func (server *Server) serveOriginList(writer http.ResponseWriter, request *http.Request) {
var offset, limit int
if response, status := server.parseListRequest(writer, request, &offset, &limit); status != http.StatusOK {
server.serveResponse(writer, response, status)
return
}
originSet := set.New(set.ThreadSafe)
for _, origin := range server.Catalog.Origins {
if request.FormValue("filter") != "" && !utils.FilterMatch(request.FormValue("filter"), origin.Name) {
continue
}
originSet.Add(origin.Name)
}
response := &listResponse{
list: StringListResponse(set.StringSlice(originSet)),
offset: offset,
limit: limit,
}
server.applyResponseLimit(writer, request, response)
server.serveResponse(writer, response.list, http.StatusOK)
}
func (server *Server) serveSource(writer http.ResponseWriter, request *http.Request) {
sourceName := strings.TrimPrefix(request.URL.Path, urlCatalogPath+"sources/")
if sourceName == "" {
server.serveSourceList(writer, request)
return
} else if response, status := server.parseShowRequest(writer, request); status != http.StatusOK {
server.serveResponse(writer, response, status)
return
}
originSet := set.New(set.ThreadSafe)
for _, origin := range server.Catalog.Origins {
if _, ok := origin.Sources[sourceName]; ok {
originSet.Add(origin.Name)
}
}
if originSet.Size() == 0 {
server.serveResponse(writer, serverResponse{mesgResourceNotFound}, http.StatusNotFound)
return
}
origins := set.StringSlice(originSet)
sort.Strings(origins)
response := SourceResponse{
Name: sourceName,
Origins: origins,
}
server.serveResponse(writer, response, http.StatusOK)
}
func (server *Server) serveMetricList(writer http.ResponseWriter, request *http.Request) {
var offset, limit int
if response, status := server.parseListRequest(writer, request, &offset, &limit); status != http.StatusOK {
server.serveResponse(writer, response, status)
return
}
originName := request.FormValue("origin")
sourceName := request.FormValue("source")
sourceSet := set.New(set.ThreadSafe)
if strings.HasPrefix(sourceName, library.LibraryGroupPrefix) {
for _, entryName := range server.Library.ExpandGroup(
strings.TrimPrefix(sourceName, library.LibraryGroupPrefix),
library.LibraryItemSourceGroup,
) {
sourceSet.Add(entryName)
}
} else if sourceName != "" {
sourceSet.Add(sourceName)
}
metricSet := set.New(set.ThreadSafe)
for _, origin := range server.Catalog.Origins {
if originName != "" && origin.Name != originName {
continue
}
for _, source := range origin.Sources {
if sourceName != "" && sourceSet.IsEmpty() || !sourceSet.IsEmpty() && !sourceSet.Has(source.Name) {
continue
}
for key := range source.Metrics {
if request.FormValue("filter") != "" && !utils.FilterMatch(request.FormValue("filter"), key) {
continue
}
metricSet.Add(key)
}
}
}
response := &listResponse{
list: StringListResponse(set.StringSlice(metricSet)),
offset: offset,
limit: limit,
}
server.applyResponseLimit(writer, request, response)
server.serveResponse(writer, response.list, http.StatusOK)
}
// ExpandGroup expands a group returning a list of matching items.
func (library *Library) ExpandGroup(name string, groupType int) []string {
item, err := library.GetItemByName(name, groupType)
if err != nil {
logger.Log(logger.LevelError, "library", "unknown item `%s': %s", name, err)
return make([]string, 0)
}
group := item.(*Group)
itemSet := set.New(set.ThreadSafe)
for _, entry := range group.Entries {
var re *regexp.Regexp
if strings.HasPrefix(entry.Pattern, LibraryMatchPrefixRegexp) {
re = regexp.MustCompile(strings.TrimPrefix(entry.Pattern, LibraryMatchPrefixRegexp))
}
if _, ok := library.Catalog.Origins[entry.Origin]; !ok {
logger.Log(logger.LevelError, "library", "unknown group entry `%s'", entry.Origin)
continue
}
if groupType == LibraryItemSourceGroup {
for _, source := range library.Catalog.Origins[entry.Origin].Sources {
if strings.HasPrefix(entry.Pattern, LibraryMatchPrefixGlob) {
if ok, _ := path.Match(strings.TrimPrefix(entry.Pattern, LibraryMatchPrefixGlob),
source.Name); !ok {
continue
}
} else if strings.HasPrefix(entry.Pattern, LibraryMatchPrefixRegexp) {
if !re.MatchString(source.Name) {
continue
}
} else if entry.Pattern != source.Name {
continue
}
itemSet.Add(source.Name)
}
} else if groupType == LibraryItemMetricGroup {
for _, source := range library.Catalog.Origins[entry.Origin].Sources {
for _, metric := range source.Metrics {
if strings.HasPrefix(entry.Pattern, LibraryMatchPrefixGlob) {
if ok, _ := path.Match(strings.TrimPrefix(entry.Pattern, LibraryMatchPrefixGlob),
metric.Name); !ok {
continue
}
} else if strings.HasPrefix(entry.Pattern, LibraryMatchPrefixRegexp) {
if !re.MatchString(metric.Name) {
continue
}
} else if entry.Pattern != metric.Name {
continue
}
itemSet.Add(metric.Name)
}
}
}
}
result := set.StringSlice(itemSet)
sort.Strings(result)
return result
}