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add before and after options to initialScript in postgres (#5)

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Shivaraj B H 2023-07-10 21:10:52 +05:30 committed by GitHub
parent beaaca9f55
commit 4e181b2a0c
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2 changed files with 50 additions and 19 deletions
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58
nix/postgres.nix
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@ -201,17 +201,39 @@ in
};
initialScript = lib.mkOption {
type = types.nullOr types.str;
default = null;
type = types.submodule ({ config, ... }: {
options = {
before = lib.mkOption {
type = types.nullOr types.str;
default = null;
description = ''
SQL commands to run before the database initialization.
'';
example = lib.literalExpression ''
CREATE USER postgres SUPERUSER;
CREATE USER bar;
'';
};
after = lib.mkOption {
type = types.nullOr types.str;
default = null;
description = ''
SQL commands to run after the database initialization.
'';
example = lib.literalExpression ''
CREATE TABLE users (
id SERIAL PRIMARY KEY,
name VARCHAR(50) NOT NULL,
email VARCHAR(50) NOT NULL UNIQUE
);
'';
};
};
});
default = { before = null; after = null; };
description = ''
Initial SQL commands to run during database initialization. This can be multiple
SQL expressions separated by a semi-colon.
NOTE: initialScript is run /before/ initialDatabases are created.
'';
example = lib.literalExpression ''
CREATE USER postgres SUPERUSER;
CREATE USER bar;
'';
};
};
@ -280,12 +302,17 @@ in
echo "CREATE DATABASE ''${USER:-$(id -nu)};" | postgres --single -E postgres '';
runInitialScript =
if cfg.initialScript != null then
''
echo "${cfg.initialScript}" | postgres --single -E postgres
''
else
"";
let
scriptCmd = sqlScript: ''
echo "${sqlScript}" | postgres --single -E postgres
'';
in
{
before = with cfg.initialScript;
lib.optionalString (before != null) (scriptCmd before);
after = with cfg.initialScript;
lib.optionalString (after != null) (scriptCmd after);
};
toStr = value:
if true == value then
@ -309,8 +336,9 @@ in
initdb ${lib.concatStringsSep " " cfg.initdbArgs}
set +x
${runInitialScript}
${runInitialScript.before}
${setupInitialDatabases}
${runInitialScript.after}
else
echo "Postgres data directory already exists. Skipping initialization."
fi

11
nix/postgres_test.nix
View File

@ -2,11 +2,10 @@
services.postgres = {
enable = true;
listen_addresses = "127.0.0.1";
initialScript.before = "CREATE USER bar;";
initialScript.after = "CREATE DATABASE foo OWNER bar;";
};
testScript =
let
psql = "${config.services.postgres.package}/bin/psql";
in
testScript = let psql = "${config.services.postgres.package}/bin/psql"; in
''
process_compose.wait_until(lambda procs:
# TODO: Check for 'ready'
@ -14,5 +13,9 @@
)
machine.succeed("echo 'SELECT version();' | ${config.services.postgres.package}/bin/psql -h 127.0.0.1 -U tester")
machine.succeed("echo 'SHOW hba_file;' | ${psql} -h 127.0.0.1 -U tester | ${pkgs.gawk}/bin/awk 'NR==3' | ${pkgs.gnugrep}/bin/grep '^ /nix/store'")
# initialScript.before test
machine.succeed("echo \"SELECT 1 FROM pg_roles WHERE rolname = 'bar';\" | ${psql} -h 127.0.0.1 -U tester | grep -q 1")
# initialScript.after test
machine.succeed("echo \"SELECT 1 FROM pg_database WHERE datname = 'foo';\" | ${psql} -h 127.0.0.1 -U tester | grep -q 1")
'';
}