359 lines
13 KiB
Nix
359 lines
13 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.tomcat;
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tomcat = cfg.package;
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in
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{
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###### interface
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options = {
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services.tomcat = {
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enable = mkOption {
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default = false;
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description = "Whether to enable Apache Tomcat";
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};
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package = mkOption {
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type = types.package;
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default = pkgs.tomcat7;
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example = lib.literalExample "pkgs.tomcat8";
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description = ''
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Which tomcat package to use.
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'';
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};
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baseDir = mkOption {
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default = "/var/tomcat";
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description = "Location where Tomcat stores configuration files, webapplications and logfiles";
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};
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extraGroups = mkOption {
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default = [];
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example = [ "users" ];
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description = "Defines extra groups to which the tomcat user belongs.";
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};
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user = mkOption {
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default = "tomcat";
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description = "User account under which Apache Tomcat runs.";
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};
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group = mkOption {
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default = "tomcat";
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description = "Group account under which Apache Tomcat runs.";
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};
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javaOpts = mkOption {
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default = "";
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description = "Parameters to pass to the Java Virtual Machine which spawns Apache Tomcat";
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};
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catalinaOpts = mkOption {
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default = "";
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description = "Parameters to pass to the Java Virtual Machine which spawns the Catalina servlet container";
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};
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sharedLibs = mkOption {
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default = [];
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description = "List containing JAR files or directories with JAR files which are libraries shared by the web applications";
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};
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commonLibs = mkOption {
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default = [];
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description = "List containing JAR files or directories with JAR files which are libraries shared by the web applications and the servlet container";
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};
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webapps = mkOption {
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default = [ tomcat ];
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description = "List containing WAR files or directories with WAR files which are web applications to be deployed on Tomcat";
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};
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virtualHosts = mkOption {
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default = [];
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description = "List consisting of a virtual host name and a list of web applications to deploy on each virtual host";
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};
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logPerVirtualHost = mkOption {
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default = false;
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description = "Whether to enable logging per virtual host.";
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};
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jdk = mkOption {
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default = pkgs.jdk;
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description = "Which JDK to use.";
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};
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axis2 = {
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enable = mkOption {
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default = false;
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description = "Whether to enable an Apache Axis2 container";
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};
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services = mkOption {
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default = [];
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description = "List containing AAR files or directories with AAR files which are web services to be deployed on Axis2";
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};
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};
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};
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};
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###### implementation
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config = mkIf config.services.tomcat.enable {
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users.extraGroups = singleton
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{ name = "tomcat";
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gid = config.ids.gids.tomcat;
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};
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users.extraUsers = singleton
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{ name = "tomcat";
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uid = config.ids.uids.tomcat;
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description = "Tomcat user";
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home = "/homeless-shelter";
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extraGroups = cfg.extraGroups;
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};
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systemd.services.tomcat = {
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description = "Apache Tomcat server";
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wantedBy = [ "multi-user.target" ];
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after = [ "network-interfaces.target" ];
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serviceConfig.Type = "daemon";
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preStart = ''
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# Create the base directory
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mkdir -p ${cfg.baseDir}
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# Create a symlink to the bin directory of the tomcat component
