postgres_schemas: Add rules for cascading deletes

Add cascading deletes to foreign keys as well as a rule to delete large
objects when artifacts are deleted.

Deleting a run entry should delete all dependent data of that run.

wa/commands/postgres_schemas/postgres_schema.sql

@@ -1,4 +1,4 @@
---!VERSION!1.5!ENDVERSION!
+--!VERSION!1.6!ENDVERSION!
 CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
 CREATE EXTENSION IF NOT EXISTS "lo";
 
@@ -61,7 +61,7 @@ CREATE TABLE Runs (
 
 CREATE TABLE Jobs (
     oid uuid NOT NULL,
-    run_oid uuid NOT NULL references Runs(oid),
+    run_oid uuid NOT NULL references Runs(oid) ON DELETE CASCADE,
     status status_enum,
     retry int,
     label text,
@@ -76,7 +76,7 @@ CREATE TABLE Jobs (
 
 CREATE TABLE Targets (
     oid uuid NOT NULL,
-    run_oid uuid NOT NULL references Runs(oid),
+    run_oid uuid NOT NULL references Runs(oid) ON DELETE CASCADE,
     target text,
     modules text[],
     cpus text[],
@@ -103,7 +103,7 @@ CREATE TABLE Targets (
 
 CREATE TABLE Events (
     oid uuid NOT NULL,
-    run_oid uuid NOT NULL references Runs(oid),
+    run_oid uuid NOT NULL references Runs(oid) ON DELETE CASCADE,
     job_oid uuid references Jobs(oid),
     timestamp timestamp,
     message text,
@@ -114,28 +114,28 @@ CREATE TABLE Events (
 
 CREATE TABLE Resource_Getters (
     oid uuid NOT NULL,
-    run_oid uuid NOT NULL references Runs(oid),
+    run_oid uuid NOT NULL references Runs(oid) ON DELETE CASCADE,
     name text,
     PRIMARY KEY (oid)
 );
 
 CREATE TABLE Augmentations (
     oid uuid NOT NULL,
-    run_oid uuid NOT NULL references Runs(oid),
+    run_oid uuid NOT NULL references Runs(oid) ON DELETE CASCADE,
     name text,
     PRIMARY KEY (oid)
 );
 
 CREATE TABLE Jobs_Augs (
     oid uuid NOT NULL,
-    job_oid uuid NOT NULL references Jobs(oid),
+    job_oid uuid NOT NULL references Jobs(oid) ON DELETE CASCADE,
-    augmentation_oid uuid NOT NULL references Augmentations(oid),
+    augmentation_oid uuid NOT NULL references Augmentations(oid) ON DELETE CASCADE,
     PRIMARY KEY (oid)
 );
 
 CREATE TABLE Metrics (
     oid uuid NOT NULL,
-    run_oid uuid NOT NULL references Runs(oid),
+    run_oid uuid NOT NULL references Runs(oid) ON DELETE CASCADE,
     job_oid uuid references Jobs(oid),
     name text,
     value double precision,
@@ -158,7 +158,7 @@ CREATE TRIGGER t_raster BEFORE UPDATE OR DELETE ON LargeObjects
 
 CREATE TABLE Artifacts (
     oid uuid NOT NULL,
-    run_oid uuid NOT NULL references Runs(oid),
+    run_oid uuid NOT NULL references Runs(oid) ON DELETE CASCADE,
     job_oid uuid references Jobs(oid),
     name text,
     large_object_uuid uuid NOT NULL references LargeObjects(oid),
@@ -170,12 +170,18 @@ CREATE TABLE Artifacts (
     PRIMARY KEY (oid)
 );
 
+CREATE RULE del_lo AS
+    ON DELETE TO Artifacts
+    DO DELETE FROM LargeObjects
+        WHERE LargeObjects.oid = old.large_object_uuid
+;
+
 CREATE TABLE Classifiers (
     oid uuid NOT NULL,
-    artifact_oid uuid references Artifacts(oid),
+    artifact_oid uuid references Artifacts(oid) ON DELETE CASCADE,
-    metric_oid uuid references Metrics(oid),
+    metric_oid uuid references Metrics(oid) ON DELETE CASCADE,
-    job_oid uuid references Jobs(oid),
+    job_oid uuid references Jobs(oid) ON DELETE CASCADE,
-    run_oid uuid references Runs(oid),
+    run_oid uuid references Runs(oid) ON DELETE CASCADE,
     key text,
     value text,
     PRIMARY KEY (oid)
@@ -183,7 +189,7 @@ CREATE TABLE Classifiers (
 
