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data-matching

1.23.2 • Public • Published

data-matching

Matches a data object against a match object.

Syntax details

  • Part of strings can be collected using '!{name}' syntax (see https://github.com/MayamaTakeshi/string-matching)
  • data can be collected (stored in a dictionary passed to matching function) by using dm.collect('name')
  • data that should be absent can be declared with dm.absent

Sample usage

Full match (all specified data must be present):

const dm = require("data-matching")
const assert = require('assert')

var received = {
    connection: { ip: '192.168.2.10' },
    media: [
        {
            type: 'application',
            port: 9,
            protocol: 'TCP/MRCPv2',
            payloads: ["0"],
            setup: 'active',
            connection: 'new',
            resource: 'speechsynth'
        },
        {
            type: 'audio',
            port: 14238,
            protocol: 'RTP/AVP',
            payloads: ["0", "8", "96"],
        }
    ]
}

var expected = {
    connection: { ip: dm.collect('remote_ip') },
    media: [
        {
            type: 'application',
            port: 9,
            protocol: '!{transport_protocol}/MRCP!{mrcp_version}',
            payloads: [dm.collect('mrcp_payload')],
            setup: 'active',
            connection: 'new',
            resource: dm.any_of(['speechsynth', 'speechrecog'], 'media_resource')
        },
        {
            type: 'audio',
            port: 14238,
            protocol: 'RTP/AVP',
            payloads: ["0", "8", "96"],
        }
    ]
}

var store = {}
assert(dm.full_match(expected)(received, store))
assert(store.remote_ip == "192.168.2.10")
assert(store.mrcp_payload == "0")
assert(store.media_resource == 'speechsynth')
assert(store.mrcp_version == 'v2')
assert(store.transport_protocol == 'TCP')

Partial match (only part of the data must match):

const dm = require("data-matching")
const assert = require('assert')


var received = {
    request_uri: 'sip:alice@abc.com',
    from_uri: '<sip:bob@cba.com>',
    to_uri: 'sip:alice@abc.com',
    call_id: 'ee98b779-3048-41cf-b85b-0a05bcc4038a',
    cseq: 'INVITE 50',
}


var expected = {
    request_uri: 'sip:!{user1}@!{domain1}',
    from_uri: '<sip:!{user2}@!{domain2}>',
    cseq: '!{method} 50',
    some_absent_key: dm.absent,
}


var store = {}
assert(dm.partial_match(expected)(received, store))
assert(store.user1 == 'alice')
assert(store.domain1 == 'abc.com')
assert(store.user2 == 'bob')
assert(store.domain2 == 'cba.com')
assert(store.method == 'INVITE')

More examples:

See https://github.com/MayamaTakeshi/data-matching/blob/master/test/matching.test.js

Install

npm i data-matching

DownloadsWeekly Downloads

8

Version

1.23.2

License

MIT

Unpacked Size

29.8 kB

Total Files

10

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