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ln -sfn ${tomcat}/bin ${cfg.baseDir}/bin
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# Create a conf/ directory
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mkdir -p ${cfg.baseDir}/conf
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chown ${cfg.user}:${cfg.group} ${cfg.baseDir}/conf
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# Symlink the config files in the conf/ directory (except for catalina.properties and server.xml)
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for i in $(ls ${tomcat}/conf | grep -v catalina.properties | grep -v server.xml)
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do
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ln -sfn ${tomcat}/conf/$i ${cfg.baseDir}/conf/`basename $i`
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done
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# Create subdirectory for virtual hosts
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mkdir -p ${cfg.baseDir}/virtualhosts
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# Create a modified catalina.properties file
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# Change all references from CATALINA_HOME to CATALINA_BASE and add support for shared libraries
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sed -e 's|''${catalina.home}|''${catalina.base}|g' \
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-e 's|shared.loader=|shared.loader=''${catalina.base}/shared/lib/*.jar|' \
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${tomcat}/conf/catalina.properties > ${cfg.baseDir}/conf/catalina.properties
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# Create a modified server.xml which also includes all virtual hosts
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sed -e "/<Engine name=\"Catalina\" defaultHost=\"localhost\">/a\ ${
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toString (map (virtualHost: ''<Host name=\"${virtualHost.name}\" appBase=\"virtualhosts/${virtualHost.name}/webapps\" unpackWARs=\"true\" autoDeploy=\"true\" xmlValidation=\"false\" xmlNamespaceAware=\"false\" >${if cfg.logPerVirtualHost then ''<Valve className=\"org.apache.catalina.valves.AccessLogValve\" directory=\"logs/${virtualHost.name}\" prefix=\"${virtualHost.name}_access_log.\" pattern=\"combined\" resolveHosts=\"false\"/>'' else ""}</Host>'') cfg.virtualHosts)}" \
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${tomcat}/conf/server.xml > ${cfg.baseDir}/conf/server.xml
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# Create a logs/ directory
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mkdir -p ${cfg.baseDir}/logs
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chown ${cfg.user}:${cfg.group} ${cfg.baseDir}/logs
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${if cfg.logPerVirtualHost then
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toString (map (h: ''
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mkdir -p ${cfg.baseDir}/logs/${h.name}
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chown ${cfg.user}:${cfg.group} ${cfg.baseDir}/logs/${h.name}
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'') cfg.virtualHosts) else ''''}
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# Create a temp/ directory
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mkdir -p ${cfg.baseDir}/temp
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chown ${cfg.user}:${cfg.group} ${cfg.baseDir}/temp
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# Create a lib/ directory
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mkdir -p ${cfg.baseDir}/lib
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chown ${cfg.user}:${cfg.group} ${cfg.baseDir}/lib
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# Create a shared/lib directory
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mkdir -p ${cfg.baseDir}/shared/lib
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chown ${cfg.user}:${cfg.group} ${cfg.baseDir}/shared/lib
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# Create a webapps/ directory
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mkdir -p ${cfg.baseDir}/webapps
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chown ${cfg.user}:${cfg.group} ${cfg.baseDir}/webapps
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# Symlink all the given common libs files or paths into the lib/ directory
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for i in ${tomcat} ${toString cfg.commonLibs}
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do
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if [ -f $i ]
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then
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# If the given web application is a file, symlink it into the common/lib/ directory
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ln -sfn $i ${cfg.baseDir}/lib/`basename $i`
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elif [ -d $i ]
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then
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# If the given web application is a directory, then iterate over the files
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# in the special purpose directories and symlink them into the tomcat tree
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for j in $i/lib/*
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do
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ln -sfn $j ${cfg.baseDir}/lib/`basename $j`
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done
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fi
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done
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# Symlink all the given shared libs files or paths into the shared/lib/ directory
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for i in ${toString cfg.sharedLibs}
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do
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if [ -f $i ]
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then
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# If the given web application is a file, symlink it into the common/lib/ directory
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ln -sfn $i ${cfg.baseDir}/shared/lib/`basename $i`
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elif [ -d $i ]
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then
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# If the given web application is a directory, then iterate over the files
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# in the special purpose directories and symlink them into the tomcat tree
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for j in $i/shared/lib/*
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do
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ln -sfn $j ${cfg.baseDir}/shared/lib/`basename $j`
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done
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fi
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done
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# Symlink all the given web applications files or paths into the webapps/ directory
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for i in ${toString cfg.webapps}
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do
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if [ -f $i ]
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then
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# If the given web application is a file, symlink it into the webapps/ directory
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ln -sfn $i ${cfg.baseDir}/webapps/`basename $i`
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elif [ -d $i ]
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then
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# If the given web application is a directory, then iterate over the files
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# in the special purpose directories and symlink them into the tomcat tree
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for j in $i/webapps/*
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do
