MongoDB

MongoDB is able to be used as an external data source. Either an entire cluster or a single collection may be added as a data source.

Connect a MongoDB database

An entire MongoDB database can be added using the CREATE EXTERNAL DATABASE command.

There are two equivalent formats. In both formats, database-name will be the name of the database inside GlareDB. This cannot be qualified, and must be unique across all other databases in the deployment.

Database long format 

CREATE EXTERNAL DATABASE <database-name>
  FROM mongo
  OPTIONS (
    protocol = '<protocol>',
    host = '<host>',
    port = '<port>',
    user = '<user>',
    password = '<password>',
  );

Database long format options

Field Description
protocol The protocol to user. Either mongodb or mongodb+srv.
host The host that the MongoDB service is available on.
port The port the MongoDB database is available on. Should only be specified if protocol is mongodb.
user A MongoDB database user.
password The password associated to the above user

Database compact format 

CREATE EXTERNAL DATABASE <database-name>
  FROM mongo
  OPTIONS (
    connection_string = '<connection-string>',
  );

Database compact format options

Field Description
connection_string A MongoDB connection string.

Connect a single table

Adding an external table can be done through the CREATE EXTERNAL TABLE command.

There are two equivalent formats. In both formats, table-name will be the name of the database inside GlareDB. table-name may optionally be qualified with a schema name.

Table long format 

CREATE EXTERNAL TABLE <table-name>
  FROM mongo
  OPTIONS (
    protocol = '<protocol>',
    host = '<host>',
    port = '<port>',
    user = '<user>',
    password = '<password>',
    database = '<database>',
    collection = '<collection>',
  );

Table long format options

Field Description
protocol The protocol to user. Either mongodb or mongodb+srv.
host The host that the MongoDB service is available on.
port The port the MongoDB database is available on. Should only be specified if protocol is mongodb.
user A MongoDB database user.
password The password associated to the above user
database The name of the database
collection The name of the collection

Table compact format 

CREATE EXTERNAL TABLE <table-name>
  FROM mongo
  OPTIONS (
    connection_string = '<connection-string>',
    database = '<database>',
    collection = '<collection>',
  );

Table compact format options

Field Description
connection_string Key value string containing connection details
database The name of the schema where the table resides
collection The name of the collection