• Stars
    star
    205
  • Rank 191,264 (Top 4 %)
  • Language
    Erlang
  • License
    Apache License 2.0
  • Created over 11 years ago
  • Updated almost 2 years ago

Reviews

There are no reviews yet. Be the first to send feedback to the community and the maintainers!

Repository Details

never lose your childlike sense of wonder baby cuttlefish, promise me?

Cuttlefish

Erlang CI Actions Status

Cuttlefish is a library for Erlang applications that wish to walk the fine line between Erlang app.configs and a sysctl-like syntax. The name is a pun on the pronunciation of 'sysctl' and jokes are better explained.

This repository retains full history of the original repository, basho/cuttlefish/, but intentionally cut ties with that repo to avoid confusion as to where is the most up-to-date, maintained version is.

This is the repository used to produce Hex.pm releases of the project.

Supported Erlang/OTP Versions

  • Cuttlefish 2.7.0 and later versions support Erlang 22 through 24
  • Cuttlefish releases up to and including 2.6.0 support Erlang/OTP 17 through 23

Riak Disclaimer

While this readme and test suite is Riak-heavy, the fact is that this library can be used with any Erlang application that wants a more universally accessible configuration syntax. Still, I built this for Riak, and it's nice to have a concrete example to work with.

The Vision

Currently, Riak's app.config is the definitive place for configuring Riak. It's not odd for Erlang applications to be configured this way, but it is a struggle for non-Erlang programmers and automated deployment tools to manipulate these files. On the other hand, the app.config is a useful construct for Erlang programmers, and it is pretty coupled to OTP applications.

Cuttlefish's goal is to put a layer of abstraction on top of the app.config that is easier to work with outside of the Erlang world. It will allow Erlang programmers to write a schema for their application's configuration file, which is independent of the applications included in the project. The schema is one of the more important parts of Cuttlefish, so we'll go into more detail on it below, but it is written in Erlang and defines how the non-Erlang configuration file works.

From this schema, you can generate a default .conf file for your application. This will be the file that is packaged with your application as the default configuration.

The schema is also used to generate an app.config that will be used to start your application. Using the schema alone will generate all the proper defaults. Your users can make changes to the .conf file and those changes will overwrite the schema's defaults.

You an also have an advanced.config which looks like the old app.config for anything that no schema mapping is created for.

What does this look like for an application like Riak?

Well, the authors of Riak maintain a schema for Riak's config. It defines all sorts of things we'll get into later. When we build Riak, Cuttlefish generates a riak.conf file that contains the default shipping configuration of Riak. When a script to start Riak is run, a Cuttlefish escript is spun up, reads the riak.conf file and combines that with the Schema to generate an app.config. The script then exits, and a new Erlang VM (destined to run Riak) is started with that generated app.config. Down the line somewhere, you may be troubleshooting some part of Riak, and the support organization at Basho may need you to manipulate a configuration setting that is not exposed by the schema because it is so infrequently used. In that case, we can set that setting directly in an advanced.config which sits in the same directory as riak.conf.

I hope that gives you a good idea about how this works at a high level.

What's it look like to Erlang Developers?

You can learn more about the technical implementation of schemas at: https://github.com/basho/cuttlefish/wiki/Cuttlefish-for-Erlang-Developers

What's it look like to users?

Riak uses the semantic of $conf_dir/app.config for configuration. We're going to replace that with a file called riak.conf, with a syntax that looks like this:

ring_size = 32
anti_entropy = debug
log.error.file = /var/log/error.log
log.console.file = /var/log/console.log
log.syslog = on

More information for users here: https://github.com/basho/cuttlefish/wiki/Cuttlefish-for-Application-Users

What's it look like to application packagers?

Current Status

Cuttlefish is ready for production deployments.

Re-generating parser

rebar3 as dev neotoma

Please see the NOTE in src/conf_parse.peg as well.

