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/**
cmd can be any valid ES query command
**/
var peliasLogger = require( 'pelias-logger' ).get( 'service/search' );
function service( backend, cmd, cb ){
// query new backend
backend().client.search( cmd, function( err, data ){
// handle backend errors
if( err ){ return cb( err ); }
// log total ms elasticsearch reported the query took to execute
peliasLogger.verbose( 'time elasticsearch reported:', data.took / 1000 );
// map returned documents
var docs = [];
var meta = {
scores: []
};
if( data && data.hits && data.hits.total && Array.isArray(data.hits.hits)){
docs = data.hits.hits.map( function( hit ){
meta.scores.push(hit._score);
// map metadata in to _source so we
// can serve it up to the consumer
hit._source._id = hit._id;
hit._source._type = hit._type;
hit._source._score = hit._score;
hit._source._matched_queries = hit._matched_queries;
return hit._source;
});
}
// fire callback
return cb( null, docs, meta );
});
}
module.exports = service;