HB, OTA etc

db/migrations/V2__telemetry_data.sql

@@ -0,0 +1,20 @@
+CREATE TABLE telemetry_data (
+    id BIGINT AUTO_INCREMENT PRIMARY KEY,
+
+    device_id BIGINT NOT NULL,
+    ts BIGINT NOT NULL,
+
+    metric VARCHAR(32) NOT NULL,
+    source VARCHAR(64) NOT NULL,
+
+    value DOUBLE NOT NULL,
+
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+
+    INDEX idx_device_metric_ts (device_id, metric, ts),
+    INDEX idx_ts (ts),
+
+    FOREIGN KEY (device_id) REFERENCES devices(id)
+);
+
+CREATE INDEX idx_processed ON telemetry(processed);

db/migrations/V3__telemetry_processed_index.sql

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+CREATE INDEX idx_telemetry_processed_id
+ON telemetry (processed, id);

db/migrations/V4__telemetry_units.sql

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+alter TABLE telemetry
+add defective boolean default false,
+add defective_reason varchar(64);
+
+alter TABLE telemetry_data ADD 
+unit varchar (16);
+
+create table units (
+    unit varchar(16) not null,
+    target_unit varchar(16) not null,
+    multiplier double not null,
+    primary key (unit)
+);
+
+insert into units (unit, target_unit, multiplier) 
+values ('c_x100', 'c', 0.01);

db/migrations/V5__firmware_updates.sql

@@ -0,0 +1,24 @@
+create table firmware (
+    id int not null auto_increment,
+    device_id bigint not null,
+    version int not null,
+    path varchar(4096) not null,
+    sha256 char(64),
+    size int,
+    uploaded_at timestamp not null default current_timestamp,
+    primary key (id),
+    foreign key (device_id) references devices(id),
+
+    unique(device_id, version)
+);
+
+create table firmware_updates (
+    id int not null auto_increment,
+    firmware_id int not null,
+    status varchar(32) not null, -- pending / sent / applied / failed
+    requested_at timestamp not null default current_timestamp,
+    applied_at timestamp null,
+
+    primary key (id),
+    foreign key (firmware_id) references firmware(id)
+);