tesla-mongo-connect

An addon to tesla-microservice that allows to read and write to mongodb.

Usage

You can initialize several instances of tesla-mongo-connect in your tesla-microservice. In the simple case each one connects to a single database on a mongodb. The configurations for the individual connections are distinguished by prefix:

test-db1.mongo.host=localhost
test-db1.mongo.dbname=teslatest
test-db1.mongo.user=
test-db1.mongo.passwd=
test-db.mongo.socket-timeout=30
test-db.mongo.socket-keep-alive=true
test-db.mongo.connection-timeout=2000


test-db2.mongo.host=other-url
test-db2.mongo.dbname=teslaprod
test-db2.mongo.user=user
test-db2.mongo.passwd=passwd
test-db2.mongo.socket-timeout=42
test-db2.mongo.connection-timeout=3000

Now you can establish two connections like this:

(defn example-system [runtime-config]
  (-> (system/empty-system (merge {:name "mongo-example-service"} runtime-config))
      (assoc :mongo1
             (c/using (mongo/new-mongo "test-db1") [:config :metering :app-status]))
      (assoc :mongo2
             (c/using (mongo/new-mongo "test-db2") [:config :metering :app-status]))
      (assoc :foo (foo/new-foo) [:mongo1 :mongo2])
      (c/system-using {:server [:example-page]})))

In the component :foo you could then find the document with the id of "foo" in the collection "my-collection" in the database :mongo1 like this:

  (mongo/find-one-checked! (:mongo1 self) "my-collection" {:_id "foo"})

For a working example see the mongo-example. in tesla-examples.

TODO

• Add description for (optional) dbname switching functionality

Initial Contributors

Christian Stamm, Kai Brandes, Daley Chetwynd, Felix Bechstein, Ralf Sigmund, Florian Weyandt

License

Apache License