56 lines
1.5 KiB
Common Lisp
56 lines
1.5 KiB
Common Lisp
;;; cl-scopes/storage/storage.lisp
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;;;; Common layer for SQL storage functionality.
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(defpackage :scopes/storage
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(:use :common-lisp)
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(:export #:*db-config* #:*db-engine*
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#:make-engine #:make-storage #:db-params
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#:db
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#:drop-table))
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(in-package :scopes/storage)
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(defparameter *db-config* nil)
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(defparameter *db-engine* nil)
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(defparameter *backends*
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'(:dbi #'dbi-make-storage))
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(defvar *db-params*
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'(:sqlite3 (:id-type integer :json-type json)
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:postgres (:id-type bigserial :json-type jsonb)))
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(defclass db-engine ()
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((connect :initarg :connect)
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(params :initarg :params)
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(config :initarg :config)))
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(defclass storage ()
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((engine :initarg :engine)
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(db :reader db)
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(schema)))
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(defun make-storage ()
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(let ((st (make-instance 'storage :engine *db-engine*))
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(db (funcall (slot-value *db-engine* 'connect))))
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(setf (slot-value st 'db) db)
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st))
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(defun db-params (st)
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(slot-value (slot-value st 'engine) 'params))
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(defun drop-table (st tn)
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(let ((sql (sxql:yield (sxql:drop-table tn :if-exists t))))
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(print sql)
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(dbi:do-sql (db st) sql)))
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(defun make-engine ()
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(let* ((config *db-config*)
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(db-type (getf config :db-type))
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(params (getf *db-params* db-type))
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(conn-args (getf config :connect-args)))
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(make-instance 'db-engine
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:params params :config config
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:connect #'(lambda ()
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(apply #'dbi:connect-cached db-type conn-args)))))
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