[ndnSIM] [EXT] Issue with writing custom nametree

Swetha B swetab26 at gmail.com
Fri Oct 9 01:42:14 PDT 2020 

Hi Junxiao,
As per your suggestion I created SSH public keys and could proceed
further.  While cloning the NFD repository, i got following message

swetha at swetha-Ubuntu:~$ git clone "ssh://
swetha_rnsit at gerrit.named-data.net:29418/NFD" && scp -p -P 29418
swetha_rnsit at gerrit.named-data.net:hooks/commit-msg "NFD/.git/hooks/"
Cloning into 'NFD'...
The authenticity of host '[gerrit.named-data.net]:29418
([104.154.51.235]:29418)' can't be established.
ECDSA key fingerprint is SHA256:Wcd2ZLM6D9+lbHPwQILvrbcPsH9wNoqc3WIrTgS0Sh4.
Are you sure you want to continue connecting (yes/no)? y
Please type 'yes' or 'no': yes
Warning: Permanently added
'[gerrit.named-data.net]:29418,[104.154.51.235]:29418'
(ECDSA) to the list of known hosts.
swetha_rnsit at gerrit.named-data.net: Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

Do i have to make any other settings before cloning the NFD repository.
Thank you

Regards
Swetha



On Thu, Oct 8, 2020 at 3:59 PM Junxiao Shi <shijunxiao at email.arizona.edu>
wrote:

