archivematica-workflow

README

archivematica-workflow

archivematica-workflow is a lightweight service part of Archivematica used to distribute Archivematica workflows and make them available over the network.

Motivation

Ongoing discussion: https://goo.gl/8c4X7G.

Visit our Transifex project if you want to contribute in the translation of the Archivematica workflow data or in other components related to the Archivematica project.

Building from sources

Install Go 1.7 or newer, set up your $GOPATH and run:

$ go get -u github.com/artefactual-labs/archivematica-workflow/...

Binaries archivematica-workflow and archivematica-workflow-cli should now be available under $GOPATH/bin directory.

Development notes

These are some tools that you should install for development purposes:

$ go get -u github.com/kardianos/govendor
$ go get -u github.com/jteeuwen/go-bindata/go-bindata
$ go get -u github.com/golang/protobuf/{proto,protoc-gen-go}

You will also need protoc 3.1 or newer, the protobuf compiler.

Note that we're using govendor to manage our Go dependencies but [dep] (https://docs.google.com/document/d/1qnmjwfMmvSCDaY4jxPmLAccaaUI5FfySNE90gB0pTKQ/edit) will be adopted as soon as it is released. govendor is very intuitive though (see cheatsheet) - these are some of the things that you can do with it:

• Compile the sources: govendor install +local.
• Run tests: govendor test +local.
• List vendored dependencies: govendor list +vendor

Workflows

The only workflow currently available is default.json. It has been generated with json-links which is part of the archivematica-devtools repository.

The schema used to encode the workflow data has not been specified yet. We're investigating better ways to do this, like linked data.

Workflows are currently embedded into the final binary to simplify the distribution process. Further development may incorporate more sophisticated workflow management options.

The embedding process of the dist directory is done with go-bindata, which must be installed previously. pkg/service/dist/dist.go is the file invoking go:generate. The generated code is located at pkg/service/dist/assets.go. The contents of dist/ can be harvested using the generated API which you can explore with go doc ./pkg/service/dist. If you want to embed new data, please run:

$ go generate ./pkg/service/dist

We check in the generated code in the repository so the application is "go gettable".

Workflow data extraction and translations

The dist/default/default.json file contains the JSON-encoded workflow data available in Archivematica (qa/1.x branch). It is generated with json-links which is part of archivematica-devtools. For example, the following command will encode the workflow database existing in your database:

$ am json-links --locale-dir=dist/workflows/locale/default dist/workflows/default.json

When --locale-dir is used, predicatably, json-links does the following things:

• Populates the latest version of en.json so it can be pushed to Transifex (with `tx push -s).
• Populates the translation objects in dist/workflows/default.json using the translations available under the given directory. Make sure that the translations are up todate in advance with tx pull -a.

Transifex is our localization platform. Workflow messages can be found at https://www.transifex.com/artefactual/archivematica/mcp-workflow/.

Deployment

• Ansible role.
• Docker image not available yet!