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Merge pull request #228288 from Cynerd/bigclown
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{ | ||
config, | ||
lib, | ||
pkgs, | ||
... | ||
}: | ||
|
||
with lib; | ||
|
||
let | ||
cfg = config.services.bcg; | ||
configFile = (pkgs.formats.yaml {}).generate "bcg.conf.yaml" ( | ||
filterAttrsRecursive (n: v: v != null) { | ||
inherit (cfg) device name mqtt; | ||
retain_node_messages = cfg.retainNodeMessages; | ||
qos_node_messages = cfg.qosNodeMessages; | ||
base_topic_prefix = cfg.baseTopicPrefix; | ||
automatic_remove_kit_from_names = cfg.automaticRemoveKitFromNames; | ||
automatic_rename_kit_nodes = cfg.automaticRenameKitNodes; | ||
automatic_rename_generic_nodes = cfg.automaticRenameGenericNodes; | ||
automatic_rename_nodes = cfg.automaticRenameNodes; | ||
} | ||
); | ||
in | ||
{ | ||
options = { | ||
services.bcg = { | ||
enable = mkEnableOption (mdDoc "BigClown gateway"); | ||
package = mkOption { | ||
default = pkgs.python3Packages.bcg; | ||
defaultText = literalExpression "pkgs.python3Packages.bcg"; | ||
description = mdDoc "Which bcg derivation to use."; | ||
type = types.package; | ||
}; | ||
environmentFiles = mkOption { | ||
type = types.listOf types.path; | ||
default = []; | ||
example = [ "/run/keys/bcg.env" ]; | ||
description = mdDoc '' | ||
File to load as environment file. Environment variables from this file | ||
will be interpolated into the config file using envsubst with this | ||
syntax: `$ENVIRONMENT` or `''${VARIABLE}`. | ||
This is useful to avoid putting secrets into the nix store. | ||
''; | ||
}; | ||
verbose = mkOption { | ||
type = types.enum ["CRITICAL" "ERROR" "WARNING" "INFO" "DEBUG"]; | ||
default = "WARNING"; | ||
description = mdDoc "Verbosity level."; | ||
}; | ||
device = mkOption { | ||
type = types.str; | ||
description = mdDoc "Device name to configure gateway to use."; | ||
}; | ||
name = mkOption { | ||
type = with types; nullOr str; | ||
default = null; | ||
description = mdDoc '' | ||
Name for the device. | ||
Supported variables: | ||
* `{ip}` IP address | ||
* `{id}` The ID of the connected usb-dongle or core-module | ||
`null` can be used for automatic detection from gateway firmware. | ||
''; | ||
}; | ||
mqtt = { | ||
host = mkOption { | ||
type = types.str; | ||
default = "127.0.0.1"; | ||
description = mdDoc "Host where MQTT server is running."; | ||
}; | ||
port = mkOption { | ||
type = types.port; | ||
default = 1883; | ||
description = mdDoc "Port of MQTT server."; | ||
}; | ||
username = mkOption { | ||
type = with types; nullOr str; | ||
default = null; | ||
description = mdDoc "MQTT server access username."; | ||
}; | ||
password = mkOption { | ||
type = with types; nullOr str; | ||
default = null; | ||
description = mdDoc "MQTT server access password."; | ||
}; | ||
cafile = mkOption { | ||
type = with types; nullOr str; | ||
default = null; | ||
description = mdDoc "Certificate Authority file for MQTT server access."; | ||
}; | ||
certfile = mkOption { | ||
type = with types; nullOr str; | ||
default = null; | ||
description = mdDoc "Certificate file for MQTT server access."; | ||
}; | ||
keyfile = mkOption { | ||
type = with types; nullOr str; | ||
default = null; | ||
description = mdDoc "Key file for MQTT server access."; | ||
}; | ||
}; | ||
retainNodeMessages = mkOption { | ||
type = types.bool; | ||
default = false; | ||
description = mdDoc "Specify that node messages should be retaied in MQTT broker."; | ||
}; | ||
qosNodeMessages = mkOption { | ||
type = types.int; | ||
default = 1; | ||
description = mdDoc "Set the guarantee of MQTT message delivery."; | ||
}; | ||
baseTopicPrefix = mkOption { | ||
type = types.str; | ||
default = ""; | ||
description = mdDoc "Topic prefix added to all MQTT messages."; | ||
}; | ||
automaticRemoveKitFromNames = mkOption { | ||
type = types.bool; | ||
default = true; | ||
description = mdDoc "Automatically remove kits."; | ||
}; | ||
automaticRenameKitNodes = mkOption { | ||
type = types.bool; | ||
default = true; | ||
description = mdDoc "Automatically rename kit's nodes."; | ||
}; | ||
automaticRenameGenericNodes = mkOption { | ||
type = types.bool; | ||
default = true; | ||
description = mdDoc "Automatically rename generic nodes."; | ||
}; | ||
automaticRenameNodes = mkOption { | ||
type = types.bool; | ||
default = true; | ||
description = mdDoc "Automatically rename all nodes."; | ||
}; | ||
rename = mkOption { | ||
type = with types; attrsOf str; | ||
default = {}; | ||
description = mdDoc "Rename nodes to different name."; | ||
}; | ||
}; | ||
}; | ||
|
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config = mkIf cfg.enable { | ||
environment.systemPackages = with pkgs; [ | ||
python3Packages.bcg | ||
python3Packages.bch | ||
]; | ||
|
||
systemd.services.bcg = let | ||
envConfig = cfg.environmentFiles != []; | ||
finalConfig = if envConfig | ||
then "$RUNTIME_DIRECTORY/bcg.config.yaml" | ||
else configFile; | ||
in { | ||
description = "BigClown Gateway"; | ||
wantedBy = [ "multi-user.target" ]; | ||
wants = mkIf config.services.mosquitto.enable [ "mosquitto.service" ]; | ||
after = [ "network-online.target" ]; | ||
preStart = '' | ||
umask 077 | ||
${pkgs.envsubst}/bin/envsubst -i "${configFile}" -o "${finalConfig}" | ||
''; | ||
serviceConfig = { | ||
EnvironmentFile = cfg.environmentFiles; | ||
ExecStart="${cfg.package}/bin/bcg -c ${finalConfig} -v ${cfg.verbose}"; | ||
RuntimeDirectory = "bcg"; | ||
}; | ||
}; | ||
}; | ||
} |
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