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legion-discovery: A discovery service based on Legion.

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A simple service discovery service based on Legion, that natively supports the idea of interface versions, and the idea that clients may only be interested in finding certain (compatible) versions of the services they are looking for.

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Versions [RSS] 0.2.1.0, 0.2.1.1, 0.2.2.0, 0.2.2.1, 0.2.2.2, 0.3.0.0, 0.3.0.1, 0.3.0.2, 1.0.0.0, 1.0.0.1
Dependencies aeson (>=0.11.2.1 && <1.1), attoparsec (>=0.13.1.0 && <0.14), base (>=4.8 && <4.10), binary (>=0.8.3.0 && <0.9), bytestring (>=0.10.8.1 && <0.11), Cabal (>=1.24.0.0 && <1.25), canteven-http (>=0.1.2.0 && <0.2), canteven-log (>=2.0.0.1 && <2.1), conduit (>=1.2.8 && <1.3), containers (>=0.5.7.1 && <0.6), data-default-class (>=0.1.2.0 && <0.2), ekg (>=0.4.0.11 && <0.5), graphviz (>=2999.18.1.2 && <2999.19), http-api-data (>=0.2.4 && <0.4), http-grammar (>=0.1.0.0 && <0.2), legion (>=0.9 && <0.10), legion-discovery, legion-extra (>=0.1.2.0 && <0.2), monad-logger (>=0.3.20.1 && <0.4), mtl (>=2.2.1 && <2.3), servant-server (>=0.8.1 && <0.10), SHA (>=1.6.4.1 && <1.7), text (>=1.2.2.1 && <1.3), time (>=1.6.0.1 && <1.7), wai (>=3.2.1.1 && <3.3), wai-extra (>=3.0.19 && <3.1), warp (>=3.2.9 && <3.3) [details]
License Apache-2.0
Copyright 2016 Rick Owens
Author Rick Owens
Maintainer rick@owensmurray.com
Category value
Home page https://github.com/owensmurray/legion-discovery#readme
Source repo head: git clone https://github.com/owensmurray/legion-discovery
Uploaded by taphu at 2017-04-30T19:58:51Z
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Executables legion-discovery
Downloads 6495 total (47 in the last 30 days)
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Status Docs available [build log]
Last success reported on 2017-04-30 [all 1 reports]

Readme for legion-discovery-1.0.0.1

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legion-discovery

A simple service discovery service based on Legion, that natively supports the idea of interface versions, and the idea that clients may only be interested in finding certain (compatible) versions of the services they are looking for.

The initial motivation for this project is to act as a test driver for the Legion framework. Since the status of that framework is still experimental, the status of this service is also experimental.

API

POST /v1/ping

Register a service. The service name and version are obtained via the User-Agent header field. Registration expires in 30 seconds.

  • Request
  • Response 204 No Content: indicates a successful registration.

GET /v1/services/:serviceId

Returns all current instances of a service, regardless of version.

GET /v1/services/:serviceId/:versionRange

Returns the service instances that match the requested version range. The version range syntax is the same as what cabal understands (e.g. >= 0.1 && < 0.2). You are really going to want to make sure and url encode this segment of the url.

GET /v1/graph

Returns a visualization of the service interactions. This endpoint supports multiple content types via the Accept header.

Content Types

application/vnd.legion-discovery.instance-list+json

{
    "https://host1:8080": {
        "version": "1.0.2.0"
    },
    "https://host2:8080": {
        "version": "1.0.2.0"
    },
    "https://host3:8080": {
        "version": "1.0.2.0"
    }
}

application/vnd.legion-discovery.ping-request+json

{
    "serviceAddress": "https://host3:8080"
}