Easy error to find , but I was impress how fast I got a response from chat gpt …(wemo driver from SmartThings beta GitHub)
@nayelyz
Error analysis for SmartThings chat gpt
Can you find the error in that code for SmartThings , dimmer is been discovery as a plug.
local capabilities = require “st.capabilities”
local command_handlers = require “command_handlers”
local discovery = require “discovery”
local protocol = require “protocol”
local SubscriptionServer = require “subscription_server”
local cosock = require “cosock”
local Driver = require “st.driver”
local socket = require “cosock.socket”
local log = require “log”
local utils = require “st.utils”
– maps model name to profile name
local profiles = {
[“Insight”] = “wemo.mini-smart-plug.v1”,
[“Socket”] = “wemo.mini-smart-plug.v1”,
[“Dimmer”] = “wemo.mini-smart-plug.v1”,
[“Motion”] = “wemo.motion-sensor.v1”,
[“Lightswitch”] = “wemo.light-switch.v1”,
}
local function device_removed(driver, device)
driver.server:prune()
end
–TODO remove function in favor of “st.utils” function once
–all hubs have 0.46 firmware
local function backoff_builder(max, inc, rand)
local count = 0
inc = inc or 1
return function()
local randval = 0
if rand then
— We use this pattern because the version of math.random()
— that takes a range only works for integer values and we
— want floating point.
randval = math.random() * rand * 2 - rand
end
local base = inc * (2 ^ count - 1)
count = count + 1
-- ensure base backoff (not including random factor) is less than max
if max then base = math.min(base, max) end
-- ensure total backoff is >= 0
return math.max(base + randval, 0)
end
end
local function device_init(driver, device)
– at the time of authoring, there is a bug with LAN Edge Drivers where init
– may not be called on every device that gets added to the driver
if device:get_field(“init_started”) then
return
end
device:set_field(“init_started”, true)
device.log.info_with({ hub_logs = true }, “initializing device”)
local ip = device:get_field(“ip”)
local port = device:get_field(“port”)
– Carry over DTH discovered ip/port during migration, since wemo devices often
– stop responding to SSDP requests after being on the network for a long time.
if not (ip and port) and device.data and device.data.ip and device.data.port then
local nu = require “st.net_utils”
ip = nu.convert_ipv4_hex_to_dotted_decimal(device.data.ip)
port = tonumber(device.data.port, 16)
device:set_field(“ip”, ip, { persist = true })
device:set_field(“port”, port, { persist = true })
–try to get the metadata for this device so scan nearby doesn’t create a device
–for a migrated device that has yet to be rediscovered on the lan
local meta = discovery.fetch_device_metadata(string.format(“http://%s:%s/setup.xml”, ip, port))
if meta then
device:set_field(“serial_num”, meta.serial_num, { persist = true })
else
device.log.warn_with({ hub_logs = true },
“Unable to fetch migrated device serial number, driver discovery may recreate the device.”)
end
end
– Setup the polling and subscription
local jitter = 2 * math.random()
if driver.server and ip and port then
device.thread:call_with_delay(jitter, function() driver.server:subscribe(device) end)
end
device.thread:call_on_schedule(
3600 + jitter,
function() driver.server:subscribe(device) end,
device.id … “subcribe”
)
device.thread:call_on_schedule(
60 + jitter,
function() protocol.poll(device) end,
device.id … “poll”
)
–Rediscovery task. Needs task because if device init doesn’t return, no events are handled
– on the device thread.
cosock.spawn(function()
local backoff = backoff_builder(300, 1, 0.25)
local info
while true do
discovery.find(device.device_network_id, function(found) info = found end)
if info then break end
local tm = backoff()
device.log.info_with({ hub_logs = true }, string.format(“Failed to initialize device, retrying after delay: %.1f”, tm))
socket.sleep™
end
if not info or not info.ip or not info.serial_num then
device.log.error_with({ hub_logs = true }, "device not found on network")
device:offline()
return
end
device.log.info_with({ hub_logs = true },"Device init re-discovered device on the lan")
device:online()
--Sometimes wemos just stop responding to ssdp even though they are connected to the network.
