fix(db): resolve workflow schedule tenant from DB

Co-authored-by: npub1jh9wn95s0472h86ahapupaf7m6kx4v9sx2n0atj2hltcfer8k06s5n3pyf <95cae996907d7cab9f5dbf43c0f53edeac6ab0b032a6feae4abfd784e467b3f5@sprout-oss.stage.blox.sqprod.co>
Signed-off-by: npub1jh9wn95s0472h86ahapupaf7m6kx4v9sx2n0atj2hltcfer8k06s5n3pyf <95cae996907d7cab9f5dbf43c0f53edeac6ab0b032a6feae4abfd784e467b3f5@sprout-oss.stage.blox.sqprod.co>

crates/buzz-db/src/event.rs

@@ -1122,8 +1122,8 @@ pub async fn release_due_reminder(
     event_id: &[u8],
     event_created_at: DateTime<Utc>,
     delivery_stamp: i64,
-) -> Result<()> {
-    sqlx::query(
+) -> Result<bool> {
+    let result = sqlx::query(
         r#"
         UPDATE events
         SET delivered_at = NULL
@@ -1138,7 +1138,7 @@ pub async fn release_due_reminder(
     .execute(pool)
     .await?;
 
-    Ok(())
+    Ok(result.rows_affected() == 1)
 }
 
 #[cfg(test)]

crates/buzz-db/src/lib.rs

@@ -664,7 +664,7 @@ impl Db {
         event_id: &[u8],
         event_created_at: chrono::DateTime<chrono::Utc>,
         delivery_stamp: i64,
-    ) -> Result<()> {
+    ) -> Result<bool> {
         event::release_due_reminder(&self.pool, event_id, event_created_at, delivery_stamp).await
     }
 
@@ -1203,6 +1203,7 @@ impl Db {
     /// Create a new workflow.
     pub async fn create_workflow(
         &self,
+        community_id: CommunityId,
         channel_id: Option<Uuid>,
         owner_pubkey: &[u8],
         name: &str,
@@ -1211,6 +1212,7 @@ impl Db {
     ) -> Result<Uuid> {
         workflow::create_workflow(
             &self.pool,
+            community_id,
             channel_id,
             owner_pubkey,
             name,
@@ -1250,43 +1252,34 @@ impl Db {
 
     /// Claim a scheduled workflow fire for an authoritative schedule instant.
     ///
-    /// Returns `Some` only for the first pod to claim `(community_id,
-    /// workflow_id, scheduled_for)`; all other pods must skip creating a run.
+    /// Returns `Some` only for the first pod to claim `(workflow_id,
+    /// scheduled_for)`; all other pods must skip creating a run. The claim SQL
+    /// resolves `community_id` from the workflow row; callers never supply it.
     pub async fn claim_scheduled_workflow_fire(
         &self,
-        community_id: CommunityId,
         workflow_id: Uuid,
         scheduled_for: chrono::DateTime<chrono::Utc>,
     ) -> Result<Option<workflow::ScheduledWorkflowFireClaim>> {
-        workflow::claim_scheduled_workflow_fire(
-            &self.pool,
-            community_id,
-            workflow_id,
-            scheduled_for,
-        )
-        .await
+        workflow::claim_scheduled_workflow_fire(&self.pool, workflow_id, scheduled_for).await
     }
 
     /// Fetch the latest claimed schedule instant for interval trigger anchoring.
     pub async fn latest_scheduled_workflow_fire(
         &self,
-        community_id: CommunityId,
         workflow_id: Uuid,
     ) -> Result<Option<chrono::DateTime<chrono::Utc>>> {
-        workflow::latest_scheduled_workflow_fire(&self.pool, community_id, workflow_id).await
+        workflow::latest_scheduled_workflow_fire(&self.pool, workflow_id).await
     }
 
