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423 lines
16 KiB
423 lines
16 KiB
{ 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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meta = {
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maintainers = with maintainers; [ danbst ];
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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 = mkEnableOption "Apache Tomcat";
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package = mkOption {
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type = types.package;
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default = pkgs.tomcat9;
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defaultText = literalExpression "pkgs.tomcat9";
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example = lib.literalExpression "pkgs.tomcat9";
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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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purifyOnStart = mkOption {
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type = types.bool;
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default = false;
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description = ''
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On startup, the `baseDir` directory is populated with various files,
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subdirectories and symlinks. If this option is enabled, these items
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(except for the `logs` and `work` subdirectories) are first removed.
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This prevents interference from remainders of an old configuration
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(libraries, webapps, etc.), so it's recommended to enable this option.
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'';
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};
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baseDir = mkOption {
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type = lib.types.path;
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default = "/var/tomcat";
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description = ''
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Location where Tomcat stores configuration files, web applications
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and logfiles. Note that it is partially cleared on each service startup
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if `purifyOnStart` is enabled.
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'';
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};
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logDirs = mkOption {
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default = [];
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type = types.listOf types.path;
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description = "Directories to create in baseDir/logs/";
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};
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extraConfigFiles = mkOption {
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default = [];
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type = types.listOf types.path;
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description = "Extra configuration files to pull into the tomcat conf directory";
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};
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extraEnvironment = mkOption {
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type = types.listOf types.str;
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default = [];
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example = [ "ENVIRONMENT=production" ];
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description = "Environment Variables to pass to the tomcat service";
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};
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extraGroups = mkOption {
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default = [];
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type = types.listOf types.str;
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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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type = types.str;
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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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type = types.str;
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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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type = types.either (types.listOf types.str) types.str;
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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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type = types.either (types.listOf types.str) types.str;
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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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type = types.listOf types.str;
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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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serverXml = mkOption {
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type = types.lines;
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default = "";
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description = "
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Verbatim server.xml configuration.
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This is mutually exclusive with the virtualHosts options.
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";
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};
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commonLibs = mkOption {
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type = types.listOf types.str;
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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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type = types.listOf types.path;
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default = [ tomcat.webapps ];
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defaultText = literalExpression "[ config.services.tomcat.package.webapps ]";
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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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type = types.listOf (types.submodule {
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options = {
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name = mkOption {
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type = types.str;
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description = "name of the virtualhost";
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};
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aliases = mkOption {
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type = types.listOf types.str;
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description = "aliases of the virtualhost";
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default = [];
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};
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webapps = mkOption {
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type = types.listOf types.path;
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description = ''
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List containing web application WAR files and/or directories containing
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web applications and configuration files for the virtual host.
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'';
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default = [];
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};
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};
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});
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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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type = types.bool;
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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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type = types.package;
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default = pkgs.jdk;
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defaultText = literalExpression "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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type = types.bool;
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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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type = types.listOf types.str;
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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.groups.tomcat.gid = config.ids.gids.tomcat;
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users.users.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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group = "tomcat";
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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.target" ];
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preStart = ''
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${lib.optionalString cfg.purifyOnStart ''
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# Delete most directories/symlinks we create from the existing base directory,
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# to get rid of remainders of an old configuration.
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# The list of directories to delete is taken from the "mkdir" command below,
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# excluding "logs" (because logs are valuable) and "work" (because normally
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# session files are there), and additionally including "bin".
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rm -rf ${cfg.baseDir}/{conf,virtualhosts,temp,lib,shared/lib,webapps,bin}
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''}
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# Create the base directory
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mkdir -p \
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${cfg.baseDir}/{conf,virtualhosts,logs,temp,lib,shared/lib,webapps,work}
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chown ${cfg.user}:${cfg.group} \
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${cfg.baseDir}/{conf,virtualhosts,logs,temp,lib,shared/lib,webapps,work}
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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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# 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); do
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ln -sfn ${tomcat}/conf/$i ${cfg.baseDir}/conf/`basename $i`
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done
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${if cfg.extraConfigFiles != [] then ''
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for i in ${toString cfg.extraConfigFiles}; do
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ln -sfn $i ${cfg.baseDir}/conf/`basename $i`
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done
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'' else ""}
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# Create a modified catalina.properties file
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# Change all references from CATALINA_HOME to CATALINA_BASE and add support for shared libraries
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sed -e 's|''${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 > ${cfg.baseDir}/conf/catalina.properties
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${if cfg.serverXml != "" then ''
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cp -f ${pkgs.writeTextDir "server.xml" cfg.serverXml}/* ${cfg.baseDir}/conf/
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'' else
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let
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hostElementForVirtualHost = virtualHost: ''
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<Host name="${virtualHost.name}" appBase="virtualhosts/${virtualHost.name}/webapps"
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unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false">
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'' + concatStrings (innerElementsForVirtualHost virtualHost) + ''
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</Host>
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'';
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innerElementsForVirtualHost = virtualHost:
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(map (alias: ''
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<Alias>${alias}</Alias>
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'') virtualHost.aliases)
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++ (optional cfg.logPerVirtualHost ''
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<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs/${virtualHost.name}"
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prefix="${virtualHost.name}_access_log." pattern="combined" resolveHosts="false"/>
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'');
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hostElementsString = concatMapStringsSep "\n" hostElementForVirtualHost cfg.virtualHosts;
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hostElementsSedString = replaceStrings ["\n"] ["\\\n"] hostElementsString;
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in ''
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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\\"${escapeShellArg hostElementsSedString} \
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${tomcat}/conf/server.xml > ${cfg.baseDir}/conf/server.xml
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''
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}
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${optionalString (cfg.logDirs != []) ''
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for i in ${toString cfg.logDirs}; do
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mkdir -p ${cfg.baseDir}/logs/$i
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chown ${cfg.user}:${cfg.group} ${cfg.baseDir}/logs/$i
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done
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''}
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${optionalString cfg.logPerVirtualHost (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))}
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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}; do
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if [ -f $i ]; 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 ]; 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/*; 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}; do
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if [ -f $i ]; 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 ]; 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/*; 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}; do
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if [ -f $i ]; 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 ]; 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/*; 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 ]; then
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for j in $i/conf/Catalina/*; 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 ""}"; do
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if [ -f $i ]; 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 ]; 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/*; 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 ]; then
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for j in $i/conf/Catalina/*; 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 $j`
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done
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fi
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fi
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done
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'') cfg.virtualHosts)}
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${optionalString cfg.axis2.enable ''
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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}; do
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if [ -f $i ]; 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 ]; 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/*; 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 ]; then
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for j in $i/conf/Catalina/*; do
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ln -sfn $j ${cfg.baseDir}/conf/Catalina/localhost/`basename $j`
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done
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fi
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fi
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done
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''}
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'';
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serviceConfig = {
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Type = "forking";
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PermissionsStartOnly = true;
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PIDFile="/run/tomcat/tomcat.pid";
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RuntimeDirectory = "tomcat";
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User = cfg.user;
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Environment=[
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"CATALINA_BASE=${cfg.baseDir}"
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"CATALINA_PID=/run/tomcat/tomcat.pid"
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"JAVA_HOME='${cfg.jdk}'"
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"JAVA_OPTS='${builtins.toString cfg.javaOpts}'"
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"CATALINA_OPTS='${builtins.toString cfg.catalinaOpts}'"
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] ++ cfg.extraEnvironment;
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ExecStart = "${tomcat}/bin/startup.sh";
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ExecStop = "${tomcat}/bin/shutdown.sh";
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};
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};
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};
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}
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