> Hi Swetha
>
> You missed step 6 or step 7.
>
> Yours, Junxiao
>
>
> On Thu, Oct 8, 2020, 05:05 Swetha B <swetab26 at gmail.com> wrote:
>
>> *External Email*
>> Hi junxiao Shi,
>> I have problem with cloning NFD repository.
>> I followed your previous email
>>
>> Dear folks
>>
>> I got question on how to clone the NFD repository for development purpose.
>> Here's the updated procedure: (Thanks Teng Liang for reporting a problem in
>> the procedure sent on Mar 28)
>>
>>    1. in a web browser, navigate to http://gerrit.named-data.net
>>    2. click "Sign In" link on top-right corner, click "Google OAuth2"
>>    3. authenticate with your Google Account, and then you will be
>>    redirected back to Gerrit system
>>    4. click your name on top-right corner, and click "Settings" in the
>>    pop-up box
>>    5. look for a "Username" textbox; if there's no such textbox, but a
>>    username is displayed, goto step 7
>>    6. in the "Username" textbox, type a username (syntax: a letter,
>>    followed by letters or numbers), and click "Select" button, confirm
>>    7. click "SSH Public Keys" menu item on left navigation bar
>>    8. look for multi-line textbox below "Add SSH Public Key"; if there's no
>>    such textbox, but a table is displayed, goto step 10
>>    9. paste your SSH public key, and click "Add" button
>>    10. click "Projects - List" menu item on top navigation bar
>>    11. type "NFD" in "Filter" textbox
>>    12. click "NFD" table row
>>    13. under "Project NFD" title, click "clone with commit-msg hook" and
>>    "SSH" buttons
>>    14. find the textbox below "clone with commit-msg hook" (it should start
>>    with "git clone ssh:/")
>>    15. the contents in this textbox is the complete command line needed to
>>    clone the NFD repository
>>
>>
>> But i didnt find "clone with commit-msg hook" and "SSH" buttons. In place
>> of that i found git clone "https://gerrit.named-data.net/NFD"..
>> Can u guide me how to proceed further.
>>
>> Regards
>> Swetha
>>
>> On Wed, Oct 7, 2020 at 4:41 PM Swetha B <swetab26 at gmail.com> wrote:
>>
>>> Thanks a lot for your valuable inputs.
>>> Swetha B
>>>
>>> On Mon, Oct 5, 2020 at 9:42 AM Junxiao Shi <shijunxiao at email.arizona.edu>
>>> wrote:
>>>
>>>> Hi Swetha
>>>>
>>>> This means your changes are breaking the NameTree API needed by FIB.
>>>>
>>>> 1. Separately clone the NFD repository.
>>>> 2. Checkout the NFD version used in your version of ndnSIM.
>>>> 3. Apply your modifications there.
>>>> 4. Ensure all unit tests are passing. If not, find out what's wrong in
>>>> your changes.
>>>> 5. Now reapply the changes to ndnSIM, and the FIB will likely work.
>>>>
>>>> Yours, Junxiao
>>>>
>>>> On Mon, Oct 5, 2020 at 00:01 Swetha B via ndnSIM <
>>>> ndnsim at lists.cs.ucla.edu> wrote:
>>>>
>>>>> *External Email*
>>>>> Hi all,
>>>>> I am implementing NDN tables indexing using closed hashing with linear
>>>>> probing in ndnSIM2.7.
>>>>> To achieve that I modified name-tree-hashtable.cpp and
>>>>> name-tree-iterator.cpp.
>>>>> After modifications i am able to successfully run producer consumer
>>>>> applications.
>>>>> In my custom scenario i am accessing FIB table of a node to insert a
>>>>> prefix and later execute consumer producer applications using that prefix.
>>>>>
>>>>> auto& fib1 =
>>>>> node1->GetObject<ndn::L3Protocol>()->getForwarder()->getFib();
>>>>>   auto e = fib1.insert(prefix).first;
>>>>>   ndn::FibHelper::AddRoute(node1,prefix,node4,1);
>>>>>
>>>>> When i execute this scenario i see that visualizer is'nt working and
>>>>> also the regular setup FIB tables on nodes is'nt taking place. I have
>>>>> shared a snapshot of execution.
>>>>>
>>>>> swetha at swetha-Ubuntu:~/Desktop/ndnSIM/ndnSIM-sample-topologies$
>>>>> NS_LOG="ndn-cxx.nfd.NameTreeHashtable:ndn.FibHelper:ndn.L3Protocol" ./waf
>>>>> --run=ndn-simple --vis
>>>>> Waf: Entering directory
>>>>> `/home/swetha/Desktop/ndnSIM/ndnSIM-sample-topologies/build'
>>>>> [23/34] cxx: scenarios/ndn-simple.cc ->
>>>>> build/scenarios/ndn-simple.cc.12.o
>>>>> [34/34] cxxprogram: build/scenarios/ndn-simple.cc.12.o ->
>>>>> build/ndn-simple
>>>>> Waf: Leaving directory
>>>>> `/home/swetha/Desktop/ndnSIM/ndnSIM-sample-topologies/build'
>>>>> 'build' finished successfully (6.937s)
>>>>> +0.000000000s 0 ndn.L3Protocol:L3Protocol(0x555bd319c4e0)
>>>>> +0.000000000s 0 ndn-cxx.nfd.NameTreeHashtable:computeThresholds():
>>>>> [LOGIC] thresholds expand=512 shrink=102
>>>>> +0.000000000s 0 ndn-cxx.nfd.NameTreeHashtable:findOrInsert(): [LOGIC]
>>>>> insert / hash=0 bucket=0
>>>>> +0.000000000s 0 ndn-cxx.nfd.NameTreeHashtable:findOrInsert(): [LOGIC]
>>>>> insert /ndn hash=6181921638449679482 bucket=122
>>>>> +0.000000000s 0 ndn-cxx.nfd.NameTreeHashtable:findOrInsert(): [LOGIC]
>>>>> insert /ndn/multicast hash=18240561258910134669 bucket=397
>>>>> +0.000000000s 0 ndn-cxx.nfd.NameTreeHashtable:findOrInsert(): [LOGIC]
>>>>> insert /localhost hash=10937169108514740553 bucket=329
>>>>> +0.000000000s 0 ndn-cxx.nfd.NameTreeHashtable:findOrInsert(): [LOGIC]
>>>>> insert /localhost/nfd hash=3626199823732152002 bucket=706
>>>>>
>>>>> swetha at swetha-Ubuntu:~/Desktop/ndnSIM/ndnSIM-sample-topologies$
>>>>>
>>>>>
>>>>>
>>>>>   I m grateful for any thoughts and advice regarding where i am going
>>>>> wrong in this.
>>>>> Thanks.
>>>>>
>>>>> Swetha B.
>>>>> Research Scholar
>>>>> RNSIT
>>>>> Bengaluru
>>>>> India
>>>>>
>>>>>
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