More Repositories

1

riak

Riak is a decentralized datastore from Basho Technologies.
Shell
3,841
star
2

riak_core

Distributed systems infrastructure used by Riak.
Erlang
1,185
star
3

bitcask

because you need another a key/value storage engine
Erlang
1,179
star
4

rebar

ATTENTION: Please find the canonical repository here:
Erlang
1,070
star
5

riak_kv

Riak Key/Value Store
Erlang
633
star
6

riak_cs

Riak CS is simple, available cloud storage built on Riak.
Erlang
564
star
7

leveldb

Clone of http://code.google.com/p/leveldb/
C++
408
star
8

erlang_protobuffs

An implementation of Google's Protocol Buffers for Erlang, based on ngerakines/erlang_protobuffs.
Erlang
390
star
9

riak_dt

Convergent replicated datatypes in Erlang
Erlang
346
star
10

riak-python-client

The Riak client for Python.
Python
324
star
11

riak-erlang-client

The Riak client for Erlang.
Erlang
312
star
12

basho_bench

A load-generation and testing tool for basically whatever you can write a returning Erlang function for.
Erlang
310
star
13

eleveldb

Erlang LevelDB API
C++
266
star
14

riak-java-client

The Riak client for Java.
Java
264
star
15

yokozuna

Riak + Solr
Erlang
245
star
16

erlang_js

A linked-in driver for Erlang to Mozilla's Spidermonkey Javascript runtime.
Erlang
238
star
17

riak-ruby-client

The Riak client for Ruby.
Ruby
232
star
18

basho_docs

Basho Products Documentation
SCSS
169
star
19

riak_ensemble

Multi-Paxos framework in Erlang
Erlang
166
star
20

riak-php-client

PHP clients for Riak
PHP
163
star
21

riak_pipe

Riak Pipelines
Erlang
162
star
22

clique

CLI Framework for Erlang
Erlang
147
star
23

riak_search

Full-text search engine based on Riak
Erlang
141
star
24

riak_control

Webmachine-based administration interface for Riak.
CSS
136
star
25

machi

Machi file store
Erlang
122
star
26

enm

Erlang driver for nanomsg
Erlang
120
star
27

sidejob

Parallel worker and capacity limiting library for Erlang
Erlang
104
star
28

riak-go-client

The Riak client for Go.
Go
91
star
29

node_package

RPM/Debian/FreeBSD/SmartOS/Solaris/OSX packaging templates for Erlang Nodes
Shell
90
star
30

merge_index

MergeIndex is an Erlang library for storing ordered sets on disk. It is very similar to an SSTable (in Google's Bigtable) or an HFile (in Hadoop).
Erlang
81
star
31

riak_function_contrib

Riak Function Contrib
Erlang
79
star
32

mochiweb

a branch of Mochi Media's excellent HTTP library -- their canonical source can be found at https://github.com/mochi/mochiweb
Erlang
78
star
33

riak-dotnet-client

The Riak client for .NET
C#
76
star
34

riak_sysmon

Simple OTP app for managing Erlang VM system_monitor event messages
Erlang
74
star
35

riak-nodejs-client

The Riak client for Node.js.
JavaScript
72
star
36

riak_pb

Riak Protocol Buffers Messages
Erlang
71
star
37

riak_test

I'm in your cluster, testing your riaks
Erlang
70
star
38

cluster_info

Fork of Hibari's nifty cluster_info OTP app
Erlang
63
star
39

ebloom

A NIF wrapper around a basic bloom filter.
C++
62
star
40

spark-riak-connector

The official Riak Spark Connector for Apache Spark with Riak TS and Riak KV
Scala
60
star
41

innertube

A thread-safe re-entrant resource pool for Ruby, extracted from the Riak Ruby Client.
Ruby
59
star
42

lager_syslog

Syslog backend for lager
Erlang
59
star
43

riaknostic

A diagnostic tool for Riak installations, to find common errors asap
Erlang
58
star
44

riaktant

A node.js sample app that stores syslog messages in Riak Search
JavaScript
56
star
45

riak_repl

Riak DC Replication
Erlang
55
star
46

giddyup

Visual scorecard for riak_test.
JavaScript
54
star
47

riak-erlang-http-client

Riak Erlang client using the HTTP interface
Erlang
48
star
48

riak_crdt_cookbook

A Cookbook full of Tutorials to get Developers started with Riak's CRDTs
Erlang
42
star
49

