| Davide Pesavento | 133067f | 2020-04-02 22:08:27 -0400 | [diff] [blame] | 1 | # PSync: Partial and Full Synchronization Library for NDN |
| Ashlesh Gawande | 0b2897e | 2018-06-20 14:40:47 -0500 | [diff] [blame] | 2 | |
| Davide Pesavento | 133067f | 2020-04-02 22:08:27 -0400 | [diff] [blame] | 3 |  |
| 4 | [](https://travis-ci.org/named-data/PSync) |
| 5 |  |
| Ashlesh Gawande | 0b2897e | 2018-06-20 14:40:47 -0500 | [diff] [blame] | 6 | |
| Davide Pesavento | 133067f | 2020-04-02 22:08:27 -0400 | [diff] [blame] | 7 | The PSync library implements the |
| 8 | [PSync protocol](https://named-data.net/wp-content/uploads/2017/05/scalable_name-based_data_synchronization.pdf). |
| 9 | It uses Invertible Bloom Lookup Table (IBLT), also known as Invertible Bloom Filter (IBF), |
| 10 | to represent the state of a producer in partial sync mode and the state of a node in full |
| 11 | sync mode. An IBF is a compact data structure where difference of two IBFs can be computed |
| 12 | efficiently. In partial sync, PSync uses a Bloom Filter to represent the subscription list |
| 13 | of the consumer. |
| Ashlesh Gawande | 0b2897e | 2018-06-20 14:40:47 -0500 | [diff] [blame] | 14 | |
| Davide Pesavento | 133067f | 2020-04-02 22:08:27 -0400 | [diff] [blame] | 15 | PSync uses the [ndn-cxx](https://github.com/named-data/ndn-cxx) library. |
| Ashlesh Gawande | 0b2897e | 2018-06-20 14:40:47 -0500 | [diff] [blame] | 16 | |
| Davide Pesavento | 133067f | 2020-04-02 22:08:27 -0400 | [diff] [blame] | 17 | ## Installation |
| Ashlesh Gawande | 0b2897e | 2018-06-20 14:40:47 -0500 | [diff] [blame] | 18 | |
| 19 | ### Prerequisites |
| 20 | |
| Davide Pesavento | 133067f | 2020-04-02 22:08:27 -0400 | [diff] [blame] | 21 | * [ndn-cxx and its dependencies](https://named-data.net/doc/ndn-cxx/current/INSTALL.html) |
| Ashlesh Gawande | 0b2897e | 2018-06-20 14:40:47 -0500 | [diff] [blame] | 22 | |
| 23 | ### Build |
| 24 | |
| Davide Pesavento | 133067f | 2020-04-02 22:08:27 -0400 | [diff] [blame] | 25 | To build PSync from source: |
| Ashlesh Gawande | 0b2897e | 2018-06-20 14:40:47 -0500 | [diff] [blame] | 26 | |
| 27 | ./waf configure |
| 28 | ./waf |
| 29 | sudo ./waf install |
| 30 | |
| 31 | To build on memory constrained platform, please use `./waf -j1` instead of `./waf`. The |
| 32 | command will disable parallel compilation. |
| 33 | |
| Davide Pesavento | 133067f | 2020-04-02 22:08:27 -0400 | [diff] [blame] | 34 | If configured with tests (`./waf configure --with-tests`), the above commands will also |
| 35 | generate unit tests that can be run with `./build/unit-tests`. |
| 36 | |
| 37 | ## Reporting bugs |
| 38 | |
| 39 | Please submit any bug reports or feature requests to the |
| 40 | [PSync issue tracker](https://redmine.named-data.net/projects/psync/issues). |
| 41 | |
| 42 | ## Contributing |
| 43 | |
| 44 | We greatly appreciate contributions to the PSync code base, provided that they are |
| 45 | licensed under the LGPL 3.0+ or a compatible license (see below). |
| 46 | If you are new to the NDN software community, please read the |
| 47 | [Contributor's Guide](https://github.com/named-data/.github/blob/master/CONTRIBUTING.md) |
| 48 | to get started. |
| 49 | |
| 50 | ## License |
| 51 | |
| 52 | PSync is an open source project licensed under the LGPL version 3. |
| 53 | See [`COPYING.md`](COPYING.md) for more information. |