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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| package repo | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
|
|
||
| "go.mongodb.org/mongo-driver/bson" | ||
| "go.mongodb.org/mongo-driver/bson/primitive" | ||
| "go.mongodb.org/mongo-driver/mongo" | ||
| ) | ||
|
|
||
| // Address holds information about unique PublicKey. | ||
| type Address struct { | ||
| ID primitive.ObjectID `json:"-" bson:"_id,omitempty"` | ||
| PublicKey string `json:"public_key" bson:"public_key"` | ||
| } | ||
|
|
||
| // WriteAddress writes unique address to the database. | ||
| func (db DataBase) WriteAddress(ctx context.Context, address Address) error { | ||
| address.ID = primitive.NilObjectID | ||
| if address.PublicKey == "" { | ||
| return errors.New("public key is empty") | ||
| } | ||
|
|
||
| if _, err := db.inner.Collection(addressesCollection).InsertOne(ctx, address); err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| // CheckAddressExists checks if address exists in the database. | ||
| func (db DataBase) CheckAddressExists(ctx context.Context, address string) (bool, error) { | ||
| if address == "" { | ||
| return false, errors.New("public key is empty") | ||
| } | ||
|
|
||
| res := db.inner.Collection(addressesCollection).FindOne(ctx, bson.M{"public_key": address}) | ||
| if res.Err() != nil { | ||
| if res.Err() == mongo.ErrNoDocuments { | ||
| return false, nil | ||
| } | ||
| return false, res.Err() | ||
| } | ||
|
|
||
| return true, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| package repo | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
|
|
||
| "github.com/bartossh/The-Accountant/block" | ||
| "go.mongodb.org/mongo-driver/bson" | ||
| "go.mongodb.org/mongo-driver/mongo/options" | ||
| ) | ||
|
|
||
| // LastBlock returns last block from the database. | ||
| func (db DataBase) LastBlock(ctx context.Context) (block.Block, error) { | ||
| var b []block.Block | ||
|
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| opts := options.Find().SetSort(bson.M{"index": 1}).SetLimit(1) | ||
|
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| curs, err := db.inner.Collection(blocksCollection).Find(ctx, bson.M{}, opts) | ||
| if err != nil { | ||
| return block.Block{}, err | ||
| } | ||
|
|
||
| if err := curs.All(ctx, &b); err != nil { | ||
| return block.Block{}, err | ||
| } | ||
|
|
||
| if len(b) == 0 { | ||
| return block.Block{}, errors.New("unreachable code when querying last block") | ||
| } | ||
|
|
||
| return b[0], nil | ||
| } | ||
|
|
||
| // ReadBlockByHash returns block with given hash. | ||
| func (db DataBase) ReadBlockByHash(ctx context.Context, hash [32]byte) (block.Block, error) { | ||
| var b block.Block | ||
| if err := db.inner.Collection(blocksCollection).FindOne(ctx, bson.M{"hash": hash}).Decode(&b); err != nil { | ||
| return block.Block{}, err | ||
| } | ||
| return b, nil | ||
| } | ||
|
|
||
| // WriteBlock writes block to the database. | ||
| func (db DataBase) WriteBlock(ctx context.Context, block block.Block) error { | ||
| if _, err := db.inner.Collection(blocksCollection).InsertOne(ctx, block); err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } |
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