examples/jamstack: implemented database integration with RDS

Signed-off-by: Sam Alba <sam.alba@gmail.com>

examples/jamstack/database.cue

@@ -0,0 +1,41 @@
+package main
+
+import (
+	"encoding/base64"
+	"dagger.io/aws/rds"
+)
+
+database: {
+	let slug = name
+	dbType: "mysql"
+
+	db: rds.#CreateDB & {
+		config:    infra.awsConfig
+		name:      slug
+		dbArn:     infra.rdsInstanceArn
+		"dbType":  dbType
+		secretArn: infra.rdsAdminSecretArn
+	}
+
+	user: rds.#CreateUser & {
+		config:    infra.awsConfig
+		dbArn:     infra.rdsInstanceArn
+		"dbType":  dbType
+		secretArn: infra.rdsAdminSecretArn
+		username:  slug
+		// FIXME: make it secure (generate infra side?)
+		password:      base64.Encode(null, "pwd-\(slug)")
+		grantDatabase: db.out
+	}
+
+	instance: rds.#Instance & {
+		config: infra.awsConfig
+		dbArn:  infra.rdsInstanceArn
+	}
+
+	hostname: instance.hostname
+	port:     instance.port
+	dbName:   db.out
+	username: user.out
+	password: user.password
+}