https://github.com/nayibor/iso8583_erl

erlang codec for iso8583 financial message protocol
https://github.com/nayibor/iso8583_erl

elixir erlang fintech iso8583 payment-processing

Last synced: 9 days ago
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erlang codec for iso8583 financial message protocol

• Host: GitHub
• URL: https://github.com/nayibor/iso8583_erl
• Owner: nayibor
• License: mit
• Created: 2017-04-29T02:47:50.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2024-02-12T16:33:41.000Z (9 months ago)
• Last Synced: 2024-10-30T16:56:09.541Z (15 days ago)
• Topics: elixir, erlang, fintech, iso8583, payment-processing
• Language: Erlang
• Homepage: https://nayibor.github.io/posts/using-iso8583_erl-library/
• Size: 166 KB
• Stars: 5
• Watchers: 3
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
iso8583_erl

=====

An erlang library for processing iso8583 messages inspired by [erl8583],[jpos library].

This is a minimalist library for  packing and unpacking iso8583 financial messages.

It accepts a specification file which contains information about fields,mti,bitmap  for your interchange.

It then uses those specifications to then pack and unpack iso messages for your interchange.

The specification can be loaded once and then used for all packing and unpacking operations

## usage ##

the library can be used by putting the following in your rebar.config or mix.exs

rebar.config

```erlang

{iso8583_erl,{git,"https://github.com/nayibor/iso8583_erl.git",{tag,"0.4.1"}}}

```

mix.exs

```elixir

{:iso8583_erl, "~> 0.4.1"}

```

## quickstart ##

```erlang

%set mti

	Specification = iso8583_erl:load_specification(code:priv_dir(iso8583_erl)++"/custom.cfg"),

	{ok,First_map} = iso8583_erl:set_mti(maps:new(),<<"0200">>),

%set field

	{ok,Second_map} = iso8583_erl:set_field(First_map,3,<<"201234">>),

%pack_data

	%%one way to pack data

	{ok,First_map} = iso8583_erl:set_mti(maps:new(),<<"0200">>),

	{ok,Second_map} = iso8583_erl:set_field(First_map,3,<<"201234">>),

	{ok,Third_map} = iso8583_erl:set_field(Second_map,4,<<"4.5">>),

	{ok,Fourth_map} = iso8583_erl:set_field(Third_map,5,<<"5000">>),

	{ok,Fifth_map} = iso8583_erl:set_field(Fourth_map,102,<<"123413243">>),

	{ok,Six_map} = iso8583_erl:set_field(Fifth_map,103,<<"12897979987">>),

	[Mti,Bitmap_final_bit,Fields_list] = iso8583_erl:pack(Six_map,Specification),

	%another way to pack data

	Map_send_list = iso8583_erl:set_field_list([{mti,<<"0200">>},{3,<<"201234">>},{4,<<"4.5">>},{5,<<"5000">>},{102,<<"123413243">>},{103,<<"12897979987">>}]),

	[Mti,Bitmap_final_bit,Fields_list] = iso8583_erl:pack(Map_send_list,Specification).

%unpack data

	{ok,First_map} = iso8583_erl:set_mti(maps:new(),<<"0200">>),

	{ok,Second_map} = iso8583_erl:set_field(First_map,3,<<"001234">>),

	{ok,Third_map} = iso8583_erl:set_field(Second_map,4,<<"123456789012">>),

	{ok,Fourth_map} = iso8583_erl:set_field(Third_map,5,<<"123456789012">>),

	[Mti,Bitmap_final_bit,Fields_list] = iso8583_erl:pack(Fourth_map,Specification),

	Final_fields = [Mti,Bitmap_final_bit,Fields_list],

	Map_data = #{3 => <<"001234">>,4 => <<"123456789012">>,5 => <<"123456789012">>,

    bit => <<"3800000000000000">>,mti => <<"0200">>},

	?assertEqual(true,Map_data =:= iso8583_erl:unpack(Final_fields,Specification)).

```

## to create documentation ##

to create documentation run command below 

```erlang

rebar3 ex_doc

```

more examples of usage can be found in  ```test/iso8583_erl_SUITE.erl```

## acknowledgements ##

i wish to thank the creators of the jpos library from which gave a lot of great ideas.

i also wish to thank the creators of erl8583 library which gave a lot of excellent ideas.

[erl8583]: https://github.com/mgwidmann/erl8583

[jpos library]: https://github.com/jpos/jPOS

[hex]: https://hex.pm/packages/iso8583_erl