Write event logs to database before transforming

- enables decoupling event extraction/persistence from transformation
- modifies event transformer, converter, and log chunker to accept
  payload that includes internal log database ID with log data
- remove alias for transformer pkg as shared_t
- remove unused mock watcher repository

db/migrations/00029_create_header_sync_logs_table.sql

@@ -0,0 +1,21 @@
+-- +goose Up
+-- SQL in this section is executed when the migration is applied.
+CREATE TABLE header_sync_logs
+(
+    id           SERIAL PRIMARY KEY,
+    header_id    INTEGER NOT NULL REFERENCES headers (id) ON DELETE CASCADE,
+    address      VARCHAR(66),
+    topics       BYTEA[],
+    data         BYTEA,
+    block_number BIGINT,
+    block_hash   VARCHAR(66),
+    tx_hash      VARCHAR(66),
+    tx_index     INTEGER,
+    log_index    INTEGER,
+    raw          JSONB,
+    UNIQUE (header_id, tx_index, log_index)
+);
+
+-- +goose Down
+-- SQL in this section is executed when the migration is rolled back.
+DROP TABLE header_sync_logs;

db/schema.sql

@@ -296,6 +296,45 @@ CREATE SEQUENCE public.goose_db_version_id_seq
 ALTER SEQUENCE public.goose_db_version_id_seq OWNED BY public.goose_db_version.id;
 
 
+--
+-- Name: header_sync_logs; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE public.header_sync_logs (
+    id integer NOT NULL,
+    header_id integer NOT NULL,
+    address character varying(66),
+    topics bytea[],
+    data bytea,
+    block_number bigint,
+    block_hash character varying(66),
+    tx_hash character varying(66),
+    tx_index integer,
+    log_index integer,
+    raw jsonb
+);
+
+
+--
+-- Name: header_sync_logs_id_seq; Type: SEQUENCE; Schema: public; Owner: -
+--
+
+CREATE SEQUENCE public.header_sync_logs_id_seq
+    AS integer
+    START WITH 1
+    INCREMENT BY 1
+    NO MINVALUE
+    NO MAXVALUE
+    CACHE 1;
+
+
+--
+-- Name: header_sync_logs_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
+--
+
+ALTER SEQUENCE public.header_sync_logs_id_seq OWNED BY public.header_sync_logs.id;
+
+
 --
 -- Name: header_sync_receipts; Type: TABLE; Schema: public; Owner: -
 --
@@ -650,6 +689,13 @@ ALTER TABLE ONLY public.full_sync_transactions ALTER COLUMN id SET DEFAULT nextv
 ALTER TABLE ONLY public.goose_db_version ALTER COLUMN id SET DEFAULT nextval('public.goose_db_version_id_seq'::regclass);
 
 
+--
+-- Name: header_sync_logs id; Type: DEFAULT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY public.header_sync_logs ALTER COLUMN id SET DEFAULT nextval('public.header_sync_logs_id_seq'::regclass);
+
+
 --
 -- Name: header_sync_receipts id; Type: DEFAULT; Schema: public; Owner: -
 --
@@ -787,6 +833,22 @@ ALTER TABLE ONLY public.goose_db_version
     ADD CONSTRAINT goose_db_version_pkey PRIMARY KEY (id);
 
 
+--
+-- Name: header_sync_logs header_sync_logs_header_id_tx_index_log_index_key; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY public.header_sync_logs
+    ADD CONSTRAINT header_sync_logs_header_id_tx_index_log_index_key UNIQUE (header_id, tx_index, log_index);
+
+
+--
+-- Name: header_sync_logs header_sync_logs_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY public.header_sync_logs
+    ADD CONSTRAINT header_sync_logs_pkey PRIMARY KEY (id);
+
+
 --
 -- Name: header_sync_receipts header_sync_receipts_header_id_transaction_id_key; Type: CONSTRAINT; Schema: public; Owner: -
 --
@@ -965,6 +1027,14 @@ ALTER TABLE ONLY public.full_sync_transactions
     ADD CONSTRAINT full_sync_transactions_block_id_fkey FOREIGN KEY (block_id) REFERENCES public.blocks(id) ON DELETE CASCADE;
 
 
+--
+-- Name: header_sync_logs header_sync_logs_header_id_fkey; Type: FK CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY public.header_sync_logs
+    ADD CONSTRAINT header_sync_logs_header_id_fkey FOREIGN KEY (header_id) REFERENCES public.headers(id) ON DELETE CASCADE;
+
+
 --
 -- Name: header_sync_receipts header_sync_receipts_contract_address_id_fkey; Type: FK CONSTRAINT; Schema: public; Owner: -
 --