Create new table for collector_config, configuration for the collectors

Author: Jamesbarford

database/schema.md

@@ -259,7 +259,6 @@ aid         benchmark   error
 1           syn-1.0.89  Failed to compile...
 ```
 
-
 ## New benchmarking design
 We are currently implementing a new design for dispatching benchmarks to collector(s) and storing
 them in the database. It will support new use-cases, like backfilling of new benchmarks into a parent
@@ -296,3 +295,15 @@ Columns:
   * `completed`: Completed request.
 * **backends** (`text NOT NULL`): Comma-separated list of codegen backends to benchmark. If empty, the default set of codegen backends will be benchmarked.
 * **profiles** (`text NOT NULL`): Comma-separated list of profiles to benchmark. If empty, the default set of profiles will be benchmarked.
+
+### collector_config
+
+Information about the collector; it's target architecture, when it was added, whether it is active and when it last had activity denoted by `last_heartbeat_at`.
+
+```
+sqlite> SELECT * FROM collector_config;
+
+id         target                     date_added     last_heartbeat_at  benchmark_set  is_active
+---------  -------------------------  -------------  ----------------   ---------      -------
+ea1f4e...  aarch64-unknown-linux-gnu  2025-06-11...  2025-06-12 17...   cea1bc...      0
+```

database/src/pool/postgres.rs

@@ -309,6 +309,17 @@ static MIGRATIONS: &[&str] = &[
     // Prevent multiple try commits without a `sha` and the same `pr` number
     // being added to the table
     r#"CREATE UNIQUE INDEX benchmark_request_pr_commit_type_idx ON benchmark_request (pr, commit_type) WHERE status != 'completed';"#,
+    r#"CREATE EXTENSION IF NOT EXISTS "uuid-ossp";"#,
+    r#"
+    CREATE TABLE IF NOT EXISTS collector_config (
+        id                UUID PRIMARY KEY,
+        target            TEXT NOT NULL,
+        date_added        TIMESTAMPTZ DEFAULT NOW() NOT NULL,
+        last_heartbeat_at TIMESTAMPTZ,
+        benchmark_set     UUID NOT NULL,
+        is_active         BOOLEAN DEFAULT FALSE NOT NULL
+    );
+    "#,
 ];
 
 #[async_trait::async_trait]

database/src/pool/sqlite.rs

@@ -405,6 +405,18 @@ static MIGRATIONS: &[Migration] = &[
         alter table pstat_series_with_target rename to pstat_series;
     "#,
     ),
+    Migration::without_foreign_key_constraints(
+        r#"
+        CREATE TABLE IF NOT EXISTS collector_config (
+            id                TEXT PRIMARY KEY,
+            target            TEXT NOT NULL,
+            date_added        TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
+            last_heartbeat_at TIMESTAMP,
+            benchmark_set     TEXT NOT NULL,
+            is_active         BOOLEAN DEFAULT FALSE NOT NULL
+        );
+        "#,
+    ),
 ];
 
 #[async_trait::async_trait]