initial commit

This commit is contained in:
2024-08-07 00:20:45 +03:00
commit fbe18d86be
6 changed files with 395 additions and 0 deletions

View File

@ -0,0 +1,15 @@
package entities
import "time"
type DeviceID string
type DeviceStatistics struct {
ID DeviceID
IncomingTrafficBytes int
OutgoingTrafficBytes int
IncomingRPS int
ReadRPS int
WriteRPS int
UpdatedAt time.Time
}

View File

@ -0,0 +1,126 @@
package mongo
import (
"context"
"errors"
"fmt"
"time"
"git.loyso.art/frx/devsim/internal/entities"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
"go.mongodb.org/mongo-driver/mongo/readpref"
)
func Dial(ctx context.Context, uri string) (*repository, error) {
opts := options.Client().ApplyURI(uri)
if err := opts.Validate(); err != nil {
return nil, fmt.Errorf("validating config: %w", err)
}
client, err := mongo.Connect(ctx, opts)
if err != nil {
return nil, fmt.Errorf("connecting to mongo: %w", err)
}
err = client.Ping(ctx, readpref.Primary())
if err != nil {
return nil, fmt.Errorf("pinging mongo database: %w", err)
}
return &repository{client: client}, nil
}
type repository struct {
client *mongo.Client
}
func (r *repository) StatsRepository() statsRepository {
return statsRepository{
collection: r.client.Database("bench").Collection("device_stats"),
}
}
type statsRepository struct {
collection *mongo.Collection
}
type deviceStatsDB struct {
DeviceID string `bson:"_id"`
IncomingTraffic int `bson:"inc_traffic"`
OutgoinfTraffic int `bson:"out_traffic"`
IncomingRPS int `bson:"inc_rps"`
ReadRPS int `bson:"read_rps"`
WriteRPS int `bson:"write_rps"`
UpdatedAt time.Time `bson:"updated_at"`
}
func (s deviceStatsDB) asDomain() entities.DeviceStatistics {
return entities.DeviceStatistics{
ID: entities.DeviceID(s.DeviceID),
IncomingTrafficBytes: s.IncomingTraffic,
OutgoingTrafficBytes: s.OutgoinfTraffic,
IncomingRPS: s.IncomingRPS,
ReadRPS: s.ReadRPS,
WriteRPS: s.WriteRPS,
UpdatedAt: s.UpdatedAt,
}
}
func (r statsRepository) Upsert(ctx context.Context, id entities.DeviceID, stats entities.DeviceStatistics) error {
opts := options.Update().SetUpsert(true)
filter := bson.D{
{
Key: "_id",
Value: id,
},
}
document := deviceStatsDB{
DeviceID: string(id),
IncomingTraffic: stats.IncomingTrafficBytes,
OutgoinfTraffic: stats.OutgoingTrafficBytes,
IncomingRPS: stats.IncomingRPS,
ReadRPS: stats.ReadRPS,
WriteRPS: stats.WriteRPS,
UpdatedAt: time.Now(),
}
_, err := r.collection.UpdateOne(ctx, filter, document, opts)
if err != nil {
return fmt.Errorf("inserting: %w", err)
}
return nil
}
func (r statsRepository) List(ctx context.Context) (out []entities.DeviceStatistics, err error) {
count, err := r.collection.EstimatedDocumentCount(ctx)
if err != nil {
return nil, fmt.Errorf("getting estimated document count: %w", err)
}
out = make([]entities.DeviceStatistics, 0, count)
cursor, err := r.collection.Find(ctx, bson.D{})
if err != nil {
return nil, fmt.Errorf("finding documents: %w", err)
}
defer func() {
errClose := cursor.Close(ctx)
err = errors.Join(err, errClose)
}()
for cursor.Next(ctx) {
var stat deviceStatsDB
err = cursor.Decode(&stat)
if err != nil {
return nil, fmt.Errorf("decoding item: %w", err)
}
out = append(out, stat.asDomain())
}
return out, nil
}

