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# Set-up Virtuoso+Xapian on Production
## Tags
* assigned: bonfacem, zachs, fredm
* priority: high
* type: ops
* keywords: virtuoso
## Description
We already have virtuoso set-up in tux02. Right now, to be able to interact with RDF, we need to have virtuoso set-up. This issue will unblock:
* Global Search in Production
=> https://github.com/genenetwork/genenetwork3/pull/137 Update RDF endpoints
=> https://github.com/genenetwork/genenetwork2/pull/808 UI/RDF frontend
## HOWTO: Updating Virtuoso in Production (Tux01)
Note where the virtuoso data directory is mapped from the "production.sh" script as you will use this in the consequent steps:
> --share=/export2/guix-containers/genenetwork/var/lib/virtuoso=/var/lib/virtuoso
### Generating the TTL Files
* Run "generate-ttl-files" to generate the TTL files:
```
time guix shell guile-dbi -m manifest.scm -- ./generate-ttl-files.scm --settings conn-dev.scm --output /export2/guix-containers/genenetwork-development/var/lib/virtuoso --documentation /tmp/doc-directory
```
=> https://git.genenetwork.org/gn-transform-databases/tree/generate-ttl-files.scm generate-ttl-files.scm
* (Recommended) Alternatively, copy over the TTL files (in Tux02) to the correct shared directory in the container ("--share=/export2/guix-containers/genenetwork-development/var/lib/virtuoso=/var/lib/virtuoso"):
> cp /home/bonfacem/ttl-files/*ttl /export2/guix-containers/genenetwork/var/lib/virtuoso/
### Loading the TTL Files
* Make sure that the virtuoso service type has the "dirs-allowed" variable set correctly:
```
(service virtuoso-service-type
(virtuoso-configuration
(server-port 7892)
(http-server-port 7893)
(dirs-allowed "/var/lib/virtuoso")))
```
* Get into isql:
> guix shell virtuoso-ose -- isql 7892
* Make sure that no pre-existing files exist in "DB.DBA.LOAD_LIST":
> SQL> select * from DB.DBA.LOAD_LIST;
> SQL> delete from DB.DBA.load_list;
* Delete the genenetwork graph:
> SQL> DELETE FROM rdf_quad WHERE g = iri_to_id('http://genenetwork.org');
* Load all the TTL files (This takes some time):
> SQL> ld_dir('/var/lib/virtuoso', '*.ttl', 'http://genenetwork.org');
> SQL> rdf_loader_run();
> SQL> CHECKPOINT;
* Verify you have some RDF data by running:
```
SQL> SPARQL
PREFIX gn: <http://genenetwork.org/id/>
PREFIX gnc: <http://genenetwork.org/category/>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX gnt: <http://genenetwork.org/term/>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX taxon: <http://purl.uniprot.org/taxonomy/>
SELECT * WHERE {
?s skos:member gn:Mus_musculus .
?s ?p ?o .
};
```
* Update GN3 Configurations to point to the correct Virtuoso instance:
> SPARQL_ENDPOINT="http://localhost:7893/sparql"
## Generating the Xapian Index
* Make sure you are using the correct guix profile or that you have your PYTHONPATH pointing to the GN3 repository.
* Generate the Xapian Index using "genenetwork3/scripts/create-xapian-index" against the correct output directory (The build takes around 71 minutes on an SSD Drive):
> time python index-genenetwork create-xapian-index /export/data/genenetwork-xapian/ mysql://<user>:<password>@localhost/db_webqtl http://localhost:7893/sparql
* After the build, you can verify that the index works by:
> guix shell xapian -- xapian-delve /export/data/genenetwork-xapian/
* Update GN3 configuration files to point to the right Xapian path:
> XAPIAN_DB_PATH="/export/data/genenetwork-xapian/"
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