--Persist to avoid issues with driver restart
device:set_field("ip", info.ip, { persist = true })
device:set_field("port", info.port, { persist = true })
device:set_field("serial_num", info.serial_num, { persist = true })
if driver.server and (ip ~= info.ip or port ~= info.port) then
device.log.debug("Resubscribe because ip/port has changed since last discovery")
driver.server:subscribe(device)
end
end, device.id…" discovery")
end
local function device_added(driver, device)
device_init(driver, device)
end
local function resubscribe_all(driver)
local device_list = driver:get_devices()
for _, device in ipairs(device_list) do
driver.server:unsubscribe(device)
driver.server:subscribe(device)
end
end
local function lan_info_changed_handler(driver, hub_ipv4)
if driver.server.listen_ip == nil or hub_ipv4 ~= driver.server.listen_ip then
log.info_with({ hub_logs = true },
“hub IPv4 address has changed, restarting listen server and resubscribing”)
driver.server:shutdown()
driver.server = SubscriptionServer:new_server()
resubscribe_all(driver)
end
end
local function discovery_handler(driver, _, should_continue)
local known_devices = {}
local found_devices = {}
local device_list = driver:get_devices()
for _, device in ipairs(device_list) do
local serial_num = device:get_field(“serial_num”)
–Note MAC is not used due to MAC mismatch for migrated devices
if serial_num ~= nil then known_devices[serial_num] = true end
end
log.info_with({ hub_logs = true }, “Starting discovery scanning”)
while should_continue() do
discovery.find(
nil,
function(device)
local id = device.id
local ip = device.ip
local serial_num = device.serial_num
if not known_devices[serial_num] and not found_devices[serial_num] then
found_devices[serial_num] = true
local name = device.name or "Unnamed Wemo"
local profile_name = device.model
if string.find(name, "Motion") then
profile_name = "Motion"
end
local profile = profiles[profile_name]
if profile then
-- add device
log.info_with({ hub_logs = true }, string.format("creating %s device [%s] at %s", name, id, ip))
local create_device_msg = {
type = "LAN",
device_network_id = id,
label = name,
profile = profile,
manufacturer = "Belkin",
model = device.model,
vendor_provided_label = device.name,
}
log.trace("create device with:", utils.stringify_table(create_device_msg))
assert(
driver:try_create_device(create_device_msg),
"failed to create device record"
)
else
log.warn("discovered device is an unknown model:", tostring(device.model))
end
else
log.debug("device already known by driver")
end
end
)
end
log.info_with({ hub_logs = true }, “Discovery scanning ended”)
end
– Build driver context table
local wemo = Driver(“wemo”, {
discovery = discovery_handler,
lifecycle_handlers = {
init = device_init,
removed = device_removed,
added = device_added,
},
lan_info_changed_handler = lan_info_changed_handler,
capability_handlers = {
[capabilities.switch.ID] = {
[capabilities.switch.commands.on.NAME] = command_handlers.handle_switch_on,
[capabilities.switch.commands.off.NAME] = command_handlers.handle_switch_off,
},
[capabilities.switchLevel.ID] = {
[capabilities.switchLevel.commands.setLevel.NAME] = command_handlers.handle_set_level,
},
[capabilities.refresh.ID] = {
[capabilities.refresh.commands.refresh.NAME] = command_handlers.handle_refresh,
}
}
})
log.info(“Spinning up subscription server and running driver”)
– TODO handle case where the subscription server is not started
wemo.server = SubscriptionServer.new_server()
wemo:run()
There is no specific error mentioned in the code, but based on my analysis, there are some areas in the code that could potentially lead to issues:
In the “profiles” table, all devices are mapped to the same profile: “wemo.mini-smart-plug.v1”. This might be an issue because different types of devices may have different capabilities and may require different profiles.
The “device_removed” function is defined but it is not registered as a callback function anywhere. This function is used to remove a device from the driver’s subscription list when the device is removed. If this function is not registered, the subscription list may become out-of-sync with the actual devices on the network.
The “backoff_builder” function is defined locally in the “device_init” function. If this function is used in multiple places, it should be defined globally so that it can be reused.
