mirror of
https://github.com/NixOS/nixpkgs.git
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d9d87c5196
After final improvements to the official formatter implementation,
this commit now performs the first treewide reformat of Nix files using it.
This is part of the implementation of RFC 166.
Only "inactive" files are reformatted, meaning only files that
aren't being touched by any PR with activity in the past 2 months.
This is to avoid conflicts for PRs that might soon be merged.
Later we can do a full treewide reformat to get the rest,
which should not cause as many conflicts.
A CI check has already been running for some time to ensure that new and
already-formatted files are formatted, so the files being reformatted here
should also stay formatted.
This commit was automatically created and can be verified using
nix-build https://github.com/infinisil/treewide-nixpkgs-reformat-script/archive/a08b3a4d199c6124ac5b36a889d9099b4383463f.tar.gz \
--argstr baseRev 0128fbb0a5
result/bin/apply-formatting $NIXPKGS_PATH
97 lines
2.8 KiB
Nix
97 lines
2.8 KiB
Nix
{
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config,
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lib,
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pkgs,
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options,
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...
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}:
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let
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cfg = config.services.prometheus.exporters.postgres;
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inherit (lib)
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mkOption
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types
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mkIf
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mkForce
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concatStringsSep
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;
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in
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{
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port = 9187;
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extraOpts = {
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telemetryPath = mkOption {
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type = types.str;
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default = "/metrics";
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description = ''
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Path under which to expose metrics.
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'';
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};
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dataSourceName = mkOption {
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type = types.str;
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default = "user=postgres database=postgres host=/run/postgresql sslmode=disable";
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example = "postgresql://username:password@localhost:5432/postgres?sslmode=disable";
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description = ''
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Accepts PostgreSQL URI form and key=value form arguments.
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'';
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};
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runAsLocalSuperUser = 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 the exporter as the local 'postgres' super user.
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'';
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};
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# TODO perhaps LoadCredential would be more appropriate
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environmentFile = mkOption {
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type = types.nullOr types.path;
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default = null;
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example = "/root/prometheus-postgres-exporter.env";
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description = ''
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Environment file as defined in {manpage}`systemd.exec(5)`.
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Secrets may be passed to the service without adding them to the
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world-readable Nix store, by specifying placeholder variables as
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the option value in Nix and setting these variables accordingly in the
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environment file.
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Environment variables from this file will be interpolated into the
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config file using envsubst with this syntax:
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`$ENVIRONMENT ''${VARIABLE}`
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The main use is to set the DATA_SOURCE_NAME that contains the
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postgres password
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note that contents from this file will override dataSourceName
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if you have set it from nix.
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```
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# Content of the environment file
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DATA_SOURCE_NAME=postgresql://username:password@localhost:5432/postgres?sslmode=disable
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```
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Note that this file needs to be available on the host on which
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this exporter is running.
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'';
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};
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};
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serviceOpts = {
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environment.DATA_SOURCE_NAME = cfg.dataSourceName;
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serviceConfig = {
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DynamicUser = false;
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User = mkIf cfg.runAsLocalSuperUser (mkForce "postgres");
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EnvironmentFile = mkIf (cfg.environmentFile != null) [ cfg.environmentFile ];
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ExecStart = ''
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${pkgs.prometheus-postgres-exporter}/bin/postgres_exporter \
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--web.listen-address ${cfg.listenAddress}:${toString cfg.port} \
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--web.telemetry-path ${cfg.telemetryPath} \
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${concatStringsSep " \\\n " cfg.extraFlags}
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'';
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RestrictAddressFamilies = [
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# Need AF_UNIX to collect data
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"AF_UNIX"
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];
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};
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};
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}
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