ebus-racket: db.plt pgsql test; #lang racket/base

1 files changed, 22 insertions, 0 deletions

diff --git a/ebus-racket/db.plt b/ebus-racket/db.plt
new file mode 100644
index 0000000..050eafe
--- /dev/null
+++ b/ebus-racket/db.plt
@@ -0,0 +1,22 @@
+#lang racket/base
+(require (prefix-in db: (planet ryanc/db:1:5)))
+
+(define pgc
+  (db:postgresql-connect #:user "ebus"
+                         #:database "ebus"
+                         #:password "ebus"
+                         #:server "10.2.2.26"))
+
+
+(define (query-sensor-id sensor-name)
+  (db:query-value pgc "select id from sensor where name = $1" sensor-name))
+
+(define (insert sensor-name value-float value-int value-string)
+  (let ([sensor-id (query-sensor-id sensor-name)]
+        [type (cond ((not (void? value-string)) "string")
+                    ((not (void? value-float)) "float")
+                    ((not (void? value-int)) "int"))])
+    (db:query-exec (string-append "INSERT INTO value(timestamp, sensor_id, type, value_float, value_int, value_string) "
+                                  "VALUES (now(), $1, $2, $3, $4, $5)")
+                   sensor-id type value-float value-int value-string)))
+  ;(db:query-exec pgc "select 
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