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postgsail/initdb/02_1_signalk_api.sql

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---------------------------------------------------------------------------
-- PostgSail => Postgres + TimescaleDB + PostGIS + PostgREST
--
-- Inspired from:
-- https://groups.google.com/g/signalk/c/W2H15ODCic4
--
-- Description:
-- Insert data into table metadata from API using PostgREST
-- Insert data into table metrics from API using PostgREST
-- TimescaleDB Hypertable to store signalk metrics
-- pgsql functions to generate logbook, stays, moorages
-- CRON functions to process logbook, stays, moorages
-- python functions for geo reverse and send notification via email and/or pushover
-- Views statistics, timelapse, monitoring, logs
-- Always store time in UTC
---------------------------------------------------------------------------
-- vessels signalk -(POST)-> metadata -> metadata_upsert -(trigger)-> metadata_upsert_trigger_fn (INSERT or UPDATE)
-- vessels signalk -(POST)-> metrics -> metrics -(trigger)-> metrics_fn new log,stay,moorage
---------------------------------------------------------------------------
-- Drop database
-- % docker exec -i timescaledb-postgis psql -Uusername -W postgres -c "drop database signalk;"
-- Import Schema
-- % cat signalk.sql | docker exec -i timescaledb-postgis psql -Uusername postgres
-- Export hypertable
-- % docker exec -i timescaledb-postgis psql -Uusername -W signalk -c "\COPY (SELECT * FROM api.metrics ORDER BY time ASC) TO '/var/lib/postgresql/data/metrics.csv' DELIMITER ',' CSV"
-- Export hypertable to gzip
-- # docker exec -i timescaledb-postgis psql -Uusername -W signalk -c "\COPY (SELECT * FROM api.metrics ORDER BY time ASC) TO PROGRAM 'gzip > /var/lib/postgresql/data/metrics.csv.gz' CSV HEADER;"
DO $$
BEGIN
RAISE WARNING '
_________.__ .__ ____ __.
/ _____/|__| ____ ____ _____ | | | |/ _|
\_____ \ | |/ ___\ / \\__ \ | | | <
/ \| / /_/ > | \/ __ \| |_| | \
/_______ /|__\___ /|___| (____ /____/____|__ \
\/ /_____/ \/ \/ \/
%', now();
END $$;
select version();
-- Database
CREATE DATABASE signalk;
-- Limit connection to 100
ALTER DATABASE signalk WITH CONNECTION LIMIT = 100;
-- Set timezone to UTC
ALTER DATABASE signalk SET TIMEZONE='UTC';
-- connext to the DB
\c signalk
-- Schema
CREATE SCHEMA IF NOT EXISTS api;
COMMENT ON SCHEMA api IS 'api schema expose to postgrest';
-- Revoke default privileges to all public functions
ALTER DEFAULT PRIVILEGES REVOKE EXECUTE ON FUNCTIONS FROM PUBLIC;
-- Extensions
CREATE EXTENSION IF NOT EXISTS timescaledb; -- provides time series functions for PostgreSQL
-- CREATE EXTENSION IF NOT EXISTS timescaledb_toolkit; -- provides time series functions for PostgreSQL
CREATE EXTENSION IF NOT EXISTS postgis; -- adds support for geographic objects to the PostgreSQL object-relational database
CREATE EXTENSION IF NOT EXISTS plpgsql; -- PL/pgSQL procedural language
CREATE EXTENSION IF NOT EXISTS plpython3u; -- implements PL/Python based on the Python 3 language variant.
CREATE EXTENSION IF NOT EXISTS jsonb_plpython3u CASCADE; -- tranform jsonb to python json type.
CREATE EXTENSION IF NOT EXISTS pg_stat_statements; -- provides a means for tracking planning and execution statistics of all SQL statements executed
CREATE EXTENSION IF NOT EXISTS "moddatetime"; -- provides functions for tracking last modification time
-- Trust plpython3u language by default
UPDATE pg_language SET lanpltrusted = true WHERE lanname = 'plpython3u';
---------------------------------------------------------------------------
-- Tables
--
---------------------------------------------------------------------------
-- Metadata from signalk
CREATE TABLE IF NOT EXISTS api.metadata(
id SERIAL PRIMARY KEY,
name VARCHAR(150) NULL,
mmsi NUMERIC NULL,
client_id VARCHAR(255) UNIQUE NOT NULL,
length DOUBLE PRECISION NULL,
beam DOUBLE PRECISION NULL,
height DOUBLE PRECISION NULL,
ship_type NUMERIC NULL,
plugin_version VARCHAR(10) NOT NULL,
signalk_version VARCHAR(10) NOT NULL,
time TIMESTAMP WITHOUT TIME ZONE NOT NULL, -- should be rename to last_update !?
active BOOLEAN DEFAULT True, -- trigger monitor online/offline
-- vessel_id link auth.vessels with api.metadata
created_at TIMESTAMP WITHOUT TIME ZONE NOT NULL DEFAULT NOW(),
updated_at TIMESTAMP WITHOUT TIME ZONE NOT NULL DEFAULT NOW()
);
-- Description
COMMENT ON TABLE
api.metadata
IS 'Stores metadata from vessel';
COMMENT ON COLUMN api.metadata.active IS 'trigger monitor online/offline';
-- Index
CREATE INDEX metadata_client_id_idx ON api.metadata (client_id);
CREATE INDEX metadata_mmsi_idx ON api.metadata (mmsi);
CREATE INDEX metadata_name_idx ON api.metadata (name);
---------------------------------------------------------------------------
-- Metrics from signalk
-- Create vessel status enum
CREATE TYPE status AS ENUM ('sailing', 'motoring', 'moored', 'anchored');
-- Table api.metrics
CREATE TABLE IF NOT EXISTS api.metrics (
time TIMESTAMP WITHOUT TIME ZONE NOT NULL,
client_id VARCHAR(255) NOT NULL REFERENCES api.metadata(client_id) ON DELETE RESTRICT,
latitude DOUBLE PRECISION NULL,
longitude DOUBLE PRECISION NULL,
speedOverGround DOUBLE PRECISION NULL,
courseOverGroundTrue DOUBLE PRECISION NULL,
windSpeedApparent DOUBLE PRECISION NULL,
angleSpeedApparent DOUBLE PRECISION NULL,
status status NULL,
metrics jsonb NULL,
CONSTRAINT valid_client_id CHECK (length(client_id) > 10),
CONSTRAINT valid_latitude CHECK (latitude >= -90 and latitude <= 90),
CONSTRAINT valid_longitude CHECK (longitude >= -180 and longitude <= 180)
);
-- Description
COMMENT ON TABLE
api.metrics
IS 'Stores metrics from vessel';
COMMENT ON COLUMN api.metrics.latitude IS 'With CONSTRAINT but allow NULL value to be ignored silently by trigger';
COMMENT ON COLUMN api.metrics.longitude IS 'With CONSTRAINT but allow NULL value to be ignored silently by trigger';
-- Index
CREATE INDEX ON api.metrics (client_id, time DESC);
CREATE INDEX ON api.metrics (status, time DESC);
-- json index??