     /// Attach the workflow run id created from a won scheduled-fire claim.
     pub async fn attach_scheduled_workflow_run(
         &self,
-        community_id: CommunityId,
         workflow_id: Uuid,
         scheduled_for: chrono::DateTime<chrono::Utc>,
         workflow_run_id: Uuid,
     ) -> Result<bool> {
         workflow::attach_scheduled_workflow_run(
             &self.pool,
-            community_id,
             workflow_id,
             scheduled_for,
             workflow_run_id,

crates/buzz-db/src/migration.rs

@@ -145,6 +145,20 @@ mod tests {
                 .contains("CREATE TABLE scheduled_workflow_fires"),
             "initial schema migration should include workflow cron claim table"
         );
+        assert!(
+            migrations[0]
+                .sql
+                .as_str()
+                .contains("community_id    UUID NOT NULL REFERENCES communities(id)"),
+            "workflows should carry row-owned community_id"
+        );
+        assert!(
+            migrations[0]
+                .sql
+                .as_str()
+                .contains("trg_workflows_community_id_immutable"),
+            "workflow community_id should be immutable after insert"
+        );
         assert!(
             migrations[0]
                 .sql
@@ -156,8 +170,15 @@ mod tests {
             migrations[0]
                 .sql
                 .as_str()
-                .contains("PRIMARY KEY (community_id, workflow_id, scheduled_for)"),
-            "workflow cron claim uniqueness must include the community label"
+                .contains("PRIMARY KEY (workflow_id, scheduled_for)"),
+            "workflow cron claim uniqueness should be the globally unique workflow plus schedule instant"
+        );
+        assert!(
+            migrations[0]
+                .sql
+                .as_str()
+                .contains("FOREIGN KEY (community_id, workflow_id)"),
+            "workflow cron claim table should tie community_id to the workflow row"
         );
         assert!(
             migrations[0].sql.as_str().contains("CREATE TABLE channels"),

crates/buzz-db/src/workflow.rs

@@ -165,6 +165,8 @@ impl FromStr for ApprovalStatus {
 pub struct WorkflowRecord {
     /// Unique workflow identifier.
     pub id: Uuid,
+    /// Server-resolved community that owns this workflow.
+    pub community_id: CommunityId,
     /// Human-readable workflow name.
     pub name: String,
     /// Compressed public key bytes of the workflow owner.
@@ -215,9 +217,9 @@ pub struct WorkflowRunRecord {
 
 /// A winning scheduled workflow fire claim.
 ///
-/// The primary identity is `(community_id, workflow_id, scheduled_for)`. The
-/// database also returns `claimed_at` so the workflow scheduler can log and audit
-/// the exact claim row it won without relying on a per-pod clock.
+/// The primary identity is `(workflow_id, scheduled_for)`. `community_id` is
+/// resolved from the workflow row inside the claim SQL and returned for scoped
+/// audit/logging; callers never supply it as a claim.
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct ScheduledWorkflowFireClaim {
     /// Community that owns this scheduled fire.
@@ -263,6 +265,7 @@ pub struct ApprovalRecord {
 /// New workflows start as `active` and `enabled = TRUE`.
 pub async fn create_workflow(
     pool: &PgPool,
+    community_id: CommunityId,
     channel_id: Option<Uuid>,
     owner_pubkey: &[u8],
     name: &str,
@@ -274,11 +277,12 @@ pub async fn create_workflow(
     sqlx::query(
         r#"
         INSERT INTO workflows
-            (id, name, owner_pubkey, channel_id, definition, definition_hash, status, enabled)
-        VALUES ($1, $2, $3, $4, $5::jsonb, $6, 'active', TRUE)
+            (id, community_id, name, owner_pubkey, channel_id, definition, definition_hash, status, enabled)
+        VALUES ($1, $2, $3, $4, $5, $6::jsonb, $7, 'active', TRUE)
         "#,
     )
     .bind(id)
+    .bind(community_id.as_uuid())
     .bind(name)
     .bind(owner_pubkey)
     .bind(channel_id)
@@ -294,7 +298,7 @@ pub async fn create_workflow(
 pub async fn get_workflow(pool: &PgPool, id: Uuid) -> Result<WorkflowRecord> {
     let row = sqlx::query(
         r#"
-        SELECT id, name, owner_pubkey, channel_id, definition, definition_hash,
+        SELECT id, community_id, name, owner_pubkey, channel_id, definition, definition_hash,
                status::text AS status, enabled, created_at, updated_at
         FROM workflows
         WHERE id = $1
@@ -323,7 +327,7 @@ pub async fn list_channel_workflows(
 
