Differences

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--- user:kluong:feature_idea_-_staging_environment [2021/10/21 20:43]
kluong
+++ user:kluong:feature_idea_-_staging_environment [2021/10/23 17:41]
kluong [Gateway - testing changes]
@@ Line 237: / Line 237: @@
 <code>
-psql -U control_tower_staging -d control_tower_staging -c "SHOW TABLES"
+psql -U control_tower_staging -d control_tower_staging -c "SELECT * FROM pg_catalog.pg_tables WHERE schemaname='public'"
 </code>
-==== Gateway Changes ====
+==== Gateway Change - ability to pass in a database URI ====
 I mentioned earlier we'll have to change the way the gateway works. This is the way the current code connects to the database:
@@ Line 273: / Line 273: @@
 </code>
 You'd need to see some RX frames on the tty device to test this properly though, since the gateway doesn't reach out to the database unless it sees a message to decode.
-To get this to work in production, you would have to modify the run_production.sh script, and also update the repository in production.
+To get this to work in production, you would have to modify the run_production.sh script, and also update the repository production.
+==== Gateway - testing changes ====
+Options for testing
+  * Deploy to production - see what happens
+  * Deploy to staging - see what happens
+  * Setup an personal network (on your laptop, or maybe on the server)
+  * Connect the gateway to a "fake" xbee virtually, using a pty and another script
+  * Mock out the serial device completely in python
+It's not necessarily practical to have hardware to test with all of the time and often hardware might not be available anyways. Luckily, with software we can work around this.
+**Note: development for the gateway should generally be done in a linux-based environment.**
+You can make a "fake" xbee network using the following python script:
+<code>
+import os
+import errno
+import time
+def symlink_force(target, link_name):
+    try:
+        os.symlink(target, link_name)
+    except OSError as e:
+        if e.errno == errno.EEXIST:
+            os.remove(link_name)
+            os.symlink(target, link_name)
+        else:
+            raise e
+def valid_packets():
+    packets = {}
+    packets['heartbeat'] = "\x7e\x00\x16\x90\x00\x7d\x33\xa2\x00\x40\xe6\x4b\x5e\x03\xfd\x01\x00\x00\xff\xff\xf0\xfa\x23\x00\x2b\x02\xb2"
+    packets['apple'] = "\x7e\x00\x22\x90\x00\x7d\x33\xa2\x00\x40\x9f\x27\xa7\x29\x6c\x01\x01\x00\xff\xff\x80\x6f\x69\x3d\x06\x0f\x71\x7d\x33\x5a\x8a\x01\x00\x76\x01\x22\x00\x6e\x09\x55"
+    packets['cranberry'] = "\x7e\x00\x22\x90\x00\x7d\x33\xa2\x00\x41\x25\xe5\x88\x0c\x83\x01\x02\x00\xff\xff\x7c\xf3\x05\x00\xba\x0f\x5c\x08\x05\x00\x20\x73\x3b\x00\xdd\x8b\x01\x00\x7a"
+    packets['dragonfruit'] = "\x7e\x00\x24\x90\x00\x7d\x33\xa2\x00\x40\xe6\x72\x7d\x5e\x30\x18\x01\x03\x00\xff\xff\x30\xc8\x07\x00\x6b\x0d\xf4\x00\x06\x00\x00\x00\xb6\x72\x37\x00\xfe\x8b\x01\x00\x00"
+    packets['snapdragon'] = "\x7e\x00\x22\x90\x00\x7d\x33\xa2\x00\x40\xa3\x53\x7d\x5e\x20\x9c\x01\x04\x00\xff\xff\x12\xe4\x49\x00\xca\x0d\x44\x0c\x2c\x31\x01\x00\x2f\x01\x34\x00\x64\x00\xbb"
+    return packets
+master_fd, slave_fd = os.openpty()
+symlink_force(os.ttyname(slave_fd), '/tmp/fakexbee')
+packets = valid_packets()
+while True:
+    for key in packets:
+        os.write(master_fd, bytes(packets[key]))
+        time.sleep(1)
+</code>