CREATE INDEX ON api.metrics using GIN (metrics);
-- timescaledb hypertable
--SELECT create_hypertable('api.metrics', 'time');
-- timescaledb hypertable with space partitions
SELECT create_hypertable('api.metrics', 'time', 'client_id',
number_partitions => 2,
chunk_time_interval => INTERVAL '7 day',
if_not_exists => true);
---------------------------------------------------------------------------
-- Logbook
-- todo add clientid ref
-- todo add cosumption fuel?
-- todo add engine hour?
-- todo add geom object http://epsg.io/4326 EPSG:4326 Unit: degres
-- todo add geog object http://epsg.io/3857 EPSG:3857 Unit: meters
-- https://postgis.net/workshops/postgis-intro/geography.html#using-geography
-- https://medium.com/coord/postgis-performance-showdown-geometry-vs-geography-ec99967da4f0
-- virtual logbook by boat by client_id impossible?
-- https://www.postgresql.org/docs/current/ddl-partitioning.html
-- Issue:
-- https://www.reddit.com/r/PostgreSQL/comments/di5mbr/postgresql_12_foreign_keys_and_partitioned_tables/f3tsoop/
CREATE TABLE IF NOT EXISTS api.logbook(
id SERIAL PRIMARY KEY,
client_id VARCHAR(255) NOT NULL REFERENCES api.metadata(client_id) ON DELETE RESTRICT,
-- client_id VARCHAR(255) NOT NULL,
active BOOLEAN DEFAULT false,
name VARCHAR(255),
_from VARCHAR(255),
_from_lat DOUBLE PRECISION NULL,
_from_lng DOUBLE PRECISION NULL,
_to VARCHAR(255),
_to_lat DOUBLE PRECISION NULL,
_to_lng DOUBLE PRECISION NULL,
--track_geom Geometry(LINESTRING)
track_geom geometry(LINESTRING,4326) NULL,
track_geog geography(LINESTRING) NULL,
track_geojson JSON NULL,
_from_time TIMESTAMP WITHOUT TIME ZONE NOT NULL,
_to_time TIMESTAMP WITHOUT TIME ZONE NULL,
distance NUMERIC, -- meters?
duration INTERVAL, -- duration in days and hours?
avg_speed DOUBLE PRECISION NULL,
max_speed DOUBLE PRECISION NULL,
max_wind_speed DOUBLE PRECISION NULL,
notes TEXT NULL
);
-- Description
COMMENT ON TABLE
api.logbook
IS 'Stores generated logbook';
COMMENT ON COLUMN api.logbook.distance IS 'in NM';
-- Index todo!
CREATE INDEX logbook_client_id_idx ON api.logbook (client_id);
CREATE INDEX ON api.logbook USING GIST ( track_geom );
COMMENT ON COLUMN api.logbook.track_geom IS 'postgis geometry type EPSG:4326 Unit: degres';
CREATE INDEX ON api.logbook USING GIST ( track_geog );
COMMENT ON COLUMN api.logbook.track_geog IS 'postgis geography type default SRID 4326 Unit: degres';
-- Otherwise -- ERROR: Only lon/lat coordinate systems are supported in geography.
---------------------------------------------------------------------------
-- Stays
-- todo add clientid ref
-- todo add FOREIGN KEY?
-- virtual logbook by boat?
CREATE TABLE IF NOT EXISTS api.stays(
id SERIAL PRIMARY KEY,
client_id VARCHAR(255) NOT NULL REFERENCES api.metadata(client_id) ON DELETE RESTRICT,
-- client_id VARCHAR(255) NOT NULL,
active BOOLEAN DEFAULT false,
name VARCHAR(255),
latitude DOUBLE PRECISION NULL,
longitude DOUBLE PRECISION NULL,
geog GEOGRAPHY(POINT) NULL,
arrived TIMESTAMP WITHOUT TIME ZONE NOT NULL,
departed TIMESTAMP WITHOUT TIME ZONE,
duration INTERVAL, -- duration in days and hours?
stay_code INT DEFAULT 1, -- REFERENCES api.stays_at(stay_code),
notes TEXT NULL
);
-- Description
COMMENT ON TABLE
api.stays
IS 'Stores generated stays';
-- Index
CREATE INDEX stays_client_id_idx ON api.stays (client_id);
CREATE INDEX ON api.stays USING GIST ( geog );
COMMENT ON COLUMN api.stays.geog IS 'postgis geography type default SRID 4326 Unit: degres';
-- With other SRID ERROR: Only lon/lat coordinate systems are supported in geography.
---------------------------------------------------------------------------
-- Moorages
-- todo add clientid ref
-- virtual logbook by boat?
CREATE TABLE IF NOT EXISTS api.moorages(
id SERIAL PRIMARY KEY,
client_id VARCHAR(255) NOT NULL REFERENCES api.metadata(client_id) ON DELETE RESTRICT,
-- client_id VARCHAR(255) NOT NULL,
name VARCHAR(255),
country VARCHAR(255), -- todo need to update reverse_geocode_py_fn
stay_id INT NOT NULL, -- needed?
stay_code INT DEFAULT 1, -- needed? REFERENCES api.stays_at(stay_code)
stay_duration INTERVAL NULL,
reference_count INT DEFAULT 1,
latitude DOUBLE PRECISION NULL,
longitude DOUBLE PRECISION NULL,
geog GEOGRAPHY(POINT) NULL,
home_flag BOOLEAN DEFAULT false,
notes TEXT NULL
);
-- Description
COMMENT ON TABLE
api.moorages
IS 'Stores generated moorages';
-- Index
CREATE INDEX moorages_client_id_idx ON api.moorages (client_id);
CREATE INDEX ON api.moorages USING GIST ( geog );
COMMENT ON COLUMN api.moorages.geog IS 'postgis geography type default SRID 4326 Unit: degres';
-- With other SRID ERROR: Only lon/lat coordinate systems are supported in geography.
