Initial import.

topic/pht/pht.go

@@ -0,0 +1,62 @@
+package pht
+
+import (
+	"context"
+	"encoding/json"
+
+	"git.wntrmute.dev/kyle/sensenet/topic"
+	"github.com/Masterminds/squirrel"
+)
+
+var psql = squirrel.StatementBuilder.PlaceholderFormat(squirrel.Dollar)
+
+func createTable(ctx context.Context, db topic.Database) error {
+	stmt := `CREATE TABLE pht IF NOT EXISTS (
+	id uuid primary key default gen_random_uuid(),
+	source text,
+	timestamp int,
+	temp real,
+	press real,
+	humid real
+);`
+	_, err := db.Exec(ctx, stmt)
+	return err
+}
+
+type reading struct {
+	Timestamp   int64   `json:"timestamp"`
+	Temperature float64 `json:"temperature"`
+	Pressure    float64 `json:"pressure"`
+	Humidity    float64 `json:"relative_humidity"`
+}
+
+func store(ctx context.Context, db topic.Database, packet *topic.Packet) error {
+	r := &reading{}
+	err := json.Unmarshal(packet.Payload, r)
+	if err != nil {
+		return err
+	}
+	stmt := psql.Insert("pht").Columns(
+		"source",
+		"timestamp",
+		"temp",
+		"press",
+		"humid",
+	).Values(packet.Publisher, r.Timestamp, r.Pressure, r.Humidity)
+	query, args, err := stmt.ToSql()
+	if err != nil {
+		return err
+	}
+
+	_, err = db.Exec(ctx, query, args...)
+	return err
+}
+
+var PHT = &topic.Topic{
+	CreateTable: createTable,
+	Store:       store,
+}
+
+func init() {
+	topic.Register("pht", PHT)
+}