The “device_init” function sets the “init_started” field on the device to true at the beginning of the function. However, if the function is called again before it completes, the field will already be set and the function will exit early. This might be an issue if the function needs to be re-run for some reason (e.g., a device is rediscovered on the network).
The “cosock.spawn” function is used to spawn a new coroutine in the “device_init” function. This might be an issue if the coroutine is not properly managed and does not exit when it should. If the coroutine continues to run indefinitely, it could lead to memory leaks or other issues.
In the “device_init” function, there are several calls to “device.thread:call_with_delay” and “device.thread:call_on_schedule”. These functions schedule a callback function to be run after a certain amount of time has elapsed. If these functions are called multiple times for the same device, it could lead to a buildup of scheduled functions and potentially cause issues. It might be better to cancel any existing scheduled functions before scheduling a new one.
zild06@gmail.com
Can you find the error in that code for SmartThings , wemo dimmer been recognize as a plug , here the code .
local capabilities = require “st.capabilities”
local command_handlers = require “command_handlers”
local discovery = require “discovery”
local protocol = require “protocol”
local SubscriptionServer = require “subscription_server”
local cosock = require “cosock”
local Driver = require “st.driver”
local socket = require “cosock.socket”
local log = require “log”
local utils = require “st.utils”
– maps model name to profile name
local profiles = {
[“Insight”] = “wemo.mini-smart-plug.v1”,
[“Socket”] = “wemo.mini-smart-plug.v1”,
[“Dimmer”] = “wemo.mini-smart-plug.v1”,
[“Motion”] = “wemo.motion-sensor.v1”,
[“Lightswitch”] = “wemo.light-switch.v1”,
}
local function device_removed(driver, device)
driver.server:prune()
end
–TODO remove function in favor of “st.utils” function once
–all hubs have 0.46 firmware
local function backoff_builder(max, inc, rand)
local count = 0
inc = inc or 1
return function()
local randval = 0
if rand then
— We use this pattern because the version of math.random()
— that takes a range only works for integer values and we
— want floating point.
randval = math.random() * rand * 2 - rand
end
local base = inc * (2 ^ count - 1)
count = count + 1
-- ensure base backoff (not including random factor) is less than max
if max then base = math.min(base, max) end
-- ensure total backoff is >= 0
return math.max(base + randval, 0)
end
end
local function device_init(driver, device)
– at the time of authoring, there is a bug with LAN Edge Drivers where init
– may not be called on every device that gets added to the driver
if device:get_field(“init_started”) then
return
end
device:set_field(“init_started”, true)
device.log.info_with({ hub_logs = true }, “initializing device”)
local ip = device:get_field(“ip”)
local port = device:get_field(“port”)
– Carry over DTH discovered ip/port during migration, since wemo devices often
– stop responding to SSDP requests after being on the network for a long time.
if not (ip and port) and device.data and device.data.ip and device.data.port then
local nu = require “st.net_utils”
ip = nu.convert_ipv4_hex_to_dotted_decimal(device.data.ip)
port = tonumber(device.data.port, 16)
device:set_field(“ip”, ip, { persist = true })
device:set_field(“port”, port, { persist = true })
–try to get the metadata for this device so scan nearby doesn’t create a device
–for a migrated device that has yet to be rediscovered on the lan
local meta = discovery.fetch_device_metadata(string.format(“http://%s:%s/setup.xml”, ip, port))
if meta then
device:set_field(“serial_num”, meta.serial_num, { persist = true })
else
device.log.warn_with({ hub_logs = true },
“Unable to fetch migrated device serial number, driver discovery may recreate the device.”)
end
end
– Setup the polling and subscription
local jitter = 2 * math.random()
if driver.server and ip and port then
device.thread:call_with_delay(jitter, function() driver.server:subscribe(device) end)
end
device.thread:call_on_schedule(
3600 + jitter,
function() driver.server:subscribe(device) end,
device.id … “subcribe”
)
device.thread:call_on_schedule(
60 + jitter,
function() protocol.poll(device) end,
device.id … “poll”
)
–Rediscovery task. Needs task because if device init doesn’t return, no events are handled
– on the device thread.
cosock.spawn(function()
local backoff = backoff_builder(300, 1, 0.25)
local info
while true do
discovery.find(device.device_network_id, function(found) info = found end)
if info then break end
local tm = backoff()
device.log.info_with({ hub_logs = true }, string.format(“Failed to initialize device, retrying after delay: %.1f”, tm))
socket.sleep™
end
if not info or not info.ip or not info.serial_num then
device.log.error_with({ hub_logs = true }, "device not found on network")
device:offline()
return
end
device.log.info_with({ hub_logs = true },"Device init re-discovered device on the lan")
device:online()
--Sometimes wemos just stop responding to ssdp even though they are connected to the network.