---------------------------------------------------------------------------
-- Stay Type
CREATE TABLE IF NOT EXISTS api.stays_at(
stay_code INTEGER NOT NULL,
description TEXT NOT NULL
);
-- Description
COMMENT ON TABLE api.stays_at IS 'Stay Type';
-- Insert default possible values
INSERT INTO api.stays_at(stay_code, description) VALUES
(1, 'Unknow'),
(2, 'Anchor'),
(3, 'Mooring Buoy'),
(4, 'Dock');
---------------------------------------------------------------------------
-- Trigger Functions Metadata table
--
-- UPSERT - Insert vs Update for Metadata
DROP FUNCTION IF EXISTS metadata_upsert_trigger_fn;
CREATE FUNCTION metadata_upsert_trigger_fn() RETURNS trigger AS $metadata_upsert$
DECLARE
metadata_id integer;
metadata_active boolean;
BEGIN
-- Set client_id to new value to allow RLS
PERFORM set_config('vessel.client_id', NEW.client_id, false);
-- UPSERT - Insert vs Update for Metadata
RAISE NOTICE 'metadata_upsert_trigger_fn';
SELECT m.id,m.active INTO metadata_id, metadata_active
FROM api.metadata m
WHERE (m.vessel_id IS NOT NULL AND m.vessel_id = current_setting('vessel.id', true))
OR (m.client_id IS NOT NULL AND m.client_id = NEW.client_id);
RAISE NOTICE 'metadata_id %', metadata_id;
IF metadata_id IS NOT NULL THEN
-- send notifitacion if boat is back online
IF metadata_active is False THEN
-- Add monitor online entry to process queue for later notification
INSERT INTO process_queue (channel, payload, stored)
VALUES ('monitoring_online', metadata_id, now());
END IF;
-- Update vessel metadata
UPDATE api.metadata
SET
name = NEW.name,
mmsi = NEW.mmsi,
client_id = NEW.client_id,
length = NEW.length,
beam = NEW.beam,
height = NEW.height,
ship_type = NEW.ship_type,
plugin_version = NEW.plugin_version,
signalk_version = NEW.signalk_version,
time = NEW.time,
active = true
WHERE id = metadata_id;
RETURN NULL; -- Ignore insert
ELSE
IF NEW.vessel_id IS NULL THEN
-- set vessel_id from jwt if not present in INSERT query
NEW.vessel_id = current_setting('vessel.id');
END IF;
-- Insert new vessel metadata and
RETURN NEW; -- Insert new vessel metadata
END IF;
END;
$metadata_upsert$ LANGUAGE plpgsql;
-- Description
COMMENT ON FUNCTION
public.metadata_upsert_trigger_fn
IS 'process metadata from vessel, upsert';
CREATE TRIGGER metadata_moddatetime
BEFORE UPDATE ON api.metadata
FOR EACH ROW
EXECUTE PROCEDURE moddatetime (updated_at);
-- Description
COMMENT ON TRIGGER metadata_moddatetime
ON api.metadata
IS 'Automatic update of updated_at on table modification';
-- FUNCTION Metadata notification for new vessel after insert
DROP FUNCTION IF EXISTS metadata_notification_trigger_fn;
CREATE FUNCTION metadata_notification_trigger_fn() RETURNS trigger AS $metadata_notification$
DECLARE
BEGIN
RAISE NOTICE 'metadata_notification_trigger_fn';
INSERT INTO process_queue (channel, payload, stored)
VALUES ('monitoring_online', NEW.id, now());
RETURN NULL;
END;
$metadata_notification$ LANGUAGE plpgsql;
-- Description
COMMENT ON FUNCTION
public.metadata_notification_trigger_fn
IS 'process metadata notification from vessel, monitoring_online';
---------------------------------------------------------------------------
-- Trigger metadata table
--
-- Metadata trigger BEFORE INSERT
CREATE TRIGGER metadata_upsert_trigger BEFORE INSERT ON api.metadata
FOR EACH ROW EXECUTE FUNCTION metadata_upsert_trigger_fn();
-- Description
COMMENT ON TRIGGER
metadata_upsert_trigger ON api.metadata
IS 'BEFORE INSERT ON api.metadata run function metadata_upsert_trigger_fn';
-- Metadata trigger AFTER INSERT
CREATE TRIGGER metadata_notification_trigger AFTER INSERT ON api.metadata
FOR EACH ROW EXECUTE FUNCTION metadata_notification_trigger_fn();
-- Description
COMMENT ON TRIGGER
metadata_notification_trigger ON api.metadata
IS 'AFTER INSERT ON api.metadata run function metadata_update_trigger_fn for notification on new vessel';
---------------------------------------------------------------------------
-- Trigger Functions metrics table
--
-- Create a logbook or stay entry base on the vessel state, eg: navigation.state
-- https://github.com/meri-imperiumi/signalk-autostate
DROP FUNCTION IF EXISTS metrics_trigger_fn;
CREATE FUNCTION metrics_trigger_fn() RETURNS trigger AS $metrics$
DECLARE
previous_status varchar;
previous_time TIMESTAMP WITHOUT TIME ZONE;
stay_code integer;
logbook_id integer;
stay_id integer;
valid_status BOOLEAN;
BEGIN
-- Set client_id to new value to allow RLS
PERFORM set_config('vessel.client_id', NEW.client_id, false);
--RAISE NOTICE 'metrics_trigger_fn client_id [%]', NEW.client_id;
-- Boat metadata are check using api.metrics REFERENCES to api.metadata
-- Fetch the latest entry to compare status against the new status to be insert
SELECT coalesce(m.status, 'moored'), m.time INTO previous_status, previous_time
FROM api.metrics m
