first steps towards multiple hosts -- schema & heartbeat

capsulflask/schema_migrations/09_down_introduce_hosts.sql

@@ -0,0 +1,11 @@
+
+DROP TABLE host_operation;
+
+DROP TABLE operations;
+
+ALTER TABLE vms DROP COLUMN host;
+
+DROP TABLE hosts;
+
+
+UPDATE schemaversion SET version = 8;

capsulflask/schema_migrations/09_up_introduce_hosts.sql

@@ -0,0 +1,33 @@
+
+
+CREATE TABLE hosts (
+  id                 TEXT PRIMARY KEY NOT NULL,
+  last_health_check  TIMESTAMP NOT NULL DEFAULT NOW(),
+  token              TEXT NOT NULL
+);
+
+INSERT INTO hosts (id, token) VALUES ('baikal', 'changeme');
+
+ALTER TABLE vms 
+ADD COLUMN host TEXT REFERENCES hosts(id) ON DELETE RESTRICT DEFAULT 'baikal';
+
+CREATE TABLE operations (
+  id                 TEXT PRIMARY KEY NOT NULL,
+  email              TEXT REFERENCES accounts(email) ON DELETE RESTRICT,
+  assigned_host      TEXT NULL,
+  host_status        TEXT NULL,
+  created            TIMESTAMP NOT NULL DEFAULT NOW(),
+  assigned           TIMESTAMP NULL,
+  completed          TIMESTAMP NULL,
+  payload            TEXT NOT NULL,
+);
+
+CREATE TABLE host_operation (
+  host        TEXT NOT NULL,
+  operation   TEXT NOT NULL,
+  assignment_status TEXT NULL,
+  assignment_status_timestamp  TIMESTAMP,
+  PRIMARY KEY (host, operation)
+);
+
+UPDATE schemaversion SET version = 9;