user }}"
+
 - name: Start Karaf
   shell: >
-    JAVA_HOME={{ karaf_java_home }}
-    KARAF_HOME={{ karaf_install_symlink }}
     {{ karaf_install_symlink }}/bin/start && sleep 5
   args:
     chdir: "{{ karaf_install_symlink }}/bin"
@@ -32,8 +37,6 @@
 
 - name: Stop Karaf
   shell: >
-    JAVA_HOME={{ karaf_java_home }}
-    KARAF_HOME={{ karaf_install_symlink }}
     {{ karaf_install_symlink }}/bin/stop && sleep 1
   args:
     chdir: "{{ karaf_install_symlink }}/bin"

templates/setenv.j2

@@ -0,0 +1,51 @@
+#!/bin/sh
+#
+#    Licensed to the Apache Software Foundation (ASF) under one or more
+#    contributor license agreements.  See the NOTICE file distributed with
+#    this work for additional information regarding copyright ownership.
+#    The ASF licenses this file to You under the Apache License, Version 2.0
+#    (the "License"); you may not use this file except in compliance with
+#    the License.  You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS,
+#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#    See the License for the specific language governing permissions and
+#    limitations under the License.
+#
+
+#
+# handle specific scripts; the SCRIPT_NAME is exactly the name of the Karaf
+# script: client, instance, shell, start, status, stop, karaf
+#
+# if [ "$KARAF_SCRIPT" == "SCRIPT_NAME" ]; then
+#   Actions go here...
+# fi
+
+#
+# general settings which should be applied for all scripts go here; please keep
+# in mind that it is possible that scripts might be executed more than once, e.g.
+# in example of the start script where the start script is executed first and the
+# karaf script afterwards.
+#
+
+#
+# The following section shows the possible configuration options for the default
+# karaf scripts
+#
+export JAVA_HOME={{karaf_java_home}} # Location of Java installation
+# export JAVA_MIN_MEM # Minimum memory for the JVM
+# export JAVA_MAX_MEM # Maximum memory for the JVM
+# export JAVA_PERM_MEM # Minimum perm memory for the JVM
+# export JAVA_MAX_PERM_MEM # Maximum perm memory for the JVM
+# export EXTRA_JAVA_OPTS # Additional JVM options
+export KARAF_HOME={{karaf_install_symlink}} # Karaf home folder
+# export KARAF_DATA # Karaf data folder
+# export KARAF_BASE # Karaf base folder
+# export KARAF_ETC  # Karaf etc  folder
+# export KARAF_OPTS # Additional available Karaf options
+# export KARAF_DEBUG # Enable debug mode
+# export KARAF_REDIRECT # Enable/set the std/err redirection when using bin/start
+# export KARAF_NOROOT # Prevent execution as root if set to true

vars/Debian.yml

@@ -0,0 +1,7 @@
+---
+
+__karaf_java_home: /usr/lib/jvm/java-8-openjdk-amd64
+
+__karaf_java_packages:
+  - openjdk-8-jre
+  - openjdk-8-jdk

vars/RedHat.yml

@@ -0,0 +1,7 @@
+---
+
+__karaf_java_home: /usr/lib/jvm/java-1.8.0-openjdk
+
+__karaf_java_packages:
+  - java-1.8.0-openjdk
+  - java-1.8.0-openjdk-devel