Add database schema

Author: DOBEN

backend-rust/README.md

@@ -55,9 +55,9 @@ cargo run --bin ccdscan-api
 ### GraphiQL IDE
 
 Starting the GraphQL API Service above will provide you an interface
-(usually at 127.0.0.1:8000) to execute graphQL querries.
+(usually at 127.0.0.1:8000) to execute graphQL queries.
 
-An examples is shown below:
+An example is shown below:
 
 Query:
 

backend-rust/migrations/0001_initialize.up.sql

@@ -158,6 +158,7 @@ CREATE TABLE transactions(
         BOOLEAN
         NOT NULL,
     -- Transaction details. Events if success is true.
+    -- TODO: It would be nice to have every event in a separate row in a table to easily query a specific event from a specific transaction.
     events
         JSONB,
     -- Transaction details. Reject reason if success is false.
@@ -249,6 +250,7 @@ CREATE TABLE bakers(
 
 -- Every WASM module on chain.
 CREATE TABLE smart_contract_modules(
+    -- Index/id of the module (row number).
     index
         BIGINT
         PRIMARY KEY,
@@ -305,6 +307,100 @@ CREATE TABLE contracts(
     PRIMARY KEY (index, sub_index)
 );
 
+-- Every event that links or unlinks a contract to a module.
+CREATE TABLE module_contract_link_events(
+    -- An index/id for this event (row number).
+    index
+        BIGINT
+        SERIAL
+        PRIMARY KEY
+        NOT NULL,
+    -- Event index of the event.
+    event_index
+        BIGINT
+        NOT NULL,
+    -- Transaction index including the event.
+    transaction_index
+        BIGINT
+        NOT NULL,
+    -- Module index that gets linked/unlinked.
+    module_index
+        BIGINT
+        NOT NULL,
+    -- Contract index that gets linked/unlinked.
+    contract_index
+        BIGINT
+        NOT NULL,
+    -- Contract subindex that gets linked/unlinked.
+    contract_sub_index
+        BIGINT
+        NOT NULL,
+    -- True if contract gets linked to the given module, false if contract gets unlinked to the given module.
+    is_linked
+        BOOLEAN
+        NOT NULL,
+
+    -- TODO: link_action = int? source = int?
+)
+
+-- Every successful event associated to a contract.
+-- TODO: add index over the contract (index,subindex)
+CREATE TABLE contract_events(
+    -- An index/id for this event (row number).
+    index
+        BIGINT
+        SERIAL
+        PRIMARY KEY
+        NOT NULL,
+    -- Transaction index including the event.
+    transaction_index
+        BIGINT
+        NOT NULL,
+    -- Event index of the event.
+    event_index
+        BIGINT
+        NOT NULL,
+    -- Contract index that event is associated with.
+    contract_index
+        BIGINT
+        NOT NULL,
+    -- Contract subindex that event is associated with.
+    contract_sub_index
+        BIGINT
+        NOT NULL,
+
+    -- TODO: source = int?
+)
+
+-- Every rejected event associated to a contract.
+-- TODO: add index over the contract (index,subindex)
+CREATE TABLE contract_reject_events(
+    -- An index/id for this event (row number).
+    index
+        BIGINT
+        SERIAL
+        PRIMARY KEY
+        NOT NULL,
+    -- Transaction index including the event.
+    transaction_index
+        BIGINT
+        NOT NULL,
+    -- Event index of the event.
+    event_index
+        BIGINT
+        NOT NULL,
+    -- Contract index that event is associated with.
+    contract_index
+        BIGINT
+        NOT NULL,
+    -- Contract subindex that event is associated with.
+    contract_sub_index
+        BIGINT
+        NOT NULL,
+
+    -- TODO: source = int?
+)
+
 CREATE OR REPLACE FUNCTION block_added_notify_trigger_function() RETURNS trigger AS $trigger$
 DECLARE
   rec blocks;