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ln -sfn $j ${cfg.baseDir}/webapps/`basename $j`
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done
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# Also symlink the configuration files if they are included
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if [ -d $i/conf/Catalina ]
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then
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for j in $i/conf/Catalina/*
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do
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mkdir -p ${cfg.baseDir}/conf/Catalina/localhost
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ln -sfn $j ${cfg.baseDir}/conf/Catalina/localhost/`basename $j`
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done
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fi
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fi
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done
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${toString (map (virtualHost: ''
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# Create webapps directory for the virtual host
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mkdir -p ${cfg.baseDir}/virtualhosts/${virtualHost.name}/webapps
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# Modify ownership
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chown ${cfg.user}:${cfg.group} ${cfg.baseDir}/virtualhosts/${virtualHost.name}/webapps
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# Symlink all the given web applications files or paths into the webapps/ directory
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# of this virtual host
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for i in "${if virtualHost ? webapps then toString virtualHost.webapps else ""}"
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do
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if [ -f $i ]
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then
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# If the given web application is a file, symlink it into the webapps/ directory
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ln -sfn $i ${cfg.baseDir}/virtualhosts/${virtualHost.name}/webapps/`basename $i`
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elif [ -d $i ]
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then
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# If the given web application is a directory, then iterate over the files
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# in the special purpose directories and symlink them into the tomcat tree
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for j in $i/webapps/*
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do
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ln -sfn $j ${cfg.baseDir}/virtualhosts/${virtualHost.name}/webapps/`basename $j`
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done
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# Also symlink the configuration files if they are included
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if [ -d $i/conf/Catalina ]
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then
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for j in $i/conf/Catalina/*
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do
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mkdir -p ${cfg.baseDir}/conf/Catalina/${virtualHost.name}
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ln -sfn $j ${cfg.baseDir}/conf/Catalina/${virtualHost.name}/`basename $j`
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done
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fi
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fi
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done
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''
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) cfg.virtualHosts) }
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# Create a work/ directory
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mkdir -p ${cfg.baseDir}/work
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chown ${cfg.user}:${cfg.group} ${cfg.baseDir}/work
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${if cfg.axis2.enable then
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''
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# Copy the Axis2 web application
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cp -av ${pkgs.axis2}/webapps/axis2 ${cfg.baseDir}/webapps
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# Turn off addressing, which causes many errors
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sed -i -e 's%<module ref="addressing"/>%<!-- <module ref="addressing"/> -->%' ${cfg.baseDir}/webapps/axis2/WEB-INF/conf/axis2.xml
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# Modify permissions on the Axis2 application
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chown -R ${cfg.user}:${cfg.group} ${cfg.baseDir}/webapps/axis2
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# Symlink all the given web service files or paths into the webapps/axis2/WEB-INF/services directory
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for i in ${toString cfg.axis2.services}
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do
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if [ -f $i ]
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then
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# If the given web service is a file, symlink it into the webapps/axis2/WEB-INF/services
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ln -sfn $i ${cfg.baseDir}/webapps/axis2/WEB-INF/services/`basename $i`
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elif [ -d $i ]
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then
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# If the given web application is a directory, then iterate over the files
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# in the special purpose directories and symlink them into the tomcat tree
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for j in $i/webapps/axis2/WEB-INF/services/*
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do
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ln -sfn $j ${cfg.baseDir}/webapps/axis2/WEB-INF/services/`basename $j`
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done
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# Also symlink the configuration files if they are included
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if [ -d $i/conf/Catalina ]
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then
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for j in $i/conf/Catalina/*
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do
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ln -sfn $j ${cfg.baseDir}/conf/Catalina/localhost/`basename $j`
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done
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fi
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fi
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done
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''
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else ""}
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'';
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script = ''
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${pkgs.su}/bin/su -s ${pkgs.bash}/bin/sh ${cfg.user} -c 'CATALINA_BASE=${cfg.baseDir} JAVA_HOME=${cfg.jdk} JAVA_OPTS="${cfg.javaOpts}" CATALINA_OPTS="${cfg.catalinaOpts}" ${tomcat}/bin/startup.sh'
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'';
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postStop = ''
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echo "Stopping tomcat..."
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CATALINA_BASE=${cfg.baseDir} JAVA_HOME=${cfg.jdk} ${pkgs.su}/bin/su -s ${pkgs.bash}/bin/sh ${cfg.user} -c ${tomcat}/bin/shutdown.sh
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'';
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};
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};
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}
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