golang-mongo-pool

This repository is uploaded for academic learning of database pooling class. I have used official golang mongo-driver for mongodb.

For pooling following functions are required in class:

1. Init(string)
2. CreateConnection() (*mongo.Client, error)
3. GetDatabase() (*mongo.Database, error)
4. GetBusyConnectionsCount() int
5. GetMaxConnections() int
6. GetMinConnections() int
7. GetOpenConnections() []*mongo.Client
8. GetOpenConnectionsCount() int
9. GetPoolName() string
10. GetTimeOut() time.Duration
11. SetErrorOnBusy()
12. SetPoolSize(uint32, uint32)
13. TerminateConnection(*mongo.Client)

Init(string)

This function is use for initializing important config of mongo db eg: connection client

CreateConnection() (*mongo.Client, error)

This function is used as getObject of pooling class. It will return new connection if required on calling.

GetDatabase() (*mongo.Database, error)

This function is call to initialize database and return db instance from mongo client.

GetBusyConnectionsCount() int

This Function return no of busy connection count.

GetMaxConnections() int

This function return count of maximum allowed connections in pool.

GetMinConnections() int

This function return count of minimum allowed connections in pool.

GetOpenConnections() []*mongo.Client

This function return all the open connection instances in pool.

GetOpenConnectionsCount() int

This function return count of open connections in pool.

GetPoolName() string

This function return pool name. Default is root

GetTimeOut() time.Duration

This function return timeout duration of connection in pool.

SetErrorOnBusy()

If this function is called then if all connections are busy CreateConnection() function will return MongoPoolError.

SetPoolSize(uint32, uint32)

This will resize mongo pool without affecting currently open connection. This function still need to be implemented. All PR for this are welcome.

TerminateConnection(*mongo.Client)

This will terminate the connection and release same object from pool.