WHERE m.client_id IS NOT NULL
AND m.client_id = NEW.client_id
ORDER BY m.time DESC LIMIT 1;
--RAISE NOTICE 'Metrics Status, New:[%] Previous:[%]', NEW.status, previous_status;
IF previous_time = NEW.time THEN
-- Ignore entry if same time
RAISE WARNING 'Metrics Ignoring metric, duplicate time [%] = [%]', previous_time, NEW.time;
RETURN NULL;
END IF;
-- Check if latitude or longitude are null
IF NEW.latitude IS NULL OR NEW.longitude IS NULL THEN
-- Ignore entry if null latitude,longitude
RAISE WARNING 'Metrics Ignoring metric, null latitude,longitude [%] [%]', NEW.latitude, NEW.longitude;
RETURN NULL;
END IF;
-- Check if status is null
IF NEW.status IS NULL THEN
RAISE WARNING 'Metrics Unknow NEW.status from vessel [%], set to default moored', NEW.status;
NEW.status := 'moored';
END IF;
IF previous_status IS NULL THEN
IF NEW.status = 'anchored' THEN
RAISE WARNING 'Metrics Unknow previous_status from vessel [%], set to default current status [%]', previous_status, NEW.status;
previous_status := NEW.status;
ELSE
RAISE WARNING 'Metrics Unknow previous_status from vessel [%], set to default status moored vs [%]', previous_status, NEW.status;
previous_status := 'moored';
END IF;
-- Add new stay as no previous entry exist
INSERT INTO api.stays
(client_id, active, arrived, latitude, longitude, stay_code)
VALUES (NEW.client_id, true, NEW.time, NEW.latitude, NEW.longitude, stay_code)
RETURNING id INTO stay_id;
-- Add stay entry to process queue for further processing
INSERT INTO process_queue (channel, payload, stored) values ('new_stay', stay_id, now());
RAISE WARNING 'Metrics Insert first stay as no previous metrics exist, stay_id %', stay_id;
END IF;
-- Check if status is valid enum
SELECT NEW.status::name = any(enum_range(null::status)::name[]) INTO valid_status;
IF valid_status IS False THEN
-- Ignore entry if status is invalid
RAISE WARNING 'Metrics Ignoring metric, invalid status [%]', NEW.status;
RETURN NULL;
END IF;
-- Check the state and if any previous/current entry
-- If new status is sailing or motoring
IF previous_status::TEXT <> NEW.status::TEXT AND
( (NEW.status::TEXT = 'sailing' AND previous_status::TEXT <> 'motoring')
OR (NEW.status::TEXT = 'motoring' AND previous_status::TEXT <> 'sailing') ) THEN
RAISE WARNING 'Metrics Update status, try new logbook, New:[%] Previous:[%]', NEW.status, previous_status;
-- Start new log
logbook_id := public.trip_in_progress_fn(NEW.client_id::TEXT);
IF logbook_id IS NULL THEN
INSERT INTO api.logbook
(client_id, active, _from_time, _from_lat, _from_lng)
VALUES (NEW.client_id, true, NEW.time, NEW.latitude, NEW.longitude)
RETURNING id INTO logbook_id;
RAISE WARNING 'Metrics Insert new logbook, logbook_id %', logbook_id;
ELSE
UPDATE api.logbook
SET
active = false,
_to_time = NEW.time,
_to_lat = NEW.latitude,
_to_lng = NEW.longitude
WHERE id = logbook_id;
RAISE WARNING 'Metrics Existing Logbook logbook_id [%] [%] [%]', logbook_id, NEW.status, NEW.time;
END IF;
-- End current stay
stay_id := public.stay_in_progress_fn(NEW.client_id::TEXT);
IF stay_id IS NOT NULL THEN
UPDATE api.stays
SET
active = false,
departed = NEW.time
WHERE id = stay_id;
RAISE WARNING 'Metrics Updating Stay end current stay_id [%] [%] [%]', stay_id, NEW.status, NEW.time;
-- Add moorage entry to process queue for further processing
INSERT INTO process_queue (channel, payload, stored) values ('new_moorage', stay_id, now());
ELSE
RAISE WARNING 'Metrics Invalid stay_id [%] [%]', stay_id, NEW.time;
END IF;
-- If new status is moored or anchored
ELSIF previous_status::TEXT <> NEW.status::TEXT AND
( (NEW.status::TEXT = 'moored' AND previous_status::TEXT <> 'anchored')
OR (NEW.status::TEXT = 'anchored' AND previous_status::TEXT <> 'moored') ) THEN
-- Start new stays
RAISE WARNING 'Metrics Update status, try new stay, New:[%] Previous:[%]', NEW.status, previous_status;
stay_id := public.stay_in_progress_fn(NEW.client_id::TEXT);
IF stay_id IS NULL THEN
RAISE WARNING 'Metrics Inserting new stay [%]', NEW.status;
-- If metric status is anchored set stay_code accordingly
stay_code = 1;
IF NEW.status = 'anchored' THEN
stay_code = 2;
END IF;
-- Add new stay
INSERT INTO api.stays
(client_id, active, arrived, latitude, longitude, stay_code)
VALUES (NEW.client_id, true, NEW.time, NEW.latitude, NEW.longitude, stay_code)
RETURNING id INTO stay_id;
-- Add stay entry to process queue for further processing
INSERT INTO process_queue (channel, payload, stored) values ('new_stay', stay_id, now());
ELSE
RAISE WARNING 'Metrics Invalid stay_id [%] [%]', stay_id, NEW.time;
UPDATE api.stays
SET
active = false,
departed = NEW.time
WHERE id = stay_id;
END IF;
-- End current log/trip
-- Fetch logbook_id by client_id
logbook_id := public.trip_in_progress_fn(NEW.client_id::TEXT);
IF logbook_id IS NOT NULL THEN
