service backend

api/pkg/db/tseries/factory.go

@@ -0,0 +1,13 @@
+package tseries
+
+import (
+	"context"
+
+	"github.com/tech/sendico/pkg/db/internal/mongo/tseriesimp"
+	tsoptions "github.com/tech/sendico/pkg/db/tseries/options"
+	"go.mongodb.org/mongo-driver/mongo"
+)
+
+func CreateMongoTimeSeries(ctx context.Context, db *mongo.Database, tsOpts *tsoptions.Options) (TimeSeries, error) {
+	return tseriesimp.NewMongoTimeSeriesCollection(ctx, db, tsOpts)
+}

api/pkg/db/tseries/options/options.go

@@ -0,0 +1,23 @@
+package tsoptions
+
+import (
+	"time"
+)
+
+type Granularity string
+
+const (
+	TSGSeconds Granularity = "seconds"
+	TSGMinutes Granularity = "minutes"
+	TSGHours   Granularity = "hours"
+)
+
+func (t Granularity) String() string { return string(t) }
+
+type Options struct {
+	Collection  string
+	TimeField   string
+	Granularity Granularity
+	MetaField   string        // optional, can be empty
+	ExpireAfter time.Duration // optional, zero means no TTL
+}

api/pkg/db/tseries/point/interface.go

@@ -0,0 +1,14 @@
+package tspoint
+
+import (
+	"time"
+)
+
+type TimePoint interface {
+	GetTimeStamp() time.Time
+}
+
+type TimePointWithMeta[T any] interface {
+	GetTimeStamp() time.Time
+	GetMeta() T
+}

api/pkg/db/tseries/template.go

@@ -0,0 +1 @@
+package tseries

api/pkg/db/tseries/tseries.go

@@ -0,0 +1,29 @@
+package tseries
+
+import (
+	"context"
+	"time"
+
+	"github.com/tech/sendico/pkg/db/repository/builder"
+	rdecoder "github.com/tech/sendico/pkg/db/repository/decoder"
+	tspoint "github.com/tech/sendico/pkg/db/tseries/point"
+)
+
+// TimeSeries[T] abstracts a Mongo time-series “bucket” of documents of type T.
+type TimeSeries interface {
+	// Aggregate runs an aggregation pipeline on the time-series
+	Aggregate(ctx context.Context, builder builder.Pipeline, decoder rdecoder.DecodingFunc) error
+	// Insert adds a single point into the series.
+	Insert(ctx context.Context, point tspoint.TimePoint) error
+	// InsertMany adds multiple points in one bulk operation.
+	InsertMany(ctx context.Context, points []tspoint.TimePoint) error
+
+	// Query fetches all points whose timeField lies in [from, to).
+	// The 'filter' param is an optional Mongo-style query on meta or other fields.
+	Query(
+		ctx context.Context,
+		decoder rdecoder.DecodingFunc,
+		filter builder.Query,
+		from, to *time.Time,
+	) error
+}