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feat: added monitoring for postgres query result (#6736)

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Co-authored-by: Dalton Pearson <dalton.pearson@praemo.com>
This commit is contained in:
Dalton Pearson
2026-01-14 23:48:48 +01:00
committed by GitHub
co-authored by Dalton Pearson
parent e022b5f976
commit d7296c6629
2 changed files with 308 additions and 6 deletions
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test/backend-test/monitors/test-postgres.js
+198
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@@ -49,5 +49,203 @@ describe(
await assert.rejects(postgresMonitor.check(monitor, heartbeat, {}), regex);
});
test("check() sets status to UP when custom query returns single value", async () => {
// The default timeout of 30 seconds might not be enough for the container to start
const postgresContainer = await new PostgreSqlContainer("postgres:latest")
.withStartupTimeout(60000)
.start();
const postgresMonitor = new PostgresMonitorType();
const monitor = {
databaseConnectionString: postgresContainer.getConnectionUri(),
databaseQuery: "SELECT 42",
conditions: "[]",
};
const heartbeat = {
msg: "",
status: PENDING,
};
try {
await postgresMonitor.check(monitor, heartbeat, {});
assert.strictEqual(heartbeat.status, UP, `Expected status ${UP} but got ${heartbeat.status}`);
} finally {
await postgresContainer.stop();
}
});
test("check() sets status to UP when custom query result meets condition", async () => {
const postgresContainer = await new PostgreSqlContainer("postgres:latest")
.withStartupTimeout(60000)
.start();
const postgresMonitor = new PostgresMonitorType();
const monitor = {
databaseConnectionString: postgresContainer.getConnectionUri(),
databaseQuery: "SELECT 42 AS value",
conditions: JSON.stringify([
{
type: "expression",
andOr: "and",
variable: "result",
operator: "equals",
value: "42",
},
]),
};
const heartbeat = {
msg: "",
status: PENDING,
};
try {
await postgresMonitor.check(monitor, heartbeat, {});
assert.strictEqual(heartbeat.status, UP, `Expected status ${UP} but got ${heartbeat.status}`);
} finally {
await postgresContainer.stop();
}
});
test("check() rejects when custom query result does not meet condition", async () => {
const postgresContainer = await new PostgreSqlContainer("postgres:latest")
.withStartupTimeout(60000)
.start();
const postgresMonitor = new PostgresMonitorType();
const monitor = {
databaseConnectionString: postgresContainer.getConnectionUri(),
databaseQuery: "SELECT 99 AS value",
conditions: JSON.stringify([
{
type: "expression",
andOr: "and",
variable: "result",
operator: "equals",
value: "42",
},
]),
};
const heartbeat = {
msg: "",
status: PENDING,
};
try {
await assert.rejects(
postgresMonitor.check(monitor, heartbeat, {}),
new Error("Query result did not meet the specified conditions (99)")
);
assert.strictEqual(heartbeat.status, PENDING, `Expected status should not be ${heartbeat.status}`);
} finally {
await postgresContainer.stop();
}
});
test("check() rejects when query returns no results with conditions", async () => {
const postgresContainer = await new PostgreSqlContainer("postgres:latest")
.withStartupTimeout(60000)
.start();
const postgresMonitor = new PostgresMonitorType();
const monitor = {
databaseConnectionString: postgresContainer.getConnectionUri(),
databaseQuery: "SELECT 1 WHERE 1 = 0",
conditions: JSON.stringify([
{
type: "expression",
andOr: "and",
variable: "result",
operator: "equals",
value: "1",
},
]),
};
const heartbeat = {
msg: "",
status: PENDING,
};
try {
await assert.rejects(
postgresMonitor.check(monitor, heartbeat, {}),
new Error("Database connection/query failed: Query returned no results")
);
assert.strictEqual(heartbeat.status, PENDING, `Expected status should not be ${heartbeat.status}`);
} finally {
await postgresContainer.stop();
}
});
test("check() rejects when query returns multiple rows with conditions", async () => {
const postgresContainer = await new PostgreSqlContainer("postgres:latest")
.withStartupTimeout(60000)
.start();
const postgresMonitor = new PostgresMonitorType();
const monitor = {
databaseConnectionString: postgresContainer.getConnectionUri(),
databaseQuery: "SELECT 1 UNION ALL SELECT 2",
conditions: JSON.stringify([
{
type: "expression",
andOr: "and",
variable: "result",
operator: "equals",
value: "1",
},
]),
};
const heartbeat = {
msg: "",
status: PENDING,
};
try {
await assert.rejects(
postgresMonitor.check(monitor, heartbeat, {}),
new Error("Database connection/query failed: Multiple values were found, expected only one value")
);
assert.strictEqual(heartbeat.status, PENDING, `Expected status should not be ${heartbeat.status}`);
} finally {
await postgresContainer.stop();
}
});
test("check() rejects when query returns multiple columns with conditions", async () => {
const postgresContainer = await new PostgreSqlContainer("postgres:latest")
.withStartupTimeout(60000)
.start();
const postgresMonitor = new PostgresMonitorType();
const monitor = {
databaseConnectionString: postgresContainer.getConnectionUri(),
databaseQuery: "SELECT 1 AS col1, 2 AS col2",
conditions: JSON.stringify([
{
type: "expression",
andOr: "and",
variable: "result",
operator: "equals",
value: "1",
},
]),
};
const heartbeat = {
msg: "",
status: PENDING,
};
try {
await assert.rejects(
postgresMonitor.check(monitor, heartbeat, {}),
new Error("Database connection/query failed: Multiple columns were found, expected only one value")
);
assert.strictEqual(heartbeat.status, PENDING, `Expected status should not be ${heartbeat.status}`);
} finally {
await postgresContainer.stop();
}
});
}
);