     let rows = sqlx::query(
         r#"
-        SELECT id, name, owner_pubkey, channel_id, definition, definition_hash,
+        SELECT id, community_id, name, owner_pubkey, channel_id, definition, definition_hash,
                status::text AS status, enabled, created_at, updated_at
         FROM workflows
         WHERE channel_id = $1
@@ -352,7 +356,7 @@ pub async fn list_enabled_channel_workflows(
 ) -> Result<Vec<WorkflowRecord>> {
     let rows = sqlx::query(
         r#"
-        SELECT id, name, owner_pubkey, channel_id, definition, definition_hash,
+        SELECT id, community_id, name, owner_pubkey, channel_id, definition, definition_hash,
                status::text AS status, enabled, created_at, updated_at
         FROM workflows
         WHERE channel_id = $1
@@ -378,7 +382,7 @@ pub async fn list_enabled_channel_workflows(
 pub async fn list_all_enabled_workflows(pool: &PgPool) -> Result<Vec<WorkflowRecord>> {
     let rows = sqlx::query(
         r#"
-        SELECT id, name, owner_pubkey, channel_id, definition, definition_hash,
+        SELECT id, community_id, name, owner_pubkey, channel_id, definition, definition_hash,
                status::text AS status, enabled, created_at, updated_at
         FROM workflows
         WHERE status = 'active'
@@ -397,27 +401,27 @@ pub async fn list_all_enabled_workflows(pool: &PgPool) -> Result<Vec<WorkflowRec
 
 /// Claim a scheduled workflow fire for an authoritative schedule instant.
 ///
-/// Returns `Some` only for the first pod that claims `(community_id,
-/// workflow_id, scheduled_for)`. All other pods receive `None` and must skip
-/// creating a workflow run. The `scheduled_for` value must come from an external
+/// Returns `Some` only for the first pod that claims `(workflow_id,
+/// scheduled_for)`. All other pods receive `None` and must skip creating a
+/// workflow run. The `scheduled_for` value must come from an external
 /// schedule anchor (cron expression) or DB-authoritative interval anchor; a
 /// per-pod in-memory timestamp is not safe because different pods can compute
 /// different claim keys.
 pub async fn claim_scheduled_workflow_fire(
     pool: &PgPool,
-    community_id: CommunityId,
     workflow_id: Uuid,
     scheduled_for: DateTime<Utc>,
 ) -> Result<Option<ScheduledWorkflowFireClaim>> {
     let row = sqlx::query(
         r#"
         INSERT INTO scheduled_workflow_fires (community_id, workflow_id, scheduled_for)
-        VALUES ($1, $2, $3)
-        ON CONFLICT (community_id, workflow_id, scheduled_for) DO NOTHING
+        SELECT w.community_id, w.id, $2
+        FROM workflows w
+        WHERE w.id = $1
+        ON CONFLICT (workflow_id, scheduled_for) DO NOTHING
         RETURNING community_id, workflow_id, scheduled_for, claimed_at
         "#,
     )
-    .bind(community_id.as_uuid())
     .bind(workflow_id)
     .bind(scheduled_for)
     .fetch_optional(pool)
@@ -444,18 +448,15 @@ pub async fn claim_scheduled_workflow_fire(
 /// row is the source of truth for schedule deduplication.
 pub async fn latest_scheduled_workflow_fire(
     pool: &PgPool,
-    community_id: CommunityId,
     workflow_id: Uuid,
 ) -> Result<Option<DateTime<Utc>>> {
     let row = sqlx::query(
         r#"
         SELECT MAX(scheduled_for) AS scheduled_for
         FROM scheduled_workflow_fires
-        WHERE community_id = $1
-          AND workflow_id = $2
+        WHERE workflow_id = $1
         "#,
     )
-    .bind(community_id.as_uuid())
     .bind(workflow_id)
     .fetch_one(pool)
     .await?;
@@ -471,7 +472,6 @@ pub async fn latest_scheduled_workflow_fire(
 /// intentional: the schedule instant was claimed and must not duplicate later.
 pub async fn attach_scheduled_workflow_run(
     pool: &PgPool,
-    community_id: CommunityId,
     workflow_id: Uuid,
     scheduled_for: DateTime<Utc>,
     workflow_run_id: Uuid,
@@ -479,14 +479,12 @@ pub async fn attach_scheduled_workflow_run(
     let result = sqlx::query(
         r#"
         UPDATE scheduled_workflow_fires
-        SET workflow_run_id = $4
-        WHERE community_id = $1
-          AND workflow_id = $2
-          AND scheduled_for = $3
+        SET workflow_run_id = $3
+        WHERE workflow_id = $1
+          AND scheduled_for = $2
           AND workflow_run_id IS NULL
         "#,
     )
-    .bind(community_id.as_uuid())
     .bind(workflow_id)
     .bind(scheduled_for)
     .bind(workflow_run_id)
@@ -909,8 +907,11 @@ fn row_to_workflow_record(row: sqlx::postgres::PgRow) -> Result<WorkflowRecord>
 
