mirror of
https://github.com/hasura/graphql-engine.git
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e32f5a1fb1
1. Haskel library `pg-client-hs` has been updated to expose a function that helps listen to `postgres` notifications over a `channel` in this [PR](https://github.com/hasura/pg-client-hs/pull/5) 2. The server records an event in a table `hdb_catalog.hdb_cache_update_event` whenever any `/v1/query` (that changes metadata) is requested. A trigger notifies a `cache update` event via `hasura_cache_update` channel 3. The server runs two concurrent threads namely `listener` and `processor`. The `listener` thread listens to events on `hasura_cache_update` channel and pushed into a `Queue`. The `processor` thread fetches events from that `Queue` and processes it. Thus server rebuilds schema cache from database and updates.
94 lines
2.0 KiB
YAML
94 lines
2.0 KiB
YAML
-
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operation:
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server: '1'
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query:
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type: bulk
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args:
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- type: run_sql
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args:
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sql: |
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create table test_t1(
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t1_c1 int,
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t1_c2 text,
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PRIMARY KEY (t1_c1)
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);
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- type: track_table
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args:
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schema: public
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name: test_t1
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- type: run_sql
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args:
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sql: |
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insert into test_t1(t1_c1, t1_c2) VALUES(1, 'table1');
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validate:
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server: '2'
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response:
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data:
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test_t1:
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- t1_c1: 1
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t1_c2: table1
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query:
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query: |
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query {
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test_t1 {
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t1_c1
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t1_c2
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}
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}
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-
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operation:
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server: '2'
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query:
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type: bulk
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args:
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- type: run_sql
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args:
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sql: |
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create table test_t2(
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t2_c1 int,
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t2_c2 text,
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PRIMARY KEY (t2_c1)
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);
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- type: run_sql
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args:
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sql: |
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ALTER TABLE test_t2 ADD FOREIGN KEY (t2_c1) REFERENCES test_t1 (t1_c1);
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- type: track_table
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args:
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schema: public
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name: test_t2
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- type: create_object_relationship
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args:
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name: testT1Byc1
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table:
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name: test_t2
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schema: public
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using:
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foreign_key_constraint_on: t2_c1
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- type: run_sql
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args:
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sql: |
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insert into test_t2(t2_c1, t2_c2) VALUES(1, 'table2');
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validate:
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server: '1'
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query:
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query: |
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query {
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test_t2 {
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t2_c1
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t2_c2
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testT1Byc1 {
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t1_c1
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t1_c2
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}
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}
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}
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response:
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data:
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test_t2:
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- t2_c1: 1
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t2_c2: table2
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testT1Byc1:
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t1_c1: 1
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t1_c2: table1
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