-- todo check on time start vs end
RAISE WARNING 'Metrics Updating trip status [%] [%] [%]', logbook_id, NEW.status, NEW.time;
UPDATE api.logbook
SET
active = false,
_to_time = NEW.time,
_to_lat = NEW.latitude,
_to_lng = NEW.longitude
WHERE id = logbook_id;
-- Add logbook entry to process queue for later processing
INSERT INTO process_queue (channel, payload, stored) values ('new_logbook', logbook_id, now());
ELSE
RAISE WARNING 'Metrics Invalid logbook_id [%] [%]', logbook_id, NEW.time;
END IF;
END IF;
RETURN NEW; -- Finally insert the actual new metric
END;
$metrics$ LANGUAGE plpgsql;
-- Description
COMMENT ON FUNCTION
public.metrics_trigger_fn
IS 'process metrics from vessel, generate new_logbook and new_stay';
--
-- Triggers logbook update on metrics insert
CREATE TRIGGER metrics_trigger BEFORE INSERT ON api.metrics
FOR EACH ROW EXECUTE FUNCTION metrics_trigger_fn();
-- Description
COMMENT ON TRIGGER
metrics_trigger ON api.metrics
IS 'BEFORE INSERT ON api.metrics run function metrics_trigger_fn';
---------------------------------------------------------------------------
-- API helper functions
--
---------------------------------------------------------------------------
---------------------------------------------------------------------------
-- Functions API schema
-- Export a log entry to geojson
DROP FUNCTION IF EXISTS api.export_logbook_geojson_point_fn;
CREATE OR REPLACE FUNCTION api.export_logbook_geojson_point_fn(IN _id INTEGER, OUT geojson JSON) RETURNS JSON AS $export_logbook_geojson_point$
DECLARE
logbook_rec record;
BEGIN
-- If _id is is not NULL and > 0
SELECT * INTO logbook_rec
FROM api.logbook WHERE id = _id;
WITH log AS (
SELECT m.time as time, m.latitude as lat, m.longitude as lng, m.courseOverGroundTrue as cog
FROM api.metrics m
WHERE m.latitude IS NOT null
AND m.longitude IS NOT null
AND m.time >= logbook_rec._from_time::timestamp without time zone
AND m.time <= logbook_rec._to_time::timestamp without time zone
GROUP by m.time,m.latitude,m.longitude,m.courseOverGroundTrue
ORDER BY m.time ASC)
SELECT json_build_object(
'type', 'FeatureCollection',
'crs', json_build_object(
'type', 'name',
'properties', json_build_object(
'name', 'EPSG:4326'
)
),
'features', json_agg(
json_build_object(
'type', 'Feature',
-- 'id', {id}, -- the GeoJson spec includes an 'id' field, but it is optional, replace {id} with your id field
'geometry', ST_AsGeoJSON(st_makepoint(lng,lat))::json,
'properties', json_build_object(
-- list of fields
'field1', time,
'field2', cog
)
)
)
) INTO geojson
FROM log;
END;
$export_logbook_geojson_point$ LANGUAGE plpgsql;
-- Description
COMMENT ON FUNCTION
api.export_logbook_geojson_point_fn
IS 'Export a log entry to geojson feature point with Time and courseOverGroundTrue properties';
-- Export a log entry to geojson
DROP FUNCTION IF EXISTS api.export_logbook_geojson_linestring_fn;
CREATE FUNCTION api.export_logbook_geojson_linestring_fn(IN _id INTEGER) RETURNS JSON AS $export_logbook_geojson_linestring$
DECLARE
geojson json;
BEGIN
-- If _id is is not NULL and > 0
SELECT ST_AsGeoJSON(l.*) INTO geojson
FROM api.logbook l
WHERE l.id = _id;
RETURN geojson;
END;
$export_logbook_geojson_linestring$ LANGUAGE plpgsql;
-- Description
COMMENT ON FUNCTION
api.export_logbook_geojson_linestring_fn
IS 'Export a log entry to geojson feature linestring';
-- export_logbook_geojson_fn
DROP FUNCTION IF EXISTS api.export_logbook_geojson_fn;
CREATE FUNCTION api.export_logbook_geojson_fn(IN _id integer, OUT geojson JSON) RETURNS JSON AS $export_logbook_geojson$
DECLARE
logbook_rec record;
log_geojson jsonb;
metrics_geojson jsonb;
_map jsonb;
BEGIN
-- Gather log details
-- If _id is is not NULL and > 0
SELECT * INTO logbook_rec
FROM api.logbook WHERE id = _id;
-- GeoJson Feature Logbook linestring
SELECT
ST_AsGeoJSON(l.*) into log_geojson
FROM
api.logbook l
WHERE l.id = _id;
-- GeoJson Feature Metrics point
SELECT
json_agg(ST_AsGeoJSON(t.*)::json) into metrics_geojson
FROM (
( SELECT
time,
courseovergroundtrue,
speedoverground,
anglespeedapparent,
longitude,latitude,
st_makepoint(longitude,latitude) AS geo_point
FROM api.metrics m
WHERE m.latitude IS NOT NULL
AND m.longitude IS NOT NULL
AND time >= logbook_rec._from_time::TIMESTAMP WITHOUT TIME ZONE
AND time <= logbook_rec._to_time::TIMESTAMP WITHOUT TIME ZONE
ORDER BY m.time ASC
)
) AS t;
-- Merge jsonb
select log_geojson::jsonb || metrics_geojson::jsonb into _map;
-- output
SELECT
json_build_object(
'type', 'FeatureCollection',
'features', _map
) into geojson;
END;
$export_logbook_geojson$ LANGUAGE plpgsql;
-- Description
COMMENT ON FUNCTION
api.export_logbook_geojson_fn
IS 'Export a log entry to geojson feature linestring and multipoint';
-- Generate GPX XML file output
-- https://opencpn.org/OpenCPN/info/gpxvalidation.html
--
