/
dbstore.go
98 lines (78 loc) · 1.95 KB
/
dbstore.go
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package dbstore
import (
"context"
"fmt"
"log"
"os"
"github.com/joho/godotenv"
"gopkg.in/mgo.v2/bson"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
"go.mongodb.org/mongo-driver/mongo/readpref"
)
const (
envPath = "env/mongo.env"
)
// Create singleton DB
var db *DB
type DB struct {
ctx context.Context
logger *log.Logger
client *mongo.Client
snapshots *mongo.Collection
}
func New(ctx context.Context) error {
logger := log.New(os.Stderr, "[mongo] ", log.LstdFlags)
// Get environment variables and format uri
if err := godotenv.Load(envPath); err != nil {
return err
}
// Write db uri
uri := fmt.Sprintf(
"mongodb://%s:%s@%s:%s/%s",
os.Getenv("MONGOUSER"),
os.Getenv("MONGOPASS"),
os.Getenv("MONGOHOST"),
os.Getenv("MONGOPORT"),
os.Getenv("MONGONAME"),
)
// Connect to mongoDB
client, err := mongo.Connect(ctx, options.Client().ApplyURI(uri))
if err != nil {
return err
}
// Get shorthand for snapshots collection
snapshots := client.Database(os.Getenv("MONGONAME")).Collection(os.Getenv("MONGOCOLL"))
// Ping connection to make sure that the database is on
if err = client.Ping(ctx, readpref.Primary()); err != nil {
return err
}
// Insert variables inside db object
db = &DB{
ctx: ctx,
client: client,
logger: logger,
snapshots: snapshots,
}
return nil
}
// Close closes the mongoDB connection.
func Close() error {
return db.client.Disconnect(db.ctx)
}
func InsertSnapshot(ctx context.Context, snapshot []byte) error {
var snapDoc interface{}
err := bson.UnmarshalJSON(snapshot, &snapDoc)
if err != nil {
db.logger.Printf("Error inserting snapshot: %s", snapshot)
return err
}
fmt.Printf("%s\n", snapshot)
result, err := db.snapshots.InsertOne(ctx, snapDoc)
if err != nil {
db.logger.Printf("Error inserting snapshot: %s", err.Error())
return err
}
db.logger.Printf("Inserted document with _id: %d", result.InsertedID)
return nil
}