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The Collections API manages Fusion collections. It provides endpoints for creating, updating, and deleting collection, as well as endpoints for getting a collection’s status and usage statistics. Fusion maintains internal system collections for logs, blobs, and metrics data which operate in conjunction with collections created by users. The Collections API is used to manage all Fusion collections. For more information, view the API specification.

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Data commit functionality

Solr offers three methods to determine when newly-indexed documents are made visible in searches. The methods are manual commits, auto commit settings, and the per-update commitWithin parameter. Fusion relies on Solr’s commit mechanisms, but adds a Fusion-managed commitWithin policy per collection. Fusion’s typical commit configuration includes:
  • The autoCommit setting (Solr hard commit) is inherited from the collection’s solrconfig.xml and is typically set to 15 seconds with openSearcher=false. This persists data to disk at that interval without opening a new searcher, which helps maintain search performance.
  • The autoSoftCommit setting (Solr soft commit) is turned off by default, with Fusion relying on the commitWithin setting to make data visible to searches.
  • Solr’s commitWithin parameter configured at the collection level with a default of 10000 milliseconds, ensures data is committed and available for searching within 10 seconds. The default for signals collections is 1000 milliseconds. Fusion uses commitWithin to avoid relying on specific Solr-side configurations. The com.lucidworks.apollo.solr.commitWithin global property defines the default commitWithin for all documents added through Fusion. When you create a new collection in Fusion, its per-collection commitWithin is initialized from this global default.

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Examples

In order to see this object within the Fusion UI, it must be associated with an app. To do this, create the object using the /apps endpoint.
Create a new collection called ‘newCollection’, with appropriate SolrCloud environment settings: REQUEST 
curl -u USERNAME:PASSWORD -X POST -H 'Content-type: application/json' -d '{"name": "newCollection","solrParams":{"replicationFactor":1,"numShards":1}}' https://FUSION_HOST:FUSION_PORT/api/collections
RESPONSE 
{
  "id" : "newCollection",
  "createdAt" : "2014-09-19T18:46:52.954Z",
  "searchClusterId" : "default",
  "solrParams" : {
    "name" : "newCollection",
    "numShards" : 1,
    "replicationFactor" : 1
  },
  "type" : "DATA",
  "metadata" : { }
}
Create a collection named ‘local-collection1’ that refers to ‘collection1’ in a pre-existing SolrCloud cluster named ‘Solr4.10’: REQUEST 
curl -u USERNAME:PASSWORD -X POST -H 'Content-type: application/json' -d '{"id":"local-collection1", "searchClusterId":"Solr4.10", "solrParams":{"name":"collection1"}}' https://FUSION_HOST:FUSION_PORT/api/collections
RESPONSE 
{
  "id" : "local-collection1",
  "createdAt" : "2014-09-19T18:48:45.396Z",
  "searchClusterId" : "Solr4.10",
  "solrParams" : {
    "name" : "collection1"
  },
  "type" : "DATA",
  "metadata" : { }
}
Delete a collection, but keep the associated signals and searchLogs collections: REQUEST 
curl -u USERNAME:PASSWORD -X DELETE https://FUSION_HOST:FUSION_PORT/api/collections/newCollection?purge=false
Get the status of the ‘demo’ collection: REQUEST 
curl -u USERNAME:PASSWORD https://FUSION_HOST:FUSION_PORT/api/collections/demo/status
RESPONSE 
{
  "maxShardsPerNode" : 1,
  "replicationFactor" : 1,
  "shards" : {
    "shard1" : {
      "range" : "80000000-7fffffff",
      "state" : "active",
      "replicas" : {
        "core_node1" : {
          "state" : "active",
          "core" : "demo_shard1_replica1",
          "leader" : true,
          "base_url" : "https://FUSION_HOST:8983/solr",
          "node_name" : "FUSION_HOST:8983_solr"
        }
      }
    }
  }
}
Get stats for the ‘demo’ collection: REQUEST 
curl -u USERNAME:PASSWORD https://FUSION_HOST:FUSION_PORT/api/collections/demo/stats
RESPONSE 
{
  "collectionId" : "demo",
  "documentCount" : 536,
  "requestCount" : 6,
  "qps" : 28.34716542561849,
  "sizeInBytes" : 7646045,
  "lastModified" : "2014-05-19T19:58:33.545Z"
}
Add the recommendations feature for the ‘tempy’ collection:
For more information on collection features and feature management, see Collection Features API
Use this structure to send the request: 
https://FUSION_HOST:FUSION_PORT/api/collections/{collection}/features/{feature}

curl -u USERNAME:PASSWORD -X POST -H 'Content-type: application/json' -d @enable-recommendations.json https://FUSION_HOST:FUSION_PORT/api/apps/Recommender-App/collections/tempy/features/recommendations -v
Make sure to change the collection-id in the JSON and save as a file or send directly in the string. Recommendations JSON: 
{
"name": "recommendations",
"collectionId": "tempy",
"params":

{ "idField": "id", "itemsForUser": true, "itemsForQuery": false, "itemsForItem": true, "queriesForQuery": false }
,
"enabled": true
}
Signals JSON: 
{
"name": "signals",
"collectionId": "tempy",
"params": {},
"enabled": false
},
Search Logs JSON: 
{
"name": "searchLogs",
"collectionId": "tempy",
"params": {},
"enabled": false
}
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