commit | 6f59a39f4fd52a05c470545913c2a81fdd80f6d1 | [log] [tgz] |
---|---|---|
author | Nick Vatamaniuc <vatamane@apache.org> | Fri Jan 24 23:03:28 2020 -0500 |
committer | Nick Vatamaniuc <nickva@users.noreply.github.com> | Sat Jan 25 15:11:55 2020 -0500 |
tree | 7352b6c060c1d9575b85cb666e6b62544e3d4f6f | |
parent | c89b2d6e2294efd19696d391c43861ecc1fae323 [diff] |
Add transaction option to disallow writes Add `disallow_writes | allow_writes` transaction options. If the transaction hasn't done any writes yet, it is possible to set the `disallow_writes` option, and then every write attempt will throw a `writes_not_allowed` error.
This project is a NIF wrapper for the FoundationDB C API. Documentation on the main API can be found here.
This project also provides a conforming implementation of the Tuple and Directory layers.
Assuming you have installed the FoundationDB C API library, building erlfdb is as simple as:
$ make
Alternatively, adding erlfdb as a rebar dependency should Just Work ®.
Documentation for installing FoundationDB can be found here for macOS or here for Linux.
A simple example showing how to open a database and read and write keys:
Eshell V9.3.3.6 (abort with ^G) 1> Db = erlfdb:open(<<"/usr/local/etc/foundationdb/fdb.cluster">>). {erlfdb_database,#Ref<0.2859661758.3941466120.85406>} 2> ok = erlfdb:set(Db, <<"foo">>, <<"bar">>). ok 3> erlfdb:get(Db, <<"foo">>). <<"bar">> 4> erlfdb:get(Db, <<"bar">>). not_found
FoundationDB has a custom binding tester that can be used to test whether changes have broken compatibility. See the BINDING_TESTER documentation for instructions on building and running that system.