asdas

schema2.sql

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+begin;
+
+-- roles
+alter schema public owner to sensor_admin;
+grant usage on schema public to sensor_writer;
+
+grant all on all tables in schema public to sensor_admin;
+grant all on all sequences in schema public to sensor_admin;
+
+grant insert, update, select on all tables in schema public to sensor_writer;
+grant usage, select on all sequences in schema public to sensor_writer;
+
+alter default privileges for role sensor_admin in schema public
+    grant insert, update, select on tables to sensor_writer;
+
+alter default privileges for role sensor_admin in schema public
+    grant usage, select on sequences to sensor_writer;
+
+-- pg_partman
+create schema if not exists partman;
+create extension if not exists pg_partman schema partman;
+
+do $$
+begin
+  if not exists (select 1 from pg_roles where rolname = 'partman_user') then
+    create role partman_user with login;
+  end if;
+end$$;
+
+grant all on schema partman to partman_user;
+grant all on all tables in schema partman to partman_user;
+grant execute on all functions in schema partman to partman_user;
+grant execute on all procedures in schema partman to partman_user;
+
+grant all on schema public to partman_user;
+grant all on all tables in schema public to partman_user;
+grant temporary on database sensor_db to partman_user;
+grant create on database sensor_db to partman_user;
+
+grant usage, create on schema partman to sensor_admin;
+grant execute on all functions in schema partman to sensor_admin;
+grant all on all tables in schema partman to sensor_admin;
+grant all on all sequences in schema partman to sensor_admin;
+
+set role sensor_admin;
+
+-- physical/transport endpoints
+create table if not exists endpoints (
+    endpoint_id int primary key generated by default as identity,
+    endpoint_key text not null unique,
+
+    -- 'snmp' | 'mqtt' | 'visa'
+    protocol text not null,
+    conn jsonb not null default '{}'::jsonb,
+
+    is_enabled boolean not null default true,
+
+    created_at timestamptz not null default now(),
+    updated_at timestamptz not null default now()
+);
+
+create index if not exists idx_endpoints_enabled_protocol
+on endpoints (is_enabled, protocol);
+
+create table if not exists locations (
+    location_id int primary key generated by default as identity,
+    name text not null,
+    is_active bool not null default true,
+    constraint locations_name_unique unique (name)
+);
+
+create table if not exists devices (
+    device_id int primary key generated by default as identity,
+    -- "snmp:10.0.0.12:probe1"
+    -- "mqtt:esp32-1"
+    -- "visa:prologix:gpib5"
+    device_key text not null unique,
+
+    endpoint_id int references endpoints(endpoint_id),
+    location_id int references locations(location_id),
+    is_enabled boolean not null default true,
+
+    metadata jsonb not null default '{}'::jsonb,
+
+    created_at timestamptz not null default now(),
+    updated_at timestamptz not null default now()
+);
+
+create index if not exists idx_devices_endpoint on devices (endpoint_id);
+create index if not exists idx_devices_location on devices (location_id);
+create index if not exists idx_devices_enabled on devices (is_enabled);
+
+-- per-device measurement defs
+create table if not exists device_channels (
+    channel_id int primary key generated by default as identity,
+    device_id int not null references devices(device_id) on delete cascade,
+
+    -- corresponds to a column name in sensor_data (wide mapping)
+    metric text not null,
+
+    -- SNMP: {"type":"snmp_oid","oid":".1.3.6...","datatype":"float"}
+    -- MQTT: {"type":"mqtt_topic","topic":"sensors/x/telemetry","payload":"json","field":"temperature_c"}
+    -- VISA: {"type":"scpi","query":"MEAS:VOLT:DC?","read_termination":"\n"}
+    source jsonb not null,
+
+    scale_value double precision not null default 1.0,
+    offset_value double precision not null default 0.0,
+
+    poll_interval_s int,
+    is_enabled boolean not null default true,
+
+    created_at timestamptz not null default now(),
+
+    constraint device_channels_unique_metric unique (device_id, metric)
+);
+
+create index if not exists idx_device_channels_device on device_channels (device_id);
+
+-- device health/status
+create table if not exists device_status (
+    device_id int primary key references devices(device_id) on delete cascade,
+    last_seen timestamptz,
+    last_ok timestamptz,
+    last_error_at timestamptz,
+    last_error text,
+    updated_at timestamptz not null default now()
+);
+
+create table if not exists sensor_data (
+    ts          timestamptz not null,
+    device_id   int not null references devices(device_id),
+    location_id int references locations(location_id),
+
+    temp_c      real,
+    humidity_rh real,
+    pressure_pa real,
+    light_lux   real,
+    soil_moist  real,
+    co2_ppm     real,
+
+    voltage_v   real,
+    current_a   real,
+    resistance_ohm real,
+    freq_hz     real,
+    power_w     real,
+
+    constraint sensor_data_pk primary key (device_id, ts)
+) partition by range (ts);
+
+create index if not exists idx_sensor_data_device_ts on sensor_data (device_id, ts desc);
+create index if not exists idx_sensor_data_location_ts on sensor_data (location_id, ts desc);
+create index if not exists idx_sensor_data_ts_brin on sensor_data using brin(ts);
+
+-- partition
+select partman.create_parent(
+    p_parent_table  => 'public.sensor_data',
+    p_control       => 'ts',
+    p_interval      => '1 year',
+    p_premake       => 2
+);
+
+commit;
+