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Add Filters (#133)

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* Add LogFilter struct

* Add log_filters table

* Add view for events watching

* Add cmd line "add_filter" to mimic eventual endpoint

* Allow multiple filters in config
This commit is contained in:
Matt K
2018-01-23 12:43:35 -06:00
committed by GitHub
parent 3f06c7374b
commit c00b8a5a98
19 changed files with 514 additions and 26 deletions
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db/migrations/1516648743_add_log_filters.down.sql
+1
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@@ -0,0 +1 @@
DROP TABLE log_filters;
db/migrations/1516648743_add_log_filters.up.sql
+12
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@@ -0,0 +1,12 @@
CREATE TABLE log_filters (
id SERIAL,
name VARCHAR NOT NULL CHECK (name <> ''),
from_block BIGINT CHECK (from_block >= 0),
to_block BIGINT CHECK (from_block >= 0),
address VARCHAR(66),
topic0 VARCHAR(66),
topic1 VARCHAR(66),
topic2 VARCHAR(66),
topic3 VARCHAR(66),
CONSTRAINT name_uc UNIQUE (name)
);
db/migrations/1516653373_add_watched_event_logs.down.sql
+1
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@@ -0,0 +1 @@
DROP VIEW watched_event_logs;
db/migrations/1516653373_add_watched_event_logs.up.sql
+29
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@@ -0,0 +1,29 @@
CREATE VIEW block_stats AS
SELECT
max(block_number) AS max_block,
min(block_number) AS min_block
FROM logs;
CREATE VIEW watched_event_logs AS
SELECT
log_filters.name,
logs.id,
block_number,
logs.address,
tx_hash,
index,
logs.topic0,
logs.topic1,
logs.topic2,
logs.topic3,
data,
receipt_id
FROM log_filters
CROSS JOIN block_stats
JOIN logs ON logs.address = log_filters.address
AND logs.block_number >= coalesce(log_filters.from_block, block_stats.min_block)
AND logs.block_number <= coalesce(log_filters.to_block, block_stats.max_block)
WHERE (log_filters.topic0 = logs.topic0 OR log_filters.topic0 ISNULL)
AND (log_filters.topic1 = logs.topic1 OR log_filters.topic1 ISNULL)
AND (log_filters.topic2 = logs.topic2 OR log_filters.topic2 ISNULL)
AND (log_filters.topic3 = logs.topic3 OR log_filters.topic3 ISNULL);
db/schema.sql
+95 -7
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@@ -34,6 +34,35 @@ SET default_tablespace = '';
SET default_with_oids = false;
--
-- Name: logs; Type: TABLE; Schema: public; Owner: -
--
CREATE TABLE logs (
id integer NOT NULL,
block_number bigint,
address character varying(66),
tx_hash character varying(66),
index bigint,
topic0 character varying(66),
topic1 character varying(66),
topic2 character varying(66),
topic3 character varying(66),
data text,
receipt_id integer
);
--
-- Name: block_stats; Type: VIEW; Schema: public; Owner: -
--
CREATE VIEW block_stats AS
SELECT max(logs.block_number) AS max_block,
min(logs.block_number) AS min_block
FROM logs;
--
-- Name: blocks; Type: TABLE; Schema: public; Owner: -
--
@@ -80,24 +109,45 @@ ALTER SEQUENCE blocks_id_seq OWNED BY blocks.id;
--
-- Name: logs; Type: TABLE; Schema: public; Owner: -
-- Name: log_filters; Type: TABLE; Schema: public; Owner: -
--
CREATE TABLE logs (
CREATE TABLE log_filters (
id integer NOT NULL,
block_number bigint,
name character varying NOT NULL,
from_block bigint,
to_block bigint,
address character varying(66),
tx_hash character varying(66),
index bigint,
topic0 character varying(66),
topic1 character varying(66),
topic2 character varying(66),
topic3 character varying(66),
data text,
receipt_id integer
CONSTRAINT log_filters_from_block_check CHECK ((from_block >= 0)),
CONSTRAINT log_filters_from_block_check1 CHECK ((from_block >= 0)),
CONSTRAINT log_filters_name_check CHECK (((name)::text <> ''::text))
);
--
-- Name: log_filters_id_seq; Type: SEQUENCE; Schema: public; Owner: -
--
CREATE SEQUENCE log_filters_id_seq
AS integer
START WITH 1
INCREMENT BY 1
NO MINVALUE
NO MAXVALUE
CACHE 1;
--
-- Name: log_filters_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
--
ALTER SEQUENCE log_filters_id_seq OWNED BY log_filters.id;
--
-- Name: logs_id_seq; Type: SEQUENCE; Schema: public; Owner: -
--
@@ -266,6 +316,29 @@ CREATE SEQUENCE watched_contracts_contract_id_seq
ALTER SEQUENCE watched_contracts_contract_id_seq OWNED BY watched_contracts.contract_id;
--
-- Name: watched_event_logs; Type: VIEW; Schema: public; Owner: -
--
CREATE VIEW watched_event_logs AS
SELECT log_filters.name,
logs.id,
logs.block_number,
logs.address,
logs.tx_hash,
logs.index,
logs.topic0,
logs.topic1,
logs.topic2,
logs.topic3,
logs.data,
logs.receipt_id
FROM ((log_filters
CROSS JOIN block_stats)
JOIN logs ON ((((logs.address)::text = (log_filters.address)::text) AND (logs.block_number >= COALESCE(log_filters.from_block, block_stats.min_block)) AND (logs.block_number <= COALESCE(log_filters.to_block, block_stats.max_block)))))
WHERE ((((log_filters.topic0)::text = (logs.topic0)::text) OR (log_filters.topic0 IS NULL)) AND (((log_filters.topic1)::text = (logs.topic1)::text) OR (log_filters.topic1 IS NULL)) AND (((log_filters.topic2)::text = (logs.topic2)::text) OR (log_filters.topic2 IS NULL)) AND (((log_filters.topic3)::text = (logs.topic3)::text) OR (log_filters.topic3 IS NULL)));
--
-- Name: blocks id; Type: DEFAULT; Schema: public; Owner: -
--
@@ -273,6 +346,13 @@ ALTER SEQUENCE watched_contracts_contract_id_seq OWNED BY watched_contracts.cont
ALTER TABLE ONLY blocks ALTER COLUMN id SET DEFAULT nextval('blocks_id_seq'::regclass);
--
-- Name: log_filters id; Type: DEFAULT; Schema: public; Owner: -
--
ALTER TABLE ONLY log_filters ALTER COLUMN id SET DEFAULT nextval('log_filters_id_seq'::regclass);
--
-- Name: logs id; Type: DEFAULT; Schema: public; Owner: -
--
@@ -332,6 +412,14 @@ ALTER TABLE ONLY logs
ADD CONSTRAINT logs_pkey PRIMARY KEY (id);
--
-- Name: log_filters name_uc; Type: CONSTRAINT; Schema: public; Owner: -
--
ALTER TABLE ONLY log_filters
ADD CONSTRAINT name_uc UNIQUE (name);
--
-- Name: blocks node_id_block_number_uc; Type: CONSTRAINT; Schema: public; Owner: -
--