I would like to find a way to set the miss_send_len on floodlight to 0xFFFD
i.e. translate the following POX line
self.connection.send(of.ofp_set_config(miss_send_len = 0xFFFD))
into floodlight.
As far as I know, this is done during the handshake between the controller and the switches through an OFSetConfig.
A Modification to
https://github.com/floodlight/floodlight/blob/master/src/main/java/net/floodlightcontroller/core/internal/OFSwitchHandshakeHandler.java#L1746 was enough to set the miss_send_len to 0xFFFD
Related
Is there a way to make the logged user (on superset) to make the queries on impala?
I tried to enable the "Impersonate the logged on user" option on Databases but with no success because all the queries run on impala with superset user.
I'm trying to achieve the same! This will not completely answer this question since it does not still work but I want to share my research in order to maybe help another soul that is trying to use this instrument outside very basic use cases.
I went deep in the code and I found out that impersonation is not implemented for Impala. So you cannot achieve this from the UI. I found out this PR https://github.com/apache/superset/pull/4699 that for whatever reason was never merged into the codebase and tried to copy&paste code in my Superset version (1.1.0) but it didn't work. Adding some logs I can see that the configuration with the impersonation is updated, but then the actual Impala query is with the user I used to start the process.
As you can imagine, I am a complete noob at this. However I found out that the impersonation thing happens when you create a cursor and there is a constructor parameter in which you can pass the impersonation configuration.
I managed to correctly (at least to my understanding) implement impersonation for the SQL lab part.
In the sql_lab.py class you have to add in the execute_sql_statements method the following lines
with closing(engine.raw_connection()) as conn:
# closing the connection closes the cursor as well
cursor = conn.cursor(**database.cursor_kwargs)
where cursor_kwargs is defined in db_engine_specs/impala.py as the following
#classmethod
def get_configuration_for_impersonation(cls, uri, impersonate_user, username):
logger.info(
'Passing Impala execution_options.cursor_configuration for impersonation')
return {'execution_options': {
'cursor_configuration': {'impala.doas.user': username}}}
#classmethod
def get_cursor_configuration_for_impersonation(cls, uri, impersonate_user,
username):
logger.debug('Passing Impala cursor configuration for impersonation')
return {'configuration': {'impala.doas.user': username}}
Finally, in models/core.py you have to add the following bit in the get_sqla_engine def
params = extra.get("engine_params", {}) # that was already there just for you to find out the line
self.cursor_kwargs = self.db_engine_spec.get_cursor_configuration_for_impersonation(
str(url), self.impersonate_user, effective_username) # this is the line I added
...
params.update(self.get_encrypted_extra()) # already there
#new stuff
configuration = {}
configuration.update(
self.db_engine_spec.get_configuration_for_impersonation(
str(url),
self.impersonate_user,
effective_username))
if configuration:
params.update(configuration)
As you can see I just shamelessy pasted the code from the PR. However this kind of works only for the SQL lab as I already said. For the dashboards there is an entirely different way of querying Impala that I did not still find out.
This means that queries for the dashboards are handled in a different way and there isn't something like this
with closing(engine.raw_connection()) as conn:
# closing the connection closes the cursor as well
cursor = conn.cursor(**database.cursor_kwargs)
My gut (and debugging) feeling is that you need to first understand the sqlalchemy part and extend a new ImpalaEngine class that uses a custom cursor with the impersonation conf. Or something like that, however it is not simple (if we want to call this simple) as the sql_lab part. So, the trick is to find out where the query is executed and create a cursor with the impersonation configuration. Easy, isnt'it ?
I hope that this could shed some light to you and the others that have this issue. Let me know if you did find out another way to solve this issue, or if this comment was useful.
Update: something really useful
A colleague of mine succesfully implemented impersonation with impala without touching any superset related, but instead working directly with the impyla lib. A PR was open with the code to change. You can apply the patch directly in the impyla src used by superset. You have to edit both dbapi.py and hiveserver2.py.
As a reminder: we are still testing this and we do not know if it works with different accounts using the same superset instance.