--Persist to avoid issues with driver restart
device:set_field("ip", info.ip, { persist = true })
device:set_field("port", info.port, { persist = true })
device:set_field("serial_num", info.serial_num, { persist = true })
if driver.server and (ip ~= info.ip or port ~= info.port) then
device.log.debug("Resubscribe because ip/port has changed since last discovery")
driver.server:subscribe(device)
end
end, device.id…" discovery")
end
local function device_added(driver, device)
device_init(driver, device)
end
local function resubscribe_all(driver)
local device_list = driver:get_devices()
for _, device in ipairs(device_list) do
driver.server:unsubscribe(device)
driver.server:subscribe(device)
end
end
local function lan_info_changed_handler(driver, hub_ipv4)
if driver.server.listen_ip == nil or hub_ipv4 ~= driver.server.listen_ip then
log.info_with({ hub_logs = true },
“hub IPv4 address has changed, restarting listen server and resubscribing”)
driver.server:shutdown()
driver.server = SubscriptionServer:new_server()
resubscribe_all(driver)
end
end
local function discovery_handler(driver, _, should_continue)
local known_devices = {}
local found_devices = {}
local device_list = driver:get_devices()
for _, device in ipairs(device_list) do
local serial_num = device:get_field(“serial_num”)
–Note MAC is not used due to MAC mismatch for migrated devices
if serial_num ~= nil then known_devices[serial_num] = true end
end
log.info_with({ hub_logs = true }, “Starting discovery scanning”)
while should_continue() do
discovery.find(
nil,
function(device)
local id = device.id
local ip = device.ip
local serial_num = device.serial_num
if not known_devices[serial_num] and not found_devices[serial_num] then
found_devices[serial_num] = true
local name = device.name or "Unnamed Wemo"
local profile_name = device.model
if string.find(name, "Motion") then
profile_name = "Motion"
end
local profile = profiles[profile_name]
if profile then
-- add device
log.info_with({ hub_logs = true }, string.format("creating %s device [%s] at %s", name, id, ip))
local create_device_msg = {
type = "LAN",
device_network_id = id,
label = name,
profile = profile,
manufacturer = "Belkin",
model = device.model,
vendor_provided_label = device.name,
}
log.trace("create device with:", utils.stringify_table(create_device_msg))
assert(
driver:try_create_device(create_device_msg),
"failed to create device record"
)
else
log.warn("discovered device is an unknown model:", tostring(device.model))
end
else
log.debug("device already known by driver")
end
end
)
end
log.info_with({ hub_logs = true }, “Discovery scanning ended”)
end
– Build driver context table
local wemo = Driver(“wemo”, {
discovery = discovery_handler,
lifecycle_handlers = {
init = device_init,
removed = device_removed,
added = device_added,
},
lan_info_changed_handler = lan_info_changed_handler,
capability_handlers = {
[capabilities.switch.ID] = {
[capabilities.switch.commands.on.NAME] = command_handlers.handle_switch_on,
[capabilities.switch.commands.off.NAME] = command_handlers.handle_switch_off,
},
[capabilities.switchLevel.ID] = {
[capabilities.switchLevel.commands.setLevel.NAME] = command_handlers.handle_set_level,
},
[capabilities.refresh.ID] = {
[capabilities.refresh.commands.refresh.NAME] = command_handlers.handle_refresh,
}
}
})
log.info(“Spinning up subscription server and running driver”)
– TODO handle case where the subscription server is not started
wemo.server = SubscriptionServer.new_server()
wemo:run()
There seems to be a typo in the last line of the device_init function, where there are three dots (…) at the end instead of a method call. This is likely causing a syntax error.