riak_err

Enhanced SASL Error Logger for Riak
Erlang
36
star
50

riak-hadoop

Riak data as input to hadoop m/r and output of hadoop m/r
Java
33
star
51

cloudformation-riak

Create Riak clusters with AWS CloudFormation
31
star
52

innostore

Innostore is a simple Erlang API to Embedded InnoDB.
C
31
star
53

riak_ql

SQL query language for Riak
Erlang
30
star
54

riak_api

Riak Client APIs
Erlang
27
star
55

luke

Dataflow / MapReduce coordination framework.
Erlang
22
star
56

taste-of-riak

Source code for all the taste of riak examples
C#
22
star
57

basho_metrics

Fast performance metrics for Erlang
C++
21
star
58

skerl

Skein hash function for Erlang, via NIFs
C
19
star
59

jam

Erlang time/date processing
Erlang
17
star
60

stanchion

Stanchion is an application to enforce the serialization of requests for Riak CS.
Erlang
16
star
61

dactyl

String templating library for Erlang
Erlang
16
star
62

faulterl

Erlang glue & control code for dynamic library-level fault injection
C++
15
star
63

tools.mk

A small makefile library for working with erlang tools
Makefile
14
star
64

nifwait

Utility to test effect of blocking NIFs on Erlang scheduler
Erlang
14
star
65

rebar_raw_resource

A rebar3 resource wrapper to accommodate non-OTP-app dependencies
Erlang
14
star
66

columbo

Columbo - the dependency detective - will highlight 3rd party dependency problems in your Erlang programs.
Erlang
14
star
67

canola

Simple PAM port driver for erlang
C
12
star
68

bashubot

Our own little hubot.
CoffeeScript
11
star
69

riak_cs_control

Webmachine-based administration interface for Riak CS.
Erlang
9
star
70

bench_shim

A Jinterface shim between basho_bench and riak-java-client
Java
9
star
71

riak_on_azure

Shell
8
star
72

basho-dtrace

DTrace scripts that Basho Team has found useful
D
8
star
73

riak-client-tools

Tools for Riak Client libraries
Shell
8
star
74

riak-nodejs-client-examples

Riak Node.js Client example code
JavaScript
8
star
75

stableboy

basho_harness VM / Harness provisioner
Erlang
7
star
76

riak_shell

A Repl for Riak
Erlang
7
star
77

riak-phppb-client

Official PHP Protocol Buffers Client for Riak
PHP
7
star
78

bashobot

A friendly little bot for the #riak IRC channel
Ruby
7
star
79

riak-zabbix

A set of tools and templates to help monitor Riak with the Zabbix monitoring tool.
ApacheConf
7
star
80

riak_cs_auth

Authentication schemes for Riak CS
Erlang
6
star
81

systest

Miscellaneous system test scripts
Erlang
6
star
82

recap-blog

[depreciated] The Riak Recap Blog
6
star
83

casbench

tools for benchmarking cassandra
Erlang
6
star
84

zdgrab

Zdgrab is a utility for downloading attachments to tickets from Zendesk.
Python
5
star
85

planet_riak

Riak Planet
Python
5
star
86

riak_cs_core

Core functionality for RIak CS
Erlang
5
star
87

data_platform

Basho Data Platform
Shell
5
star
88

data_platform_core

Basho Data Platform Core
Erlang
5
star
89

riak_auth_mods

Standard interface for security auth modules for Riak
Erlang
5
star
90

riak_cs_web

HTTP APIs for Riak Cloud Storage
Erlang
4
star
91

rfc

JavaScript
4
star
92

cluster_info_browser

In-browser app to easily flip through a cluster_info report
JavaScript
4
star
93

riak_ee-issues

Issue tracking for Riak Enterprise
3
star
94

riak_cs_lfs

Large file support for Riak CS
Erlang
3
star
95

ripple-encryption

Ruby
3
star
96

congruent

Generic test suite for Riak clients
Erlang
3
star
97

riak_cs_multibag

Riak CS Multi-cluster module
Erlang
3
star
98

riak_cs_acl

ACL support for Riak CS
Erlang
3
star
99

riak_cs_report

Reporting functionality for Riak CS
Erlang
3
star
100

velvet

Client library for Stanchion
Erlang
3
star