     let enabled: bool = row.try_get("enabled")?;
 
+    let community_id: Uuid = row.try_get("community_id")?;
+
     Ok(WorkflowRecord {
         id,
+        community_id: CommunityId::from_uuid(community_id),
         name: row.try_get("name")?,
         owner_pubkey: row.try_get("owner_pubkey")?,
         channel_id,
@@ -975,7 +976,7 @@ pub async fn find_by_owner_and_name(
 ) -> Result<Option<WorkflowRecord>> {
     let row = sqlx::query(
         r#"
-        SELECT id, name, owner_pubkey, channel_id, definition, definition_hash,
+        SELECT id, community_id, name, owner_pubkey, channel_id, definition, definition_hash,
                status::text AS status, enabled, created_at, updated_at
         FROM workflows
         WHERE owner_pubkey = $1 AND name = $2
@@ -1099,8 +1100,11 @@ mod tests {
             "steps": [{ "id": "s1", "action": "send_message", "text": "hi" }]
         });
 
+        let community_id = CommunityId::from_uuid(Uuid::new_v4());
+
         let record = WorkflowRecord {
             id,
+            community_id,
             name: "My Workflow".to_owned(),
             owner_pubkey: vec![0xab; 32],
             channel_id: Some(channel_id),
@@ -1113,6 +1117,7 @@ mod tests {
         };
 
         assert_eq!(record.id, id);
+        assert_eq!(record.community_id, community_id);
         assert_eq!(record.name, "My Workflow");
         assert_eq!(record.owner_pubkey, vec![0xab; 32]);
         assert_eq!(record.channel_id, Some(channel_id));
@@ -1129,6 +1134,7 @@ mod tests {
 
         let record = WorkflowRecord {
             id,
+            community_id: CommunityId::from_uuid(Uuid::new_v4()),
             name: "Global Workflow".to_owned(),
             owner_pubkey: vec![0x00; 32],
             channel_id: None,
@@ -1150,6 +1156,7 @@ mod tests {
 
         let record = WorkflowRecord {
             id,
+            community_id: CommunityId::from_uuid(Uuid::new_v4()),
             name: "Original".to_owned(),
             owner_pubkey: vec![0x01; 32],
             channel_id: None,
@@ -1178,6 +1185,7 @@ mod tests {
         ] {
             let record = WorkflowRecord {
                 id: Uuid::new_v4(),
+                community_id: CommunityId::from_uuid(Uuid::new_v4()),
                 name: "Test".to_owned(),
                 owner_pubkey: vec![],
                 channel_id: None,
@@ -1197,6 +1205,7 @@ mod tests {
         let now = Utc::now();
         let record = WorkflowRecord {
             id: Uuid::new_v4(),
+            community_id: CommunityId::from_uuid(Uuid::new_v4()),
             name: "Paused".to_owned(),
             owner_pubkey: vec![],
             channel_id: None,

crates/buzz-relay/src/handlers/command_executor.rs

@@ -612,10 +612,20 @@ async fn handle_workflow_def(
         PersistResult::Inserted(tx) => tx,
     };
 
