[ndnSIM] Content Store data manipulation

[i.liyanage at surrey.ac.uk]

Hi Alex,

Is it possible to get the node number, within the model/fw/ndn-forwarding-strategy.cc code.

many thanks,
Isuru.
________________________________
From: Alexander Afanasyev <cawka1 at gmail.com> on behalf of Alex Afanasyev <alexander.afanasyev at ucla.edu>
Sent: 17 November 2013 20:19
To: Liyanage IU Mr (PG/R - Electronic Eng)
Cc: ndnsim
Subject: Re: [ndnSIM] Content Store data manipulation

Hi Isuru,

The ContentStore::Add method is called (and which results in calling of the selected ContentStoreImpl<Policy>::Add method) from ndn::ForwardingStrategy (model/fw/ndn-forwarding-strategy.cc<http://ndn-forwarding-strategy.cc> line 239 and 255).

Further, ContentStoreImpl<Policy>::Add calls insert method on the underlying policy-based controller, which results in calling policy-specific 'insert' method.  For example, if selected policy is Lru, then `insert' method defined in utils/trie/lru-policy.h line 77-87.

---
Alex

On Nov 17, 2013, at 10:57 AM, <i.liyanage at surrey.ac.uk<mailto:i.liyanage at surrey.ac.uk>> <i.liyanage at surrey.ac.uk<mailto:i.liyanage at surrey.ac.uk>> wrote:

Hi Alex,

I looked at the both implementations and still not sure how to handle the entries in CS.

for an example when data is received by a node what method inserts the data to CS??
Assuming the method ContentStoreImpl<Policy>::Add (Ptr<const Data> data) is executed,
from where does this method is called

many thanks,
Isuru
________________________________
From: Alexander Afanasyev <cawka1 at gmail.com<mailto:cawka1 at gmail.com>> on behalf of Alex Afanasyev <alexander.afanasyev at ucla.edu<mailto:alexander.afanasyev at ucla.edu>>
Sent: 14 November 2013 22:21
To: Liyanage IU Mr (PG/R - Electronic Eng)
Cc: ndnsim at lists.cs.ucla.edu<mailto:ndnsim at lists.cs.ucla.edu>
Subject: Re: [ndnSIM] Content Store data manipulation

Hi Isuru,

utils/ folder contain general-use policies and model/cs/ folder contain policy that can be used only with ContentStore.  I would recommend to start with general-use and just peek at ContentStore-specific policy to see how to access information from cached entry.

---
Alex

On Nov 14, 2013, at 9:36 AM, <i.liyanage at surrey.ac.uk<mailto:i.liyanage at surrey.ac.uk>> <i.liyanage at surrey.ac.uk<mailto:i.liyanage at surrey.ac.uk>> wrote:

Hi Alex,

To write a policy which file should I refer to. I noticed the ContentStore implementation in */model/ cs folder and policy file in */utils/ trie folder.
Could you suggest me good way to start to create a new policy.

Many thanks,
Isuru

________________________________
From: Alexander Afanasyev <cawka1 at gmail.com<mailto:cawka1 at gmail.com>> on behalf of Alex Afanasyev <alexander.afanasyev at ucla.edu<mailto:alexander.afanasyev at ucla.edu>>
Sent: 14 November 2013 16:07
To: Liyanage IU Mr (PG/R - Electronic Eng)
Cc: ndnsim at lists.cs.ucla.edu<mailto:ndnsim at lists.cs.ucla.edu>
Subject: Re: [ndnSIM] Content Store data manipulation

Hi Isuru,

Since ContentStore is property of the forwarding daemon, there is no application interface to directly manage (add/remove) entries.  You can have full control over the cache content if you write a so-called policy, but this will not be application.

---
Alex

On Nov 14, 2013, at 3:25 AM, i.liyanage at surrey.ac.uk<mailto:i.liyanage at surrey.ac.uk> wrote:

Hi,

Is it possible to add/remove Content Store entries using a application on a node.
If it is what methods should I use.

many thanks,
Isuru
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