everest.pg.handler.middleware — sundbp/everest.pg 0.4.0-alpha4

wrap-connection clj

(wrap-connection handler {:handler.middleware/keys [db connection-key]})

Opens a connection using the provided db spec which might (and should) be a connection pool, a JDBC URL or a connection description as specified in the clojure.jdbc docs.

Accepts a:

• db - dbspec or pool
• connection-key - a key under which the connection will be assoced to the event. None by default.

wrap-json-state clj

(wrap-json-state handler
                 {:handler.middleware/keys [state-key json-type]
                  :or {state-key :handler/state json-type :jsonb}})

Wraps the result of the handler invocation so that it would be treated as a Json data type by the Postgres JDBC driver.

Accepts the following options:

• state-key - :state by default, where the state is stored
• json-type - :jsonb by default, either :json or :jsonb

wrap-position clj

(wrap-position handler
               {:handler.middleware/keys [handler-type handler-id] :as opts})

wrap-state clj

(wrap-state handler
            {:handler.middleware/keys [handler-type handler-id] :as opts})

wrap-tx clj

(wrap-tx handler
         {:handler.middleware/keys [tx-options tx-during-catch-up?]
          :or {tx-options {} tx-during-catch-up? true}})

Wraps the event handler into a transaction. Must be run inside the wrap-connection handler.