DROP FUNCTION IF EXISTS api.export_logbook_gpx_fn;
CREATE OR REPLACE FUNCTION api.export_logbook_gpx_fn(IN _id INTEGER) RETURNS pg_catalog.xml
AS $export_logbook_gpx$
DECLARE
log_rec record;
BEGIN
-- Gather log details _from_time and _to_time
SELECT * into log_rec
FROM
api.logbook l
WHERE l.id = _id;
-- Generate XML
RETURN xmlelement(name gpx,
xmlattributes( '1.1' as version,
'PostgSAIL' as creator,
'http://www.topografix.com/GPX/1/1' as xmlns,
'http://www.opencpn.org' as "xmlns:opencpn",
'http://www.w3.org/2001/XMLSchema-instance' as "xmlns:xsi",
'http://www.garmin.com/xmlschemas/GpxExtensions/v3' as "xmlns:gpxx",
'http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www8.garmin.com/xmlschemas/GpxExtensionsv3.xsd' as "xsi:schemaLocation"),
xmlelement(name trk,
xmlelement(name name, 'Track Name'),
xmlelement(name desc, 'Track Description'),
xmlelement(name link, xmlattributes('https://openplotter.cloud/log/{_id}' as href),
xmlelement(name text, 'Link name')),
xmlelement(name extensions, xmlelement(name "opencpn:guid", uuid_generate_v4()),
xmlelement(name "opencpn:viz", '1'),
xmlelement(name "opencpn:start", log_rec._from_time),
xmlelement(name "opencpn:end", log_rec._to_time)
),
xmlelement(name trkseg, xmlagg(
xmlelement(name trkpt,
xmlattributes(latitude as lat, longitude as lon),
xmlelement(name time, time)
)))))::pg_catalog.xml
FROM api.metrics m
WHERE m.latitude IS NOT null
AND m.longitude IS NOT null
AND m.time >= log_rec._from_time::TIMESTAMP WITHOUT TIME ZONE
AND m.time <= log_rec._to_time::TIMESTAMP WITHOUT TIME ZONE;
END;
$export_logbook_gpx$ LANGUAGE plpgsql;
-- Description
COMMENT ON FUNCTION
api.export_logbook_gpx_fn
IS 'Export a log entry to GPX XML format';
-- Find all log from and to moorage geopoint within 100m
DROP FUNCTION IF EXISTS api.find_log_from_moorage_fn;
CREATE FUNCTION api.find_log_from_moorage_fn(IN _id INTEGER) RETURNS void AS $find_log_from_moorage$
DECLARE
moorage_rec record;
logbook_rec record;
BEGIN
-- If _id is is not NULL and > 0
SELECT * INTO moorage_rec
FROM api.moorages m
WHERE m.id = _id;
-- find all log from and to moorage geopoint within 100m
--RETURN QUERY
SELECT id,name,_from,_to,_from_time,_to_time,distance,duration
FROM api.logbook
WHERE ST_DWithin(
Geography(ST_MakePoint(_from_lng, _from_lat)),
moorage_rec.geog,
100 -- in meters ?
)
OR ST_DWithin(
Geography(ST_MakePoint(_to_lng, _to_lat)),
moorage_rec.geog,
100 -- in meters ?
)
ORDER BY _from_time DESC;
END;
$find_log_from_moorage$ LANGUAGE plpgsql;
-- Description
COMMENT ON FUNCTION
api.find_log_from_moorage_fn
IS 'Find all log from and to moorage geopoint within 100m';
-- Find all stay within 100m of moorage geopoint
DROP FUNCTION IF EXISTS api.find_stay_from_moorage_fn;
CREATE FUNCTION api.find_stay_from_moorage_fn(IN _id INTEGER) RETURNS void AS $find_stay_from_moorage$
DECLARE
moorage_rec record;
stay_rec record;
BEGIN
-- If _id is is not NULL and > 0
SELECT * INTO moorage_rec
FROM api.moorages m
WHERE m.id = _id;
-- find all log from and to moorage geopoint within 100m
--RETURN QUERY
SELECT s.id,s.arrived,s.departed,s.duration,sa.description
FROM api.stays s, api.stays_at sa
WHERE ST_DWithin(
s.geog,
moorage_rec.geog,
100 -- in meters ?
)
AND departed IS NOT NULL
AND s.name IS NOT NULL
AND s.stay_code = sa.stay_code
ORDER BY s.arrived DESC;
END;
$find_stay_from_moorage$ LANGUAGE plpgsql;
-- Description
COMMENT ON FUNCTION
api.find_stay_from_moorage_fn
IS 'Find all stay within 100m of moorage geopoint';
-- trip_in_progress_fn
DROP FUNCTION IF EXISTS public.trip_in_progress_fn;
CREATE FUNCTION public.trip_in_progress_fn(IN _client_id TEXT) RETURNS INT AS $trip_in_progress$
DECLARE
logbook_id INT := NULL;
BEGIN
SELECT id INTO logbook_id
FROM api.logbook l
WHERE l.client_id IS NOT NULL
AND l.client_id = _client_id
AND active IS true
LIMIT 1;
RETURN logbook_id;
END;
$trip_in_progress$ LANGUAGE plpgsql;
-- Description
COMMENT ON FUNCTION
public.trip_in_progress_fn
IS 'trip_in_progress';
-- stay_in_progress_fn
DROP FUNCTION IF EXISTS public.stay_in_progress_fn;
CREATE FUNCTION public.stay_in_progress_fn(IN _client_id TEXT) RETURNS INT AS $stay_in_progress$
DECLARE
stay_id INT := NULL;
BEGIN
SELECT id INTO stay_id
FROM api.stays s
WHERE s.client_id IS NOT NULL
AND s.client_id = _client_id
AND active IS true
LIMIT 1;
RETURN stay_id;
END;
$stay_in_progress$ LANGUAGE plpgsql;
-- Description
COMMENT ON FUNCTION
public.stay_in_progress_fn
IS 'stay_in_progress';
---------------------------------------------------------------------------
-- API helper views
--
---------------------------------------------------------------------------
---------------------------------------------------------------------------
-- Views
-- Views are invoked with the privileges of the view owner,
-- make the user_role the view’s owner.
