Hackathon 13th July 2018

Agenda

• Unit tests in CCN-lite
• Data structures

Participants

• Cenk Gündogan (HAW)
• Michael Frey (MSA Safety)

Topics

Unit tests in CCN-lite

The goal is to have CMocka ready for CCN-lite. Tests (and mocks) should be in a directory test/ in the project root and integrated in the CMake-based build process. I've started a branch (latest changes need to be committed) over here.

Data structures

We want to start to refactor the interface for accessing various data structures across CCN-lite. One good starting point might be the content store. There is already a ticket which discusses some ideas, such as callbacks and a unified interface for accessing the content store (and hence allow to provide different implementations).

Ideas

NDN-CPP

I've thought it might be a good idea to look how NDN does it. The Data API is a good starting point.

API

/** 
  * @brief Returns the size of the content store
  */
uint32_t size();

/** 
  * @brief Adds content to the content store
  *
  * @return 0, if the operation was successful
  * @return -1, if the content could not be added to the content store (no space?)
  * @return -2, if the content is already in the content store
  */
int8_t add(struct ccnl_prefix_s prefix, struct ccnl_content_s content);

/** 
  * @brief Returns the content of a given @p prefix
  *
  * @return Upon success the content object associated with the given 
  *   prefix, NULL otherwise
  */
struct ccnl_content_s* get(struct ccnl_prefix_s prefix);

/** 
  * @brief Removes all entries from the content store
  */
void clear();

/** 
  * @brief Checks if content under the given @p prefix is already stored
  *  in the content store.
  */
bool has_prefix(struct ccnl_prefix_s prefix);