-    // 4. Execute: create_workflow
+    // 4. Execute: create_workflow. The workflow's community is resolved from
+    // the server-owned channel row, not from the client-supplied event. The DB
+    // also enforces `(community_id, channel_id)` as a composite FK.
+    let community_id = state
+        .db
+        .community_of_channel(channel_id)
+        .await
+        .map_err(|e| IngestError::Internal(format!("error: db channel community lookup: {e}")))?
+        .ok_or_else(|| IngestError::Rejected("invalid: workflow channel not found".into()))?;
+
     let workflow_id = state
         .db
         .create_workflow(
+            community_id,
             Some(channel_id),
             &self_bytes,
             &workflow_name,

migrations/0001_initial_schema.sql

@@ -58,6 +58,7 @@ CREATE TABLE channels (
     CONSTRAINT chk_channels_id_not_nil CHECK (id <> '00000000-0000-0000-0000-000000000000'::uuid)
 );
 
+CREATE UNIQUE INDEX idx_channels_community_id_id ON channels (community_id, id);
 CREATE INDEX idx_channels_type ON channels (channel_type);
 CREATE INDEX idx_channels_visibility ON channels (visibility);
 CREATE INDEX idx_channels_created_by ON channels (created_by);
@@ -210,18 +211,37 @@ CREATE TABLE delivery_log_p_future PARTITION OF delivery_log
 
 CREATE TABLE workflows (
     id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    community_id    UUID NOT NULL REFERENCES communities(id),
     name            VARCHAR(255) NOT NULL,
     owner_pubkey    BYTEA NOT NULL REFERENCES users(pubkey),
-    channel_id      UUID REFERENCES channels(id),
+    channel_id      UUID,
     definition      JSONB NOT NULL,
     definition_hash BYTEA NOT NULL,
     status          workflow_status NOT NULL DEFAULT 'active',
     enabled         BOOLEAN NOT NULL DEFAULT TRUE,
     created_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
-    updated_at      TIMESTAMPTZ NOT NULL DEFAULT NOW()
+    updated_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    FOREIGN KEY (community_id, channel_id)
+        REFERENCES channels(community_id, id)
 );
 
-CREATE INDEX idx_workflows_channel_active ON workflows (channel_id, status, enabled);
+CREATE UNIQUE INDEX idx_workflows_community_id_id ON workflows (community_id, id);
+CREATE INDEX idx_workflows_channel_active ON workflows (community_id, channel_id, status, enabled);
+
+CREATE OR REPLACE FUNCTION prevent_workflows_community_id_update()
+RETURNS trigger AS $$
+BEGIN
+    IF NEW.community_id IS DISTINCT FROM OLD.community_id THEN
+        RAISE EXCEPTION 'workflows.community_id is immutable';
+    END IF;
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER trg_workflows_community_id_immutable
+    BEFORE UPDATE OF community_id ON workflows
+    FOR EACH ROW
+    EXECUTE FUNCTION prevent_workflows_community_id_update();
 
 -- ── Workflow runs ─────────────────────────────────────────────────────────────
 
@@ -246,12 +266,14 @@ CREATE INDEX idx_workflow_runs_status ON workflow_runs (status);
 -- Each schedule tick must win this insert before creating a workflow run; this
 -- replaces per-pod in-memory last-fired state as the deduplication boundary.
 CREATE TABLE scheduled_workflow_fires (
-    community_id    UUID NOT NULL REFERENCES communities(id),
-    workflow_id     UUID NOT NULL REFERENCES workflows(id) ON DELETE CASCADE,
+    community_id    UUID NOT NULL,
+    workflow_id     UUID NOT NULL,
     scheduled_for   TIMESTAMPTZ NOT NULL,
     claimed_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
     workflow_run_id UUID REFERENCES workflow_runs(id) ON DELETE SET NULL,
-    PRIMARY KEY (community_id, workflow_id, scheduled_for)
+    PRIMARY KEY (workflow_id, scheduled_for),
+    FOREIGN KEY (community_id, workflow_id)
+        REFERENCES workflows(community_id, id) ON DELETE CASCADE
 );
 
