/**
* Search against all repositories using provided parameters. Note there are a few different types
* of searches you can perform. If you provide the 'q' query parameter, a keyword search will be
* performed. If you provide the 'g, a, v, p or c' query parameters, a maven coordinate search
* will be performed. If you provide the 'cn' query parameter, a classname search will be
* performed. If you provide the 'sha1' query parameter, a checksum search will be performed.
*
* @param q provide this param for a keyword search (g, a, v, p, c, cn, sha1 params will be
* ignored).
* @param sha1 provide this param for a checksum search (g, a, v, p, c, cn params will be
* ignored).
* @param cn provide this param for a classname search (g, a, v, p, c params will be ignored).
* @param g group id to perform a maven search against (can be combined with a, v, p & c params as
* well).
* @param a artifact id to perform a maven search against (can be combined with g, v, p & c params
* as well).
* @param v version to perform a maven search against (can be combined with g, a, p & c params as
* well).
* @param p packaging type to perform a maven search against (can be combined with g, a, v & c
* params as well).
* @param c classifier to perform a maven search against (can be combined with g, a, v & p params
* as well).
* @param from result index to start retrieving results from.
* @param count number of results to have returned to you.
* @param repositoryId The repositoryId to which repository search should be narrowed. Omit if
* search should be global.
*/
@Override
@GET
@ResourceMethodSignature(
queryParams = {
@QueryParam("q"),
@QueryParam("g"),
@QueryParam("a"),
@QueryParam("v"),
@QueryParam("p"),
@QueryParam("c"),
@QueryParam("cn"),
@QueryParam("sha1"),
@QueryParam("from"),
@QueryParam("count"),
@QueryParam("repositoryId")
},
output = SearchResponse.class)
public Object get(Context context, Request request, Response response, Variant variant)
throws ResourceException {
Form form = request.getResourceRef().getQueryAsForm();
final Map<String, String> terms = new HashMap<String, String>();
for (Parameter parameter : form) {
terms.put(parameter.getName(), parameter.getValue());
}
Integer from = null;
Boolean exact = null;
String repositoryId = null;
Boolean expandVersion = Boolean.FALSE;
Boolean collapseResults = Boolean.FALSE;
if (form.getFirstValue("from") != null) {
try {
from = Integer.valueOf(form.getFirstValue("from"));
} catch (NumberFormatException e) {
from = null;
}
}
int count = LUCENE_HIT_LIMIT;
if (form.getFirstValue("count") != null) {
try {
// capping the possible count
count = Math.min(LUCENE_HIT_LIMIT, Integer.valueOf(form.getFirstValue("count")));
} catch (NumberFormatException e) {
count = LUCENE_HIT_LIMIT;
}
}
if (form.getFirstValue("repositoryId") != null) {
repositoryId = form.getFirstValue("repositoryId");
}
if (form.getFirstValue("exact") != null) {
exact = Boolean.valueOf(form.getFirstValue("exact"));
}
if (form.getFirstValue("versionexpand") != null) {
expandVersion = Boolean.valueOf(form.getFirstValue("versionexpand"));
}
if (form.getFirstValue("collapseresults") != null) {
collapseResults = Boolean.valueOf(form.getFirstValue("collapseresults"));
}
// A little explanation about collapseResults, that might seems little bit awkward, since
// currently we have only
// one column "collapsable" (the version), but before and maybe in the future that's not the
// case. So, here is
// it:
// the "collapseResults" is just a flag "do we allow collapse at all". It is just a shorthand to
// turn on or off
// collapse generally
// Let's assume we have columns colA, colB and colC collapsable. So, instead saying
// expandColA=true,expandColB=true,expandColC=true,
// it is just easy to say collapseresults=false
// BUT, if collapseresults=true is sent by client, even then an "override" will happen if there
// is actually NO
// ROW to collapse!
// So: collapseresults=false EQUALS-TO expandColA=true & expandColB=true & expandColC=true
if (collapseResults) {
// here we would like to have ANDed all the collapsable column flags and negated the result
// currently we
collapseResults = !(true && expandVersion); // && expandColA && expandColB;
}
IteratorSearchResponse searchResult = null;
SearchNGResponse result = new SearchNGResponse();
int runCount = 0;
while (runCount < RETRIES) {
try {
List<ArtifactInfoFilter> filters = new ArrayList<ArtifactInfoFilter>();
// we need to save this reference to later
SystemWideLatestVersionCollector systemWideCollector =
new SystemWideLatestVersionCollector();
filters.add(systemWideCollector);
RepositoryWideLatestVersionCollector repositoryWideCollector = null;
if (collapseResults) {
repositoryWideCollector = new RepositoryWideLatestVersionCollector();
filters.add(repositoryWideCollector);
}
try {
searchResult =
searchByTerms(
terms,
repositoryId,
from,
count,
exact,
expandVersion,
collapseResults,
filters,
searchers);
if (searchResult == null) {
collapseResults = false;
continue;
} else {
repackIteratorSearchResponse(
request,
terms,
result,
collapseResults,
from,
count,
searchResult,
systemWideCollector,
repositoryWideCollector);
if (!result.isTooManyResults()) {
// if we had collapseResults ON, and the totalHits are larger than actual (filtered)
// results, and the actual result count is below COLLAPSE_OVERRIDE_TRESHOLD,
// and full result set is smaller than HIT_LIMIT
// then repeat without collapse
if (collapseResults
&& result.getData().size() < searchResult.getTotalHitsCount()
&& result.getData().size() < COLLAPSE_OVERRIDE_TRESHOLD
&& searchResult.getTotalHitsCount() < GA_HIT_LIMIT) {
collapseResults = false;
continue;
}
}
}
} catch (IOException e) {
throw new ResourceException(Status.SERVER_ERROR_INTERNAL, e.getMessage(), e);
}
// we came here, so we break the while-loop, we got what we need
break;
} catch (NoSuchRepositoryException e) {
throw new ResourceException(
Status.CLIENT_ERROR_BAD_REQUEST, "Repository to be searched does not exists!", e);
} catch (AlreadyClosedException e) {
runCount++;
getLogger()
.info(
"NexusIndexer issue (NEXUS-3702), we got AlreadyClosedException that happens when Reindexing or other \"indexer intensive\" task is running on instance while searching! Redoing search again.");
if (getLogger().isDebugEnabled()) {
// just keep it silent (DEBUG)
getLogger().debug("Got AlreadyClosedException exception!", e);
}
result.setData(null);
}
}
if (result.getData() == null) {
try {
repackIteratorSearchResponse(
request,
terms,
result,
collapseResults,
from,
count,
IteratorSearchResponse.empty(null),
null,
null);
} catch (NoSuchRepositoryException e) {
// will not happen
} catch (IOException e) {
// will not happen
}
getLogger()
.info(
"Nexus issue (NEXUS-3702): Was unable to perform search "
+ RETRIES
+ " times, giving up, and lying about TooManyResults. Please retry to reproduce this with DEBUG logs and report this issue!");
}
return result;
}
