store: Change the primary key on subgraph_deployment

Make 'id' the primary key on subgraph_deployment so that entries there are
identified with the same id as entries in deployment_schemas

store/postgres/migrations/2021-03-12-014815_subgraph_deployment_pkey/down.sql

@@ -0,0 +1,5 @@
+do $$
+begin
+  raise 'This migration is irreversible';
+end
+$$;

store/postgres/migrations/2021-03-12-014815_subgraph_deployment_pkey/up.sql

@@ -0,0 +1,14 @@
+update subgraphs.subgraph_deployment d
+   set id = ds.id
+  from deployment_schemas ds
+ where ds.subgraph = d.deployment
+   and d.id is null;
+
+alter table subgraphs.subgraph_deployment
+      drop constraint subgraph_deployment_pkey;
+
+alter table subgraphs.subgraph_deployment
+      add primary key(id);
+
+alter table subgraphs.subgraph_deployment
+      drop column vid;

store/postgres/src/deployment.rs

@@ -4,7 +4,7 @@
 use diesel::{
     connection::SimpleConnection,
     dsl::{delete, insert_into, select, sql, update},
-    sql_types::{Integer, Text},
+    sql_types::Integer,
 };
 use diesel::{expression::SqlLiteral, pg::PgConnection, sql_types::Numeric};
 use diesel::{
@@ -48,8 +48,7 @@ impl From<SubgraphHealth> for graph::data::subgraph::schema::SubgraphHealth {
 }
 
 table! {
-    subgraphs.subgraph_deployment (vid) {
-        vid -> BigInt,
+    subgraphs.subgraph_deployment (id) {
         id -> Integer,
         deployment -> Text,
         manifest -> Text,
@@ -738,13 +737,13 @@ pub fn update_entity_count(
            set entity_count =
                  coalesce((nullif(entity_count, -1)) + $1,
                           ({full_count_query}))
-         where deployment = $2
+         where id = $2
         ",
         full_count_query = full_count_query
     );
     Ok(diesel::sql_query(query)
         .bind::<Integer, _>(count)
-        .bind::<Text, _>(site.deployment.as_str())
+        .bind::<Integer, _>(site.id)
         .execute(conn)
         .map(|_| ())?)
 }

store/postgres/src/detail.rs

@@ -25,7 +25,6 @@ type Bytes = Vec<u8>;
 // don't need all the fields
 #[allow(dead_code)]
 pub struct DeploymentDetail {
-    vid: i64,
     id: i32,
     pub deployment: String,
     manifest: String,