Based on the context, it seems like the line should be:
lua
Copy code
driver.server:subscribe(device)
instead of:
lua
Copy code
device…
zild06@gmail.com
Find the error in that driver for SmartThings wemo dimmer , the wemo dimmer been detected as a plug.
local capabilities = require “st.capabilities”
local command_handlers = require “command_handlers”
local discovery = require “discovery”
local protocol = require “protocol”
local SubscriptionServer = require “subscription_server”
local cosock = require “cosock”
local Driver = require “st.driver”
local socket = require “cosock.socket”
local log = require “log”
local utils = require “st.utils”
– maps model name to profile name
local profiles = {
[“Insight”] = “wemo.mini-smart-plug.v1”,
[“Socket”] = “wemo.mini-smart-plug.v1”,
[“Dimmer”] = “wemo.mini-smart-plug.v1”,
[“Motion”] = “wemo.motion-sensor.v1”,
[“Lightswitch”] = “wemo.light-switch.v1”,
}
local function device_removed(driver, device)
driver.server:prune()
end
–TODO remove function in favor of “st.utils” function once
–all hubs have 0.46 firmware
local function backoff_builder(max, inc, rand)
local count = 0
inc = inc or 1
return function()
local randval = 0
if rand then
— We use this pattern because the version of math.random()
— that takes a range only works for integer values and we
— want floating point.
randval = math.random() * rand * 2 - rand
end
local base = inc * (2 ^ count - 1)
count = count + 1
-- ensure base backoff (not including random factor) is less than max
if max then base = math.min(base, max) end
-- ensure total backoff is >= 0
return math.max(base + randval, 0)
end
end
local function device_init(driver, device)
– at the time of authoring, there is a bug with LAN Edge Drivers where init
– may not be called on every device that gets added to the driver
if device:get_field(“init_started”) then
return
end
device:set_field(“init_started”, true)
device.log.info_with({ hub_logs = true }, “initializing device”)
local ip = device:get_field(“ip”)
local port = device:get_field(“port”)
– Carry over DTH discovered ip/port during migration, since wemo devices often
– stop responding to SSDP requests after being on the network for a long time.
if not (ip and port) and device.data and device.data.ip and device.data.port then
local nu = require “st.net_utils”
ip = nu.convert_ipv4_hex_to_dotted_decimal(device.data.ip)
port = tonumber(device.data.port, 16)
device:set_field(“ip”, ip, { persist = true })
device:set_field(“port”, port, { persist = true })
–try to get the metadata for this device so scan nearby doesn’t create a device
–for a migrated device that has yet to be rediscovered on the lan
local meta = discovery.fetch_device_metadata(string.format(“http://%s:%s/setup.xml”, ip, port))
if meta then
device:set_field(“serial_num”, meta.serial_num, { persist = true })
else
device.log.warn_with({ hub_logs = true },
“Unable to fetch migrated device serial number, driver discovery may recreate the device.”)
end
end
– Setup the polling and subscription
local jitter = 2 * math.random()
if driver.server and ip and port then
device.thread:call_with_delay(jitter, function() driver.server:subscribe(device) end)
end
device.thread:call_on_schedule(
3600 + jitter,
function() driver.server:subscribe(device) end,
device.id … “subcribe”
)
device.thread:call_on_schedule(
60 + jitter,
function() protocol.poll(device) end,
device.id … “poll”
)
–Rediscovery task. Needs task because if device init doesn’t return, no events are handled
– on the device thread.
cosock.spawn(function()
local backoff = backoff_builder(300, 1, 0.25)
local info
while true do
discovery.find(device.device_network_id, function(found) info = found end)
if info then break end
local tm = backoff()
device.log.info_with({ hub_logs = true }, string.format(“Failed to initialize device, retrying after delay: %.1f”, tm))
socket.sleep™
end
if not info or not info.ip or not info.serial_num then
device.log.error_with({ hub_logs = true }, "device not found on network")
device:offline()
return
end
device.log.info_with({ hub_logs = true },"Device init re-discovered device on the lan")
device:online()
--Sometimes wemos just stop responding to ssdp even though they are connected to the network.
