Merritt Ingest Gem

This microservice is part of the Merritt Preservation System.

Purpose

This library provides utility methods for preparing content for ingest into Merritt.

Used By

This code is used by

• Merritt UI

Build instructions

$ gem build mrt-ingest.gemspec
$ sudo gem install mrt-ingest-0.0.1.gem

Test instructions

The code below creates a new Merritt object with content consisting of two local files and one remote URL. The object is submitted to Merritt as a manifest, with the manifest, local files, and mrt-erc.txt made available to Ingest by an Mrt::Ingest::OneTimeServer -- a simple WEBrick-based server that finds itself an open port, serves each file from a temporary directory, and when all files have been served, shuts down.

require 'mrt/ingest'

client = Mrt::Ingest::Client.new(
  "http://merritt.cdlib.org/object/ingest",
  USERNAME,
  PASSWORD
)
ingest_profile = "demo_merritt_content"
user_agent = "me/My Name"

obj = Mrt::Ingest::IObject.new(
  erc: {
    "who" => "Doe, John",
    "what" => "Hello, world",
    "when/created" => "2011"
  }
)
obj.add_component(File.new("/tmp/helloworld_a"))
obj.add_component(File.new("/tmp/helloworld_b"))
obj.add_component(
  URI.parse("http://example.org/xxx"),
  name: "helloworld_c",
  digest: Mrt::Ingest::MessageDigest::MD5.new("6f5902ac237024bdd0c176cb93063dc4")
)

obj.start_ingest(client, ingest_profile, user_agent)
obj.finish_ingest # waits for all files to be served, then shuts down

For a more detailed example, see the Merritt::Atom module of the Merritt dashboard.

Internal Links