[ 
https://issues.apache.org/jira/browse/DISPATCH-1254?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Alan Conway updated DISPATCH-1254:
----------------------------------
    Description: 
Calling qdstat -nv repeatedly to check the status of a router network sometimes 
raises a "nonetype not iterable error.

Reproducer: 

make install this version of quiver (extented to allow separate send/receive 
URLS). If you have maven installed you should edit the makefile to disable the 
Java arrow as the build is very slow and fragile:

    [https://github.com/alanconway/quiver]

run the attached script like this:

    qdr-chain.sh quiver --arrow c  --count 1000 --send-url //:10001/x 
//:10001/x     

The script generates config files, starts four routers, waits for qdstat -nv to 
show the full topology and then runs quiver as directed. Edit the script to 
change logging or other config settings. Log and config files are created in 
the current directory.

WARNING the script will kill any running qdrouterd.

While waiting for the router network to stabilize I see output like the 
following. The initial connection error is expected as the router has not yet 
started, but the TypeError in the middle is unexpected.

 

{{ConnectionException: Connection amqp://localhost:10001/$management 
disconnected: Condition('proton:io', 'recv: errno: 111') }}
{{waiting... }}
{{Routers in the Network }}
{{ router-id next-hop link ver cost neighbors valid-origins }}
{{ ================================================================ }}
{{ 1 (self) - 1 [] [] }}
{{waiting... }}
{{Routers in the Network }}
{{ router-id next-hop link ver cost neighbors valid-origins }}
{{ ================================================================ }}
{{ 1 (self) - 1 [] [] }}
{{waiting... }}
{{Routers in the Network }}
{{ router-id next-hop link ver cost neighbors valid-origins }}
{{ ================================================================ }}
{{ 1 (self) - 1 [] [] }}
{{waiting... }}
{{TypeError: 'NoneType' object is not iterable }}
{{waiting... }}
{{Routers in the Network }}
{{Last Topology Change: Wednesday Jan 23 15:40:34 2019 GMT }}
{{ router-id next-hop link ver cost neighbors valid-origins }}
{{ ================================================================= }}
{{ 1 (self) - 1 ['2'] [] }}
{{ 2 - 0 1 1 ['1', '3'] [] }}
{{ 3 2 - 2 [] [] }}
{{waiting... }}
{{Routers in the Network }}
{{Last Topology Change: Wednesday Jan 23 15:40:39 2019 GMT }}
{{ router-id next-hop link ver cost neighbors valid-origins }}
{{ ================================================================= }}
{{ 1 (self) - 1 ['2'] [] }}
{{ 2 - 0 1 1 ['1', '3'] [] }}
{{ 3 2 - 1 2 ['2', '4'] [] }}
{{ 4 2 - 1 3 ['3'] [] }}

  was:
Calling qdstat -nv repeatedly to check the status of a router network sometimes 
raises a "nonetype not iterable error.

Reproducer: 

make install this version of quiver (extented to allow separate send/receive 
URLS). If you have maven installed you should edit the makefile to disable the 
Java arrow as the build is very slow and fragile:

    [https://github.com/alanconway/quiver]

run the attached script like this:

    qdr-chain.sh quiver --timeout 60 --arrow c  --count 1000 --send-url 
//:10001/x //:10004/x     

The script generates config files, starts four routers, waits for qdstat -nv to 
show the full topology and then runs quiver as directed. Edit the script to 
change logging or other config settings. Log and config files are created in 
the current directory.

WARNING the script will kill any running qdrouterd.

I see the sender fail with this error:

    impls/quiver-arrow-qpid-proton-c.c:307: bad delivery: 
pn_delivery<0x8aad20>\{sending, tag=b"\x01\x00\x00\x00\x00\x00\x00\x00", 
local=unknown, remote=rejected} 

NOTE: the script configures the address "testme" on all 4 routers, if you run 
the test like this it passes:

    qdr-chain.sh quiver --timeout 60 --arrow c  --count 1000 --send-url 
//:10001/testme //:10004/testme

 


> qdstat sometimes raises "TypeError: 'NoneType' object is not iterable"
> ----------------------------------------------------------------------
>
>                 Key: DISPATCH-1254
>                 URL: https://issues.apache.org/jira/browse/DISPATCH-1254
>             Project: Qpid Dispatch
>          Issue Type: Bug
>          Components: Routing Engine
>    Affects Versions: 1.2.0
>            Reporter: Alan Conway
>            Assignee: Ganesh Murthy
>            Priority: Major
>         Attachments: qdr-chain.sh
>
>
> Calling qdstat -nv repeatedly to check the status of a router network 
> sometimes raises a "nonetype not iterable error.
> Reproducer: 
> make install this version of quiver (extented to allow separate send/receive 
> URLS). If you have maven installed you should edit the makefile to disable 
> the Java arrow as the build is very slow and fragile:
>     [https://github.com/alanconway/quiver]
> run the attached script like this:
>     qdr-chain.sh quiver --arrow c  --count 1000 --send-url //:10001/x 
> //:10001/x     
> The script generates config files, starts four routers, waits for qdstat -nv 
> to show the full topology and then runs quiver as directed. Edit the script 
> to change logging or other config settings. Log and config files are created 
> in the current directory.
> WARNING the script will kill any running qdrouterd.
> While waiting for the router network to stabilize I see output like the 
> following. The initial connection error is expected as the router has not yet 
> started, but the TypeError in the middle is unexpected.
>  
> {{ConnectionException: Connection amqp://localhost:10001/$management 
> disconnected: Condition('proton:io', 'recv: errno: 111') }}
> {{waiting... }}
> {{Routers in the Network }}
> {{ router-id next-hop link ver cost neighbors valid-origins }}
> {{ ================================================================ }}
> {{ 1 (self) - 1 [] [] }}
> {{waiting... }}
> {{Routers in the Network }}
> {{ router-id next-hop link ver cost neighbors valid-origins }}
> {{ ================================================================ }}
> {{ 1 (self) - 1 [] [] }}
> {{waiting... }}
> {{Routers in the Network }}
> {{ router-id next-hop link ver cost neighbors valid-origins }}
> {{ ================================================================ }}
> {{ 1 (self) - 1 [] [] }}
> {{waiting... }}
> {{TypeError: 'NoneType' object is not iterable }}
> {{waiting... }}
> {{Routers in the Network }}
> {{Last Topology Change: Wednesday Jan 23 15:40:34 2019 GMT }}
> {{ router-id next-hop link ver cost neighbors valid-origins }}
> {{ ================================================================= }}
> {{ 1 (self) - 1 ['2'] [] }}
> {{ 2 - 0 1 1 ['1', '3'] [] }}
> {{ 3 2 - 2 [] [] }}
> {{waiting... }}
> {{Routers in the Network }}
> {{Last Topology Change: Wednesday Jan 23 15:40:39 2019 GMT }}
> {{ router-id next-hop link ver cost neighbors valid-origins }}
> {{ ================================================================= }}
> {{ 1 (self) - 1 ['2'] [] }}
> {{ 2 - 0 1 1 ['1', '3'] [] }}
> {{ 3 2 - 1 2 ['2', '4'] [] }}
> {{ 4 2 - 1 3 ['3'] [] }}



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