---------------------------------------------------------------------------
CREATE VIEW first_metric AS
SELECT *
FROM api.metrics
ORDER BY time ASC LIMIT 1;
CREATE VIEW last_metric AS
SELECT *
FROM api.metrics
ORDER BY time DESC LIMIT 1;
CREATE VIEW trip_in_progress AS
SELECT *
FROM api.logbook
WHERE active IS true;
CREATE VIEW stay_in_progress AS
SELECT *
FROM api.stays
WHERE active IS true;
-- list all json keys from api.metrics.metric jsonb
--select m.time,jsonb_object_keys(m.metrics) from last_metric m where m.client_id = 'vessels.urn:mrn:imo:mmsi:787654321';
-- TODO: Use materialized views instead as it is not live data
-- Logs web view
DROP VIEW IF EXISTS api.logs_view;
CREATE OR REPLACE VIEW api.logs_view AS
SELECT id,
name as "Name",
_from as "From",
_from_time as "Started",
_to as "To",
_to_time as "Ended",
distance as "Distance",
duration as "Duration"
FROM api.logbook l
WHERE _to_time IS NOT NULL
ORDER BY _from_time DESC;
-- Description
COMMENT ON VIEW
api.logs_view
IS 'Logs web view';
DROP VIEW IF EXISTS api.log_view;
CREATE OR REPLACE VIEW api.log_view AS
SELECT id,
name as "Name",
_from as "From",
_from_time as "Started",
_to as "To",
_to_time as "Ended",
distance as "Distance",
duration as "Duration",
notes as "Notes",
track_geojson as geojson,
avg_speed as avg_speed,
max_speed as max_speed,
max_wind_speed as max_wind_speed
FROM api.logbook l
WHERE _to_time IS NOT NULL
ORDER BY _from_time DESC;
-- Description
COMMENT ON VIEW
api.logs_view
IS 'Log web view';
-- Stays web view
-- TODO group by month
DROP VIEW IF EXISTS api.stays_view;
CREATE VIEW api.stays_view AS -- TODO
SELECT
concat(
extract(DAYS FROM (s.departed-s.arrived)::interval),
' days',
--DATE_TRUNC('day', s.departed-s.arrived),
' stay at ',
s.name,
' in ',
RTRIM(TO_CHAR(s.departed, 'Month')),
' ',
TO_CHAR(s.departed, 'YYYY')
) as Name,
s.name AS Moorage,
s.arrived AS Arrived,
s.departed AS Departed,
sa.description AS "Stayed at",
(s.departed-s.arrived) AS Duration
FROM api.stays s, api.stays_at sa
WHERE departed is not null
AND s.name is not null
AND s.stay_code = sa.stay_code
ORDER BY s.arrived DESC;
-- Description
COMMENT ON VIEW
api.stays_view
IS 'Stays web view';
DROP VIEW IF EXISTS api.stay_view;
CREATE VIEW api.stay_view AS -- TODO missing arrival/departured from
SELECT
concat(
extract(DAYS FROM (s.departed-s.arrived)::interval),
' days',
--DATE_TRUNC('day', s.departed-s.arrived),
' stay at ',
s.name,
' in ',
RTRIM(TO_CHAR(s.departed, 'Month')),
' ',
TO_CHAR(s.departed, 'YYYY')
) as Name,
s.name AS Moorage,
(s.departed-s.arrived) AS Duration,
sa.description AS "Stayed at",
s.arrived AS "Arrival Time",
s.departed AS "Departure Time",
s.notes AS "Notes"
FROM api.stays s, api.stays_at sa
WHERE departed is not null
AND s.name is not null
AND s.stay_code = sa.stay_code
ORDER BY s.arrived DESC;
-- Description
COMMENT ON VIEW
api.stay_view
IS 'Stay web view';
-- Moorages web view
-- TODO, this is wrong using distinct (m.name) should be using postgis geog feature
--DROP VIEW IF EXISTS api.moorages_view_old;
--CREATE VIEW api.moorages_view_old AS
-- SELECT
-- m.name AS Moorage,
-- sa.description AS "Default Stay",
-- sum((m.departed-m.arrived)) OVER (PARTITION by m.name) AS "Total Stay",
-- count(m.departed) OVER (PARTITION by m.name) AS "Arrivals & Departures"
-- FROM api.moorages m, api.stays_at sa
-- WHERE departed is not null
-- AND m.name is not null
-- AND m.stay_code = sa.stay_code
-- GROUP BY m.name,sa.description,m.departed,m.arrived
-- ORDER BY 4 DESC;
-- the good way?
DROP VIEW IF EXISTS api.moorages_view;
CREATE OR REPLACE VIEW api.moorages_view AS -- TODO
SELECT
m.name AS Moorage,
sa.description AS "Default Stay",
EXTRACT(DAY FROM justify_hours ( m.stay_duration )) AS "Total Stay",
m.reference_count AS "Arrivals & Departures",
m.geog
-- m.stay_duration,
-- justify_hours ( m.stay_duration )
FROM api.moorages m, api.stays_at sa
WHERE m.name is not null
AND m.stay_code = sa.stay_code
GROUP BY m.name,sa.description,m.stay_duration,m.reference_count,m.geog
-- ORDER BY 4 DESC;
ORDER BY m.reference_count DESC;
-- Description
COMMENT ON VIEW
api.moorages_view
IS 'Moorages web view';
DROP VIEW IF EXISTS api.moorage_view;
CREATE OR REPLACE VIEW api.moorage_view AS -- TODO
SELECT
m.name AS "Preferred Name",
m.stay_code AS "Default Stay Type",
m.home_flag AS "Home",
EXTRACT(DAY FROM justify_hours ( m.stay_duration )) AS "Total Stay",
m.reference_count AS "Arrivals & Departures",
m.notes,
m.geog
FROM api.moorages m
WHERE m.name is not null;
-- Description
COMMENT ON VIEW
api.moorage_view
IS 'Moorage web view';
-- All moorage in 100 meters from the start of a logbook.
-- ST_DistanceSphere Returns minimum distance in meters between two lon/lat points.
--SELECT
-- m.name, ST_MakePoint(m._lng,m._lat),
-- l._from, ST_MakePoint(l._from_lng,l._from_lat),
-- ST_DistanceSphere(ST_MakePoint(m._lng,m._lat), ST_MakePoint(l._from_lng,l._from_lat))
-- FROM api.moorages m , api.logbook l
-- WHERE ST_DistanceSphere(ST_MakePoint(m._lng,m._lat), ST_MakePoint(l._from_lng,l._from_lat)) <= 100;
-- Stats web view
-- TODO....
