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A. Building & Installing Metadata
=================================

0. Prerequisites
------------------

You would need the following installed:

* JDK 1.7
* Maven 3.x


1. Building Metadata
--------------------

Building DGI from the source repository
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

* git clone git@github.com:hortonworks/metadata.git metadata
* cd metadata
* export MAVEN_OPTS="-Xmx1024m -XX:MaxPermSize=256m" && mvn clean install


2. Deploying DGI
---------------------

Once the build successfully completes, artifacts can be packaged for deployment.

* mvn clean assembly:assembly -DskipTests -DskipITs

Tar can be found in {project dir}/target/apache-metadata-${project.version}-bin.tar.gz

Tar is structured as follows

|- bin
   |- metadata-start.sh
   |- metadata-stop.sh
|- conf
   |- application.properties
   |- graph.properties
   |- log4j.xml
|- docs
|- server
   |- webapp
      |- metadata.war
|- README
|- NOTICE.txt
|- LICENSE.txt
|- DISCLAIMER.txt
|- CHANGES.txt

3. Installing & running DGI
--------------------------------

a. Installing DGI
~~~~~~~~~~~~~~~~~~~~~~

* tar -xzvf apache-metadata-${project.version}-bin.tar.gz
* cd metadata-${project.version}

b. Starting DGI Server
~~~~~~~~~~~~~~~~~~~~~~~~~

* bin/metadata-start.sh

c. Using DGI
~~~~~~~~~~~~~~~

* Verify if the server is up and running
  curl -v http://localhost:21000/api/metadata/admin/version
  {"Version":"v0.1"}

* List the types in the repository
  curl -v http://localhost:21000/api/metadata/types
  {"list":["biginteger","short","byte","int","string","bigdecimal","boolean","date","double","long","float"],"requestId":"902580786@qtp-1479771328-0"}

* List the instances for a given type
  curl -v http://localhost:21000/api/metadata/entities?type=hive_table
  {"requestId":"788558007@qtp-44808654-5","list":["cb9b5513-c672-42cb-8477-b8f3e537a162","ec985719-a794-4c98-b98f-0509bd23aac0","48998f81-f1d3-45a2-989a-223af5c1ed6e","a54b386e-c759-4651-8779-a099294244c4"]}

  curl -v http://localhost:21000/api/metadata/entities/list/hive_db

* Search for entities (instances) in the repository
  curl -v http://localhost:21000/api/metadata/discovery/search/dsl?query="from hive_table"

d. Stopping DGI Server
~~~~~~~~~~~~~~~~~~~~~~~~~

* bin/metadata-stop.sh