We've seen a resurrection of this issue in a recent update of Elasticsearch (https://github.com/elastic/elasticsearch-net/issues/1937).
We set the SourceSerializer when creating the Client connection but that doesn't seem to help.
Debugging in, I see that RequestResponseSerializer defaults to Nest.InternalSerializer. This JSON serializer has the DateParseHandling field set to DateTime when we want DateTimeOffset. I suspect that this may be the cause of my problem.
Is there a way to set RequestResponseSerializer to verify my theory?
ADDITION: I was able to verify my theory above by altering the NEST code directly. I edited the InternalSerializer::CreateSettings() method to include DateParseHandling = DateParseHandling.DateTimeOffset and that solved the issue.
Now how to set/modify this value for RequestResponseSerializer without modifying NEST code directly...
Turns out my issue was the same as https://github.com/elastic/elasticsearch-net/issues/3164 and seemed to be fixed in v6.2.0 (https://github.com/elastic/elasticsearch-net/pull/3278).
I was running v6.1.0
Upgraded my version to v6.3.1 and all looks well.
I'm looking for a variable that can tell me which number 'won' the call on a multi-target Dial command.
Example:
Dial(SIP/1000&SIP/1001&SIP/1002,30)
Set(the_unlucky_winner=${...})
I'm not getting anything from the ${DIALEDPEERx} variables. Sounds like these vars are broken but I don't know if this is what I should be using.
Ancient version 1.2.14 deployed at this site. All clients are SIP
Thanks anyone
Only realistic way do that - cal via Local channle like freepbx do(check freepbx.org source) or use Macro on answer(i am afraid not work in 1.2)
Parse the contents of the CDR record for the file. One of the fields is dstchannel which will hold a value like SIP/1002-9786b0b0.
Also keep in mind that the call variable stack is wiped on hangup, unless you have an "h" (hangup) extension defined for the context. So, you can most easily handle your post-call processing there.
Further Reading:
http://www.asteriskdocs.org/en/3rd_Edition/asterisk-book-html-chunk/asterisk-SysAdmin-SECT-1.html
Please Note:
if this answer turns out to solve your problem, please "accept" it for the benefit of others trying to solve the same problem later
Hi all I have a solution to this problem. It is working fine for both normal dial and multi target dial.
In dialstring add a macro, here I am adding "followme" macro.
M(followme)
$agi->exec("dial", "SIP/6001#sip.example.com&SIP/6002#sip.example.com,rtTgM(followme)");
Then after call is answered it ll go to context
[macro-followme]
In this context you write one script to get the connected calls information by
$dstchannel=$agi->get_variable("DIALEDPEERNUMBER");
The way I managed to do it is as follows
Dial(SIP/1000&SIP/1001&SIP/1002,30,M(whoanswered))
[macro-whoanswered]
exten => s,1,NoOp(${CHANNEL})
You will see that the actual extension that answered is containes in ${CHANNEL}
If 1001 answered the channel will be something like SIP/1001-00017cf1
Just use the CUT command to cut it by / and -
Hi has anione worked with MQX ?
I do not know how to set BSP_ENET_DEVICE_COUNT in order to test the enet demo ...
you should look in the user_config.h and the board specific header file (e.g. TWRK60512.h for the k60 tower) for such settings. These can be found in the bsp library source.
Hope that helps!
Normally this is set on {MQX_ROOT_DIR}\mqx\source\bsp\"your_bsp_name"\"your_bsp_name".h
but you can set it on user_config.h too.
In snmp4j version 2.0.2, I'm using TableUtils.getTable to get the snmp info,
and I'm using usm.adduser to add all the profiles,
but I don't see a way to add the context name of the v3profile.
I know you can set the ScopePDU.setContextName, but TableUtils.getTable don't use PDU
object,
unless I'm missing something, please help...
Thanks,
Julie
I got the response back from Frank in the gmane.network.snmp4j.general newsgroup, basically just need to create a subclass of PDUFactory in order to specify the context name there.