This guide is meant to get someone up and running with a Fedora 4 instance whose updates are automatically indexed in a Solr repository. This guide glosses over many of the working details and should just be considered a starting point for testing this feature. The document assumes a posix operating system with curl, a text editor, java, git, and a download of apache solr 4.6.0.
Install and Start Fedora 4
This guide assumes Fedora 4 is running on port 8080 with a jms port of 61616.
Install, Configure and Start Solr
wget http://mirror.cogentco.com/pub/apache/lucene/solr/4.6.0/solr-4.6.0.tgz tar -xzf solr-4.6.0.tgz
Edit solr-4.6.0/example/solr/collection1/conf/solrconfig.xml:
<!-- To enable dynamic schema REST APIs, use the following for <schemaFactory>: -->
<schemaFactory class="ManagedIndexSchemaFactory">
<bool name="mutable">true</bool>
<str name="managedSchemaResourceName">managed-schema</str>
</schemaFactory>
<!-- When ManagedIndexSchemaFactory is specified, Solr will load the schema from
the resource named in 'managedSchemaResourceName', rather than from schema.xml.
Note that the managed schema resource CANNOT be named schema.xml. If the managed
schema does not exist, Solr will create it after reading schema.xml, then rename
'schema.xml' to 'schema.xml.bak'.
Do NOT hand edit the managed schema - external modifications will be ignored and
overwritten as a result of schema modification REST API calls.
When ManagedIndexSchemaFactory is specified with mutable = true, schema
modification REST API calls will be allowed; otherwise, error responses will be
sent back for these requests.
-->
<!-- <schemaFactory class="ClassicIndexSchemaFactory"/> -->
The fcrepo-jms-indexer-pluggable SolrIndexer implementation does not commit upon updates. In order to see the changes, you must configure solr to have a commit strategy that is appropriate for your use. Node removal events do trigger a commit.
<!-- AutoCommit
Perform a hard commit automatically under certain conditions.
Instead of enabling autoCommit, consider using "commitWithin"
when adding documents.
http://wiki.apache.org/solr/UpdateXmlMessages
maxDocs - Maximum number of documents to add since the last
commit before automatically triggering a new commit.
maxTime - Maximum amount of time in ms that is allowed to pass
since a document was added before automatically
triggering a new commit.
openSearcher - if false, the commit causes recent index changes
to be flushed to stable storage, but does not cause a new
searcher to be opened to make those changes visible.
If the updateLog is enabled, then it's highly recommended to
have some sort of hard autoCommit to limit the log size.
-->
<autoCommit>
<maxTime>${solr.autoCommit.maxTime:15000}</maxTime>
<openSearcher>false</openSearcher>
</autoCommit>
Start solr and verify that it is running at http://localhost:8983/solr.
cd solr-4.6.0/example java -jar start.jar
Add the "uuid" field ("title" and "id" already exist).
curl -X POST -H "Content-Type: application/json" --data-binary "@solr-fields.json" "http://localhost:8983/solr/schema/fields"
[{"name":"uuid","type":"text_general","stored":"true","indexed":"true"}]
Download, Build, Configure and Start fcrepo-jms-indexer-pluggable
git clone git@github.com:futures/fcrepo-jms-indexer-pluggable.git
Edit the configuration at fcrepo-jms-indexer-pluggable/fcrepo-jms-indexer-webapp/src/main/resources/spring/indexer-core.xml to point to your solr installation.
<!-- Solr Indexer START-->
<bean id="solrIndexer" class="org.fcrepo.indexer.solr.SolrIndexer">
<constructor-arg ref="solrServer" />
</bean>
<!--External Solr Server -->
<bean id="solrServer" class="org.apache.solr.client.solrj.impl.HttpSolrServer">
<constructor-arg index="0" value="http://${fcrepo.host:localhost}:${solrIndexer.port:8983}/solr/" />
</bean>
<!-- Solr Indexer END-->
<!-- Message Driven POJO (MDP) that manages individual indexers -->
<bean id="indexerGroup" class="org.fcrepo.indexer.IndexerGroup">
<property name="repositoryURL" value="http://${fcrepo.host:localhost}:${fcrepo.port:8080}/rest" />
<property name="indexers">
<set>
<!--
<ref bean="fileSerializer"/>
<ref bean="sparqlUpdate"/> -->
<!--To enable solr Indexer, please uncomment line below -->
<ref bean="solrIndexer"/>
</set>
</property>
</bean>
Start the application (in this case on port 9999).
mvn clean install -DskipTests cd fcrepo-jms-indexer-webapp mvn -Djetty.port=9999 jetty:run
Create an Indexable object
curl -v -X PUT -H "Content-Type: text/turtle" --data-binary "@object.rdf" "http://localhost:8080/rest/indexableObject"
PREFIX dc: <http://purl.org/dc/elements/1.1/> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX indexing: <http://fedora.info/definitions/v4/indexing#> <> indexing:hasIndexingTransformation "default"; rdf:type indexing:indexable; dc:title "This title will show up in the index."
Ensure that the records are committed to solr (either through an explicit commit or waiting until the configured commit period is up) and then see that they show up.