 CREATE INDEX idx_scheduled_workflow_fires_scheduled_for

schema/schema.sql

@@ -59,6 +59,7 @@ CREATE TABLE channels (
     CONSTRAINT chk_channels_id_not_nil CHECK (id <> '00000000-0000-0000-0000-000000000000'::uuid)
 );
 
+CREATE UNIQUE INDEX idx_channels_community_id_id ON channels (community_id, id);
 CREATE INDEX idx_channels_type ON channels (channel_type);
 CREATE INDEX idx_channels_visibility ON channels (visibility);
 CREATE INDEX idx_channels_created_by ON channels (created_by);
@@ -215,18 +216,37 @@ CREATE TABLE delivery_log_p_future PARTITION OF delivery_log
 
 CREATE TABLE workflows (
     id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    community_id    UUID NOT NULL REFERENCES communities(id),
     name            VARCHAR(255) NOT NULL,
     owner_pubkey    BYTEA NOT NULL REFERENCES users(pubkey),
-    channel_id      UUID REFERENCES channels(id),
+    channel_id      UUID,
     definition      JSONB NOT NULL,
     definition_hash BYTEA NOT NULL,
     status          workflow_status NOT NULL DEFAULT 'active',
     enabled         BOOLEAN NOT NULL DEFAULT TRUE,
     created_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
-    updated_at      TIMESTAMPTZ NOT NULL DEFAULT NOW()
+    updated_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    FOREIGN KEY (community_id, channel_id)
+        REFERENCES channels(community_id, id)
 );
 
-CREATE INDEX idx_workflows_channel_active ON workflows (channel_id, status, enabled);
+CREATE UNIQUE INDEX idx_workflows_community_id_id ON workflows (community_id, id);
+CREATE INDEX idx_workflows_channel_active ON workflows (community_id, channel_id, status, enabled);
+
+CREATE OR REPLACE FUNCTION prevent_workflows_community_id_update()
+RETURNS trigger AS $$
+BEGIN
+    IF NEW.community_id IS DISTINCT FROM OLD.community_id THEN
+        RAISE EXCEPTION 'workflows.community_id is immutable';
+    END IF;
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER trg_workflows_community_id_immutable
+    BEFORE UPDATE OF community_id ON workflows
+    FOR EACH ROW
+    EXECUTE FUNCTION prevent_workflows_community_id_update();
 
 -- ── Workflow runs ─────────────────────────────────────────────────────────────
 
@@ -251,12 +271,14 @@ CREATE INDEX idx_workflow_runs_status ON workflow_runs (status);
 -- Each schedule tick must win this insert before creating a workflow run; this
 -- replaces per-pod in-memory last-fired state as the deduplication boundary.
 CREATE TABLE scheduled_workflow_fires (
-    community_id    UUID NOT NULL REFERENCES communities(id),
-    workflow_id     UUID NOT NULL REFERENCES workflows(id) ON DELETE CASCADE,
+    community_id    UUID NOT NULL,
+    workflow_id     UUID NOT NULL,
     scheduled_for   TIMESTAMPTZ NOT NULL,
     claimed_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
     workflow_run_id UUID REFERENCES workflow_runs(id) ON DELETE SET NULL,
-    PRIMARY KEY (community_id, workflow_id, scheduled_for)
+    PRIMARY KEY (workflow_id, scheduled_for),
+    FOREIGN KEY (community_id, workflow_id)
+        REFERENCES workflows(community_id, id) ON DELETE CASCADE
 );
 
 CREATE INDEX idx_scheduled_workflow_fires_scheduled_for