-- first time entry from metrics
----> select * from api.metrics m ORDER BY m.time desc limit 1
-- last time entry from metrics
----> select * from api.metrics m ORDER BY m.time asc limit 1
-- max speed from logbook
-- max wind speed from logbook
----> select max(l.max_speed) as max_speed, max(l.max_wind_speed) as max_wind_speed from api.logbook l;
-- Total Distance from logbook
----> select sum(l.distance) as "Total Distance" from api.logbook l;
-- Total Time Underway from logbook
----> select sum(l.duration) as "Total Time Underway" from api.logbook l;
-- Longest Nonstop Sail from logbook, eg longest trip duration and distance
----> select max(l.duration),max(l.distance) from api.logbook l;
CREATE VIEW api.stats_logs_view AS -- TODO
WITH
meta AS (
SELECT m.name FROM api.metadata m ),
last_metric AS (
SELECT m.time FROM api.metrics m ORDER BY m.time DESC limit 1),
first_metric AS (
SELECT m.time FROM api.metrics m ORDER BY m.time ASC limit 1),
logbook AS (
SELECT
count(*) AS "Number of Log Entries",
max(l.max_speed) AS "Max Speed",
max(l.max_wind_speed) AS "Max Wind Speed",
sum(l.distance) AS "Total Distance",
sum(l.duration) AS "Total Time Underway",
concat( max(l.distance), ' NM, ', max(l.duration), ' hours') AS "Longest Nonstop Sail"
FROM api.logbook l)
SELECT
m.name as Name,
fm.time AS first,
lm.time AS last,
l.*
FROM first_metric fm, last_metric lm, logbook l, meta m;
COMMENT ON VIEW
api.stats_logs_view
IS 'Statistics Logs web view';
-- Home Ports / Unique Moorages
----> select count(*) as "Home Ports" from api.moorages m where home_flag is true;
-- Unique Moorages
----> select count(*) as "Home Ports" from api.moorages m;
-- Time Spent at Home Port(s)
----> select sum(m.stay_duration) as "Time Spent at Home Port(s)" from api.moorages m where home_flag is true;
-- OR
----> select m.stay_duration as "Time Spent at Home Port(s)" from api.moorages m where home_flag is true;
-- Time Spent Away
----> select sum(m.stay_duration) as "Time Spent Away" from api.moorages m where home_flag is false;
-- Time Spent Away order by, group by stay_code (Dock, Anchor, Mooring Buoys, Unclassified)
----> select sa.description,sum(m.stay_duration) as "Time Spent Away" from api.moorages m, api.stays_at sa where home_flag is false AND m.stay_code = sa.stay_code group by m.stay_code,sa.description order by m.stay_code;
CREATE VIEW api.stats_moorages_view AS -- TODO
WITH
home_ports AS (
select count(*) as home_ports from api.moorages m where home_flag is true
),
unique_moorage AS (
select count(*) as unique_moorage from api.moorages m
),
time_at_home_ports AS (
select sum(m.stay_duration) as time_at_home_ports from api.moorages m where home_flag is true
),
time_spent_away AS (
select sum(m.stay_duration) as time_spent_away from api.moorages m where home_flag is false
)
SELECT
home_ports.home_ports as "Home Ports",
unique_moorage.unique_moorage as "Unique Moorages",
time_at_home_ports.time_at_home_ports "Time Spent at Home Port(s)",
time_spent_away.time_spent_away as "Time Spent Away"
FROM home_ports, unique_moorage, time_at_home_ports, time_spent_away;
COMMENT ON VIEW
api.stats_moorages_view
IS 'Statistics Moorages web view';
CREATE VIEW api.stats_moorages_away_view AS -- TODO
SELECT sa.description,sum(m.stay_duration) as time_spent_away_by
FROM api.moorages m, api.stays_at sa
WHERE home_flag IS false
AND m.stay_code = sa.stay_code
GROUP BY m.stay_code,sa.description
ORDER BY m.stay_code;
COMMENT ON VIEW
api.stats_moorages_away_view
IS 'Statistics Moorages Time Spent Away web view';
--CREATE VIEW api.stats_view AS -- todo
-- WITH
-- logs AS (
-- SELECT * FROM api.stats_logs_view ),
-- moorages AS (
-- SELECT * FROM api.stats_moorages_view)
-- SELECT
-- l.*,
-- m.*
-- FROM logs l, moorages m;
-- global timelapse
-- TODO
CREATE VIEW timelapse AS -- TODO
SELECT latitude, longitude from api.metrics;
-- View main monitoring for grafana
-- LAST Monitoring data from json!
CREATE VIEW api.monitoring_view AS
SELECT
time AS "time",
metrics-> 'environment.water.temperature' AS waterTemperature,
metrics-> 'environment.inside.temperature' AS insideTemperature,
metrics-> 'environment.outside.temperature' AS outsideTemperature,
metrics-> 'environment.wind.speedOverGround' AS windSpeedOverGround,
metrics-> 'environment.wind.directionGround' AS windDirectionGround,
metrics-> 'environment.inside.humidity' AS insideHumidity,
metrics-> 'environment.outside.humidity' AS outsideHumidity,
metrics-> 'environment.outside.pressure' AS outsidePressure,
metrics-> 'environment.inside.pressure' AS insidePressure
FROM api.metrics m
ORDER BY time DESC LIMIT 1;
CREATE VIEW api.monitoring_humidity AS
SELECT
time AS "time",
metrics-> 'environment.inside.humidity' AS insideHumidity,
metrics-> 'environment.outside.humidity' AS outsideHumidity
FROM api.metrics m
ORDER BY time DESC LIMIT 1;
-- View System RPI monitoring for grafana
-- View Electric monitoring for grafana
-- View main monitoring for grafana
-- LAST Monitoring data from json!
CREATE VIEW api.monitoring_temperatures AS
SELECT
time AS "time",
metrics-> 'environment.water.temperature' AS waterTemperature,
metrics-> 'environment.inside.temperature' AS insideTemperature,
metrics-> 'environment.outside.temperature' AS outsideTemperature
FROM api.metrics m
ORDER BY time DESC LIMIT 1;
-- json key regexp
-- https://stackoverflow.com/questions/38204467/selecting-for-a-jsonb-array-contains-regex-match
-- Last voltage data from json!
CREATE VIEW api.monitoring_voltage AS
SELECT
time AS "time",
cast(metrics-> 'electrical.batteries.AUX2.voltage' AS numeric) AS AUX2,
cast(metrics-> 'electrical.batteries.House.voltage' AS numeric) AS House,
cast(metrics-> 'environment.rpi.pijuice.gpioVoltage' AS numeric) AS gpioVoltage,
cast(metrics-> 'electrical.batteries.Seatalk.voltage' AS numeric) AS SeatalkVoltage,
cast(metrics-> 'electrical.batteries.Starter.voltage' AS numeric) AS StarterVoltage,
cast(metrics-> 'environment.rpi.pijuice.batteryVoltage' AS numeric) AS RPIBatteryVoltage,
cast(metrics-> 'electrical.batteries.victronDevice.voltage' AS numeric) AS victronDeviceVoltage
FROM api.metrics m
ORDER BY time DESC LIMIT 1;
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