 CREATE TABLE Parameters (
     oid uuid NOT NULL,
-    run_oid uuid NOT NULL references Runs(oid),
+    run_oid uuid NOT NULL references Runs(oid) ON DELETE CASCADE,
     job_oid uuid references Jobs(oid),
     augmentation_oid uuid references Augmentations(oid),
     resource_getter_oid uuid references Resource_Getters(oid),

wa/commands/postgres_schemas/postgres_schema_update_v1.6.sql

@@ -0,0 +1,109 @@
+ALTER TABLE jobs
+    DROP CONSTRAINT jobs_run_oid_fkey,
+    ADD CONSTRAINT jobs_run_oid_fkey
+        FOREIGN KEY (run_oid)
+        REFERENCES runs(oid)
+        ON DELETE CASCADE
+;
+
+ALTER TABLE targets
+    DROP CONSTRAINT targets_run_oid_fkey,
+    ADD CONSTRAINT targets_run_oid_fkey
+        FOREIGN KEY (run_oid)
+        REFERENCES runs(oid)
+        ON DELETE CASCADE
+;
+
+ALTER TABLE events
+    DROP CONSTRAINT events_run_oid_fkey,
+    ADD CONSTRAINT events_run_oid_fkey
+        FOREIGN KEY (run_oid)
+        REFERENCES runs(oid)
+        ON DELETE CASCADE
+;
+
+ALTER TABLE resource_getters
+    DROP CONSTRAINT resource_getters_run_oid_fkey,
+    ADD CONSTRAINT resource_getters_run_oid_fkey
+        FOREIGN KEY (run_oid)
+        REFERENCES runs(oid)
+        ON DELETE CASCADE
+;
+
+ALTER TABLE augmentations
+    DROP CONSTRAINT augmentations_run_oid_fkey,
+    ADD CONSTRAINT augmentations_run_oid_fkey
+        FOREIGN KEY (run_oid)
+        REFERENCES runs(oid)
+        ON DELETE CASCADE
+;
+
+ALTER TABLE jobs_augs
+    DROP CONSTRAINT jobs_augs_job_oid_fkey,
+    DROP CONSTRAINT jobs_augs_augmentation_oid_fkey,
+    ADD CONSTRAINT jobs_augs_job_oid_fkey
+        FOREIGN KEY (job_oid)
+        REFERENCES Jobs(oid)
+        ON DELETE CASCADE,
+    ADD CONSTRAINT jobs_augs_augmentation_oid_fkey
+        FOREIGN KEY (augmentation_oid)
+        REFERENCES Augmentations(oid)
+        ON DELETE CASCADE
+;
+
+ALTER TABLE metrics
+    DROP CONSTRAINT metrics_run_oid_fkey,
+    ADD CONSTRAINT metrics_run_oid_fkey
+        FOREIGN KEY (run_oid)
+        REFERENCES runs(oid)
+        ON DELETE CASCADE
+;
+
+ALTER TABLE artifacts
+    DROP CONSTRAINT artifacts_run_oid_fkey,
+    ADD CONSTRAINT artifacts_run_oid_fkey
+        FOREIGN KEY (run_oid)
+        REFERENCES runs(oid)
+        ON DELETE CASCADE
+;
+
+CREATE RULE del_lo AS
+    ON DELETE TO Artifacts
+    DO DELETE FROM LargeObjects
+        WHERE LargeObjects.oid = old.large_object_uuid
+;
+
+ALTER TABLE classifiers
+    DROP CONSTRAINT classifiers_artifact_oid_fkey,
+    DROP CONSTRAINT classifiers_metric_oid_fkey,
+    DROP CONSTRAINT classifiers_job_oid_fkey,
+    DROP CONSTRAINT classifiers_run_oid_fkey,
+
+    ADD CONSTRAINT classifiers_artifact_oid_fkey
+        FOREIGN KEY (artifact_oid)
+        REFERENCES artifacts(oid)
+        ON DELETE CASCADE,
+
+    ADD CONSTRAINT classifiers_metric_oid_fkey
+        FOREIGN KEY (metric_oid)
+        REFERENCES metrics(oid)
+        ON DELETE CASCADE,
+
+    ADD CONSTRAINT classifiers_job_oid_fkey
+        FOREIGN KEY (job_oid)
+        REFERENCES jobs(oid)
+        ON DELETE CASCADE,
+
+    ADD CONSTRAINT classifiers_run_oid_fkey
+        FOREIGN KEY (run_oid)
+        REFERENCES runs(oid)
+        ON DELETE CASCADE
+;
+
+ALTER TABLE parameters
+    DROP CONSTRAINT parameters_run_oid_fkey,
+    ADD CONSTRAINT parameters_run_oid_fkey
+        FOREIGN KEY (run_oid)
+        REFERENCES runs(oid)
+        ON DELETE CASCADE
+;

wa/commands/schema_changelog.rst

@@ -22,3 +22,7 @@
   during the run.
 ## 1.5
 - Change the type of the "hostid" in TargetInfo from Int to Bigint.
+## 1.6
+- Add cascading deletes to most tables to allow easy deletion of a run
+  and its associated data
+- Add rule to delete associated large object on deletion of artifact