--Persist to avoid issues with driver restart
device:set_field("ip", info.ip, { persist = true })
device:set_field("port", info.port, { persist = true })
device:set_field("serial_num", info.serial_num, { persist = true })
if driver.server and (ip ~= info.ip or port ~= info.port) then
device.log.debug("Resubscribe because ip/port has changed since last discovery")
driver.server:subscribe(device)
end
end, device.id…" discovery")
end
local function device_added(driver, device)
device_init(driver, device)
end
local function resubscribe_all(driver)
local device_list = driver:get_devices()
for _, device in ipairs(device_list) do
driver.server:unsubscribe(device)
driver.server:subscribe(device)
end
end
local function lan_info_changed_handler(driver, hub_ipv4)
if driver.server.listen_ip == nil or hub_ipv4 ~= driver.server.listen_ip then
log.info_with({ hub_logs = true },
“hub IPv4 address has changed, restarting listen server and resubscribing”)
driver.server:shutdown()
driver.server = SubscriptionServer:new_server()
resubscribe_all(driver)
end
end
local function discovery_handler(driver, _, should_continue)
local known_devices = {}
local found_devices = {}
local device_list = driver:get_devices()
for _, device in ipairs(device_list) do
local serial_num = device:get_field(“serial_num”)
–Note MAC is not used due to MAC mismatch for migrated devices
if serial_num ~= nil then known_devices[serial_num] = true end
end
log.info_with({ hub_logs = true }, “Starting discovery scanning”)
while should_continue() do
discovery.find(
nil,
function(device)
local id = device.id
local ip = device.ip
local serial_num = device.serial_num
if not known_devices[serial_num] and not found_devices[serial_num] then
found_devices[serial_num] = true
local name = device.name or "Unnamed Wemo"
local profile_name = device.model
if string.find(name, "Motion") then
profile_name = "Motion"
end
local profile = profiles[profile_name]
if profile then
-- add device
log.info_with({ hub_logs = true }, string.format("creating %s device [%s] at %s", name, id, ip))
local create_device_msg = {
type = "LAN",
device_network_id = id,
label = name,
profile = profile,
manufacturer = "Belkin",
model = device.model,
vendor_provided_label = device.name,
}
log.trace("create device with:", utils.stringify_table(create_device_msg))
assert(
driver:try_create_device(create_device_msg),
"failed to create device record"
)
else
log.warn("discovered device is an unknown model:", tostring(device.model))
end
else
log.debug("device already known by driver")
end
end
)
end
log.info_with({ hub_logs = true }, “Discovery scanning ended”)
end
– Build driver context table
local wemo = Driver(“wemo”, {
discovery = discovery_handler,
lifecycle_handlers = {
init = device_init,
removed = device_removed,
added = device_added,
},
lan_info_changed_handler = lan_info_changed_handler,
capability_handlers = {
[capabilities.switch.ID] = {
[capabilities.switch.commands.on.NAME] = command_handlers.handle_switch_on,
[capabilities.switch.commands.off.NAME] = command_handlers.handle_switch_off,
},
[capabilities.switchLevel.ID] = {
[capabilities.switchLevel.commands.setLevel.NAME] = command_handlers.handle_set_level,
},
[capabilities.refresh.ID] = {
[capabilities.refresh.commands.refresh.NAME] = command_handlers.handle_refresh,
}
}
})
log.info(“Spinning up subscription server and running driver”)
– TODO handle case where the subscription server is not started
wemo.server = SubscriptionServer.new_server()
wemo:run()
The error in the driver is that all of the devices are being detected as “wemo.mini-smart-plug.v1” instead of their respective profiles because the profiles table is incorrect. The table is currently mapping all of the devices to the profile “wemo.mini-smart-plug.v1”. The correct mapping should be:
java
Copy code
local profiles = {
[“Insight”] = “wemo.insight-switch.v2”,
[“Socket”] = “wemo.light-switch.v2”,
[“Dimmer”] = “wemo.dimmer.v2”,
[“Motion”] = “wemo.motion-sensor.v1”,
[“Lightswitch”] = “wemo.light-switch.v1”,
}