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211 lines
5.7 KiB
Nix
211 lines
5.7 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.couchdb;
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useVersion2 = strings.versionAtLeast (strings.getVersion cfg.package) "2.0";
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configFile = pkgs.writeText "couchdb.ini" (
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''
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[couchdb]
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database_dir = ${cfg.databaseDir}
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uri_file = ${cfg.uriFile}
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view_index_dir = ${cfg.viewIndexDir}
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'' + (if useVersion2 then
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''
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[chttpd]
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'' else
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''
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[httpd]
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'') +
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''
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port = ${toString cfg.port}
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bind_address = ${cfg.bindAddress}
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[log]
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file = ${cfg.logFile}
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'');
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executable = if useVersion2 then "${cfg.package}/bin/couchdb"
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else ''${cfg.package}/bin/couchdb -a ${configFile} -a ${pkgs.writeText "couchdb-extra.ini" cfg.extraConfig} -a ${cfg.configFile}'';
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in {
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###### interface
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options = {
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services.couchdb = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to run CouchDB Server.
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'';
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};
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package = mkOption {
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type = types.package;
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default = pkgs.couchdb;
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defaultText = "pkgs.couchdb";
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example = literalExample "pkgs.couchdb";
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description = ''
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CouchDB package to use.
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'';
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};
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user = mkOption {
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type = types.string;
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default = "couchdb";
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description = ''
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User account under which couchdb runs.
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'';
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};
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group = mkOption {
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type = types.string;
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default = "couchdb";
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description = ''
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Group account under which couchdb runs.
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'';
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};
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# couchdb options: http://docs.couchdb.org/en/latest/config/index.html
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databaseDir = mkOption {
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type = types.path;
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default = "/var/lib/couchdb";
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description = ''
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Specifies location of CouchDB database files (*.couch named). This
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location should be writable and readable for the user the CouchDB
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service runs as (couchdb by default).
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'';
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};
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uriFile = mkOption {
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type = types.path;
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default = "/var/run/couchdb/couchdb.uri";
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description = ''
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This file contains the full URI that can be used to access this
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instance of CouchDB. It is used to help discover the port CouchDB is
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running on (if it was set to 0 (e.g. automatically assigned any free
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one). This file should be writable and readable for the user that
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runs the CouchDB service (couchdb by default).
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'';
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};
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viewIndexDir = mkOption {
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type = types.path;
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default = "/var/lib/couchdb";
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description = ''
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Specifies location of CouchDB view index files. This location should
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be writable and readable for the user that runs the CouchDB service
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(couchdb by default).
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'';
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};
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bindAddress = mkOption {
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type = types.string;
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default = "127.0.0.1";
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description = ''
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Defines the IP address by which CouchDB will be accessible.
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'';
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};
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port = mkOption {
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type = types.int;
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default = 5984;
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description = ''
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Defined the port number to listen.
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'';
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};
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logFile = mkOption {
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type = types.path;
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default = "/var/log/couchdb.log";
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description = ''
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Specifies the location of file for logging output.
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'';
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};
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extraConfig = mkOption {
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type = types.lines;
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default = "";
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description = ''
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Extra configuration. Overrides any other cofiguration.
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'';
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};
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configFile = mkOption {
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type = types.string;
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description = ''
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Configuration file for persisting runtime changes. File
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needs to be readable and writable from couchdb user/group.
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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.couchdb.enable {
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environment.systemPackages = [ cfg.package ];
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services.couchdb.configFile = mkDefault
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(if useVersion2 then "/var/lib/couchdb/local.ini" else "/var/lib/couchdb/couchdb.ini");
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systemd.services.couchdb = {
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description = "CouchDB Server";
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wantedBy = [ "multi-user.target" ];
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preStart =
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''
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mkdir -p `dirname ${cfg.uriFile}`;
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mkdir -p `dirname ${cfg.logFile}`;
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mkdir -p ${cfg.databaseDir};
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mkdir -p ${cfg.viewIndexDir};
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touch ${cfg.configFile}
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touch -a ${cfg.logFile}
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if [ "$(id -u)" = 0 ]; then
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chown ${cfg.user}:${cfg.group} `dirname ${cfg.uriFile}`;
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(test -f ${cfg.uriFile} && chown ${cfg.user}:${cfg.group} ${cfg.uriFile}) || true
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chown ${cfg.user}:${cfg.group} ${cfg.databaseDir}
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chown ${cfg.user}:${cfg.group} ${cfg.viewIndexDir}
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chown ${cfg.user}:${cfg.group} ${cfg.configFile}
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chown ${cfg.user}:${cfg.group} ${cfg.logFile}
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fi
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'';
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environment = mkIf useVersion2 {
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# we are actually specifying 4 configuration files:
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# 1. the preinstalled default.ini
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# 2. the module configuration
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# 3. the extraConfig from the module options
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# 4. the locally writable config file, which couchdb itself writes to
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ERL_FLAGS= ''-couch_ini ${cfg.package}/etc/default.ini ${configFile} ${pkgs.writeText "couchdb-extra.ini" cfg.extraConfig} ${cfg.configFile}'';
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};
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serviceConfig = {
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PermissionsStartOnly = true;
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User = cfg.user;
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Group = cfg.group;
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ExecStart = executable;
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};
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};
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users.users.couchdb = {
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description = "CouchDB Server user";
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group = "couchdb";
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uid = config.ids.uids.couchdb;
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};
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users.groups.couchdb.gid = config.ids.gids.couchdb;
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};
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}
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