154
internal/store/pg/store.go Normal file
View File

@ -0,0 +1,154 @@
package pg
import (
"context"
"fmt"
"time"
"git.loyso.art/frx/devsim/internal/entities"
"github.com/jackc/pgx/v5/pgxpool"
)
func Dial(ctx context.Context, addr string) (*repository, error) {
config, err := pgxpool.ParseConfig(addr)
if err != nil {
return nil, fmt.Errorf("parsing config: %w", err)
}
pool, err := pgxpool.NewWithConfig(ctx, config)
if err != nil {
return nil, fmt.Errorf("connecting to db: %w", err)
}
return &repository{db: pool}, nil
}
type repository struct {
db *pgxpool.Pool
}
func (r *repository) StatsRepository() statsRepository {
return statsRepository{
db: r.db,
}
}
type statsRepository struct {
db *pgxpool.Pool
}
type deviceStatsDB struct {
DeviceID string
IncomingTraffic int
OutgoingTraffic int
IncomingRPS int
ReadRPS int
WriteRPS int
UpdatedAt time.Time
}
func (s deviceStatsDB) asDomain() entities.DeviceStatistics {
return entities.DeviceStatistics{
ID: entities.DeviceID(s.DeviceID),
IncomingTrafficBytes: s.IncomingTraffic,
OutgoingTrafficBytes: s.OutgoingTraffic,
IncomingRPS: s.IncomingRPS,
ReadRPS: s.ReadRPS,
WriteRPS: s.WriteRPS,
UpdatedAt: s.UpdatedAt,
}
}
func (r statsRepository) Upsert(ctx context.Context, id entities.DeviceID, stats entities.DeviceStatistics) error {
const query = `INSERT INTO public.stats (
device_id,
inc_traffic,
out_traffic,
inc_rps,
read_rps,
write_rps,
updated_at
) VALUES (
$1,
$2,
$3,
$4,
$5,
$6,
$7,
) ON CONFLICT(device_id) DO UPDATE SET
inc_traffic = EXCLUDED.inc_traffic,
out_traffic = EXCLUDED.out_traffic,
inc_rps = EXCLUDED.inc_rps,
read_rps = EXCLUDED.read_rps,
write_rps = EXCLUDED.write_rps,
updated_at = EXCLUDED.updated_at
RETURNING id;
`
_, err := r.db.Exec(
ctx, query,
id,
stats.IncomingTrafficBytes,
stats.OutgoingTrafficBytes,
stats.IncomingRPS,
stats.ReadRPS,
stats.WriteRPS,
)
if err != nil {
return fmt.Errorf("executing query: %w", err)
}
return nil
}
func (r statsRepository) List(ctx context.Context) (out []entities.DeviceStatistics, err error) {
var count int
err = r.db.QueryRow(ctx, `SELECT COUNT(device_id) FROM public.stats`).Scan(&count)
if err != nil {
return nil, fmt.Errorf("getting count: %w", err)
}
out = make([]entities.DeviceStatistics, 0, count)
const query = `SELECT
device_id,
inc_traffic,
out_traffic,
inc_rps,
read_rps,
write_rps,
updated_at
FROM public.stats;
`
rows, err := r.db.Query(ctx, query)
if err != nil {
return nil, fmt.Errorf("querying: %w", err)
}
defer rows.Close()
for rows.Next() {
var stat deviceStatsDB
err = rows.Scan(
&stat.DeviceID,
&stat.IncomingTraffic,
&stat.OutgoingTraffic,
&stat.IncomingRPS,
&stat.ReadRPS,
&stat.WriteRPS,
&stat.UpdatedAt,
)
if err != nil {
return nil, fmt.Errorf("scanning row: %w", err)
}
out = append(out, stat.asDomain())
}
if err = rows.Err(); err != nil {
return nil, fmt.Errorf("checking rows err: %w", err)
}
return out, nil
}

12
internal/store/store.go Normal file
View File

@ -0,0 +1,12 @@
package store
import (
"context"
"git.loyso.art/frx/devsim/internal/entities"
)
type Stats interface {
Upsert(context.Context, entities.DeviceID, entities.DeviceStatistics) error
List(context.Context) ([]entities.DeviceStatistics, error)
}