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plugin.clj
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plugin.clj
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(ns com.fulcrologic.rad.database-adapters.sql.plugin
(:require
[com.fulcrologic.fulcro.algorithms.do-not-use :refer [deep-merge]]
[com.fulcrologic.rad.database-adapters.sql :as sql]
[com.fulcrologic.rad.database-adapters.sql.result-set :as sql.rs]
[com.wsscode.pathom.core :as p]
[com.fulcrologic.rad.database-adapters.sql.vendor :as vendor]
[taoensso.timbre :as log]))
(sql.rs/coerce-result-sets!)
(defn pathom-plugin
"A pathom plugin that adds the necessary SQL connections and databases to the pathom env for
a given request. Requires a database-mapper, which is a
`(fn [pathom-env] {schema-name connection-pool})` for a given request.
You should also pass the general config if possible, which should have an ::sql/databases key. This allows the
correct vendor adapter to be selected for each database.
The resulting pathom-env available to all resolvers will then have:
- `::sql.plugin/connection-pools`: The result of the database-mapper.
This plugin should run before (be listed after) most other plugins in the plugin chain since
it adds connection details to the parsing env.
"
([database-mapper]
(pathom-plugin database-mapper {}))
([database-mapper config]
(let [database-configs (get config ::sql/databases)
default-adapter (vendor/->H2Adapter)
vendor-adapters (reduce-kv
(fn [acc k v]
(let [{:sql/keys [vendor schema]} v
adapter (case vendor
:postgresql (do
(log/info k "using PostgreSQL Adapter for schema" schema)
(vendor/->PostgreSQLAdapter))
:h2 (do
(log/info k "using H2 Adapter for schema" schema)
(vendor/->H2Adapter))
default-adapter)]
(assoc acc schema adapter)))
{}
database-configs)]
(p/env-wrap-plugin
(fn [env]
(let [database-connection-map (database-mapper env)]
(assoc env
::sql/default-adapter default-adapter
::sql/adapters vendor-adapters
::sql/connection-pools database-connection-map)))))))