Refactor docs; Add 'ipng_source_tag', add udp listener for nginx-ipng-stats plugin

cmd/frontend/handler.go

@@ -58,6 +58,7 @@ type filterState struct {
 	URIReNeg     string // RE2 regex exclusion against request URI
 	IsTor        string // "", "1" (TOR only), "0" (non-TOR only)
 	ASN          string // expression: "12345", "!=65000", ">=1000", etc.
+	SourceTag    string // exact ipng_source_tag match
 }
 
 // QueryParams holds all parsed URL parameters for one page request.
@@ -95,7 +96,7 @@ var windowSpecs = []struct{ s, label string }{
 }
 
 var groupBySpecs = []struct{ s, label string }{
-	{"website", "website"}, {"asn", "asn"}, {"prefix", "prefix"}, {"status", "status"}, {"uri", "uri"},
+	{"website", "website"}, {"asn", "asn"}, {"prefix", "prefix"}, {"status", "status"}, {"uri", "uri"}, {"source_tag", "source"},
 }
 
 func parseWindowString(s string) (pb.Window, string) {
@@ -127,6 +128,8 @@ func parseGroupByString(s string) (pb.GroupBy, string) {
 		return pb.GroupBy_HTTP_RESPONSE, "status"
 	case "asn":
 		return pb.GroupBy_ASN_NUMBER, "asn"
+	case "source_tag":
+		return pb.GroupBy_SOURCE_TAG, "source_tag"
 	default:
 		return pb.GroupBy_WEBSITE, "website"
 	}
@@ -168,12 +171,13 @@ func (h *Handler) parseParams(r *http.Request) QueryParams {
 			URIReNeg:     q.Get("f_uri_re_neg"),
 			IsTor:        q.Get("f_is_tor"),
 			ASN:          q.Get("f_asn"),
+			SourceTag:    q.Get("f_source_tag"),
 		},
 	}
 }
 
 func buildFilter(f filterState) *pb.Filter {
-	if f.Website == "" && f.Prefix == "" && f.URI == "" && f.Status == "" && f.WebsiteRe == "" && f.URIRe == "" && f.WebsiteReNeg == "" && f.URIReNeg == "" && f.IsTor == "" && f.ASN == "" {
+	if f.Website == "" && f.Prefix == "" && f.URI == "" && f.Status == "" && f.WebsiteRe == "" && f.URIRe == "" && f.WebsiteReNeg == "" && f.URIReNeg == "" && f.IsTor == "" && f.ASN == "" && f.SourceTag == "" {
 		return nil
 	}
 	out := &pb.Filter{}
@@ -216,6 +220,9 @@ func buildFilter(f filterState) *pb.Filter {
 			out.AsnOp = op
 		}
 	}
+	if f.SourceTag != "" {
+		out.IpngSourceTag = &f.SourceTag
+	}
 	return out
 }
 
@@ -256,6 +263,9 @@ func (p QueryParams) toValues() url.Values {
 	if p.Filter.ASN != "" {
 		v.Set("f_asn", p.Filter.ASN)
 	}
+	if p.Filter.SourceTag != "" {
+		v.Set("f_source_tag", p.Filter.SourceTag)
+	}
 	return v
 }
 
@@ -278,7 +288,7 @@ func (p QueryParams) clearFilterURL() string {
 	return p.buildURL(map[string]string{
 		"f_website": "", "f_prefix": "", "f_uri": "", "f_status": "",
 		"f_website_re": "", "f_uri_re": "", "f_website_re_neg": "", "f_uri_re_neg": "",
-		"f_is_tor": "", "f_asn": "",
+		"f_is_tor": "", "f_asn": "", "f_source_tag": "",
 	})
 }
 
@@ -293,7 +303,9 @@ func nextGroupBy(s string) string {
 		return "status"
 	case "status":
 		return "asn"
-	default: // asn → back to website
+	case "asn":
+		return "source_tag"
+	default: // source_tag → back to website
 		return "website"
 	}
 }
@@ -311,6 +323,8 @@ func groupByFilterKey(s string) string {
 		return "f_status"
 	case "asn":
 		return "f_asn"
+	case "source_tag":
+		return "f_source_tag"
 	default:
 		return "f_website"
 	}
@@ -391,6 +405,12 @@ func buildCrumbs(p QueryParams) []Crumb {
 			RemoveURL: p.buildURL(map[string]string{"f_asn": ""}),
 		})
 	}
+	if p.Filter.SourceTag != "" {
+		crumbs = append(crumbs, Crumb{
+			Text:      "source_tag=" + p.Filter.SourceTag,
+			RemoveURL: p.buildURL(map[string]string{"f_source_tag": ""}),
+		})
+	}
 	return crumbs
 }