Golang GlobResponse.GetMatches方法代碼示例

func findCompleter(globs pb.GlobResponse) ([]byte, error) {
	var b bytes.Buffer

	var complete = make([]completer, 0)

	for _, g := range globs.GetMatches() {
		c := completer{
			Path: g.GetPath(),
		}

		if g.GetIsLeaf() {
			c.IsLeaf = "1"
		} else {
			c.IsLeaf = "0"
		}

		i := strings.LastIndex(c.Path, ".")

		if i != -1 {
			c.Name = c.Path[i+1:]
		}

		complete = append(complete, c)
	}

	err := json.NewEncoder(&b).Encode(struct {
		Metrics []completer `json:"metrics"`
	}{
		Metrics: complete},
	)
	return b.Bytes(), err
}

func findList(globs pb.GlobResponse) ([]byte, error) {
	var b bytes.Buffer

	for _, g := range globs.GetMatches() {

		var dot string
		// make sure non-leaves end in one dot
		if !g.GetIsLeaf() && !strings.HasSuffix(g.GetPath(), ".") {
			dot = "."
		}

		fmt.Fprintln(&b, g.GetPath()+dot)
	}

	return b.Bytes(), nil
}

func findTreejson(globs pb.GlobResponse) ([]byte, error) {
	var b bytes.Buffer

	var tree = make([]treejson, 0)

	seen := make(map[string]struct{})

	basepath := globs.GetName()

	if i := strings.LastIndex(basepath, "."); i != -1 {
		basepath = basepath[:i+1]
	}

	for _, g := range globs.GetMatches() {

		name := g.GetPath()

		if i := strings.LastIndex(name, "."); i != -1 {
			name = name[i+1:]
		}

		if _, ok := seen[name]; ok {
			continue
		}
		seen[name] = struct{}{}

		t := treejson{
			ID:      basepath + name,
			Context: treejsonContext,
			Text:    name,
		}

		if g.GetIsLeaf() {
			t.Leaf = 1
		} else {
			t.AllowChildren = 1
			t.Expandable = 1
		}

		tree = append(tree, t)
	}

	err := json.NewEncoder(&b).Encode(tree)
	return b.Bytes(), err
}

//.........這裏部分代碼省略.........
			mfetch := m
			mfetch.from += from32
			mfetch.until += until32

			if _, ok := metricMap[mfetch]; ok {
				// already fetched this metric for this request
				continue
			}

			var glob pb.GlobResponse
			var haveCacheData bool

			if response, ok := findCache.get(m.metric); useCache && ok {
				Metrics.FindCacheHits.Add(1)
				err := proto.Unmarshal(response, &glob)
				haveCacheData = err == nil
			}

			if !haveCacheData {
				var err error
				Metrics.FindRequests.Add(1)
				stats.zipperRequests++
				glob, err = Zipper.Find(m.metric)
				if err != nil {
					log.Printf("Find: %v: %v", m.metric, err)
					continue
				}
				b, err := proto.Marshal(&glob)
				if err == nil {
					findCache.set(m.metric, b, 5*60)
				}
			}

			// For each metric returned in the Find response, query Render
			// This is a conscious decision to *not* cache render data
			rch := make(chan *metricData, len(glob.GetMatches()))
			leaves := 0
			for _, m := range glob.GetMatches() {
				if !m.GetIsLeaf() {
					continue
				}
				Metrics.RenderRequests.Add(1)
				leaves++
				Limiter.enter()
				stats.zipperRequests++
				go func(m *pb.GlobMatch, from, until int32) {
					var rptr *metricData
					r, err := Zipper.Render(m.GetPath(), from, until)
					if err == nil {
						rptr = &r
					} else {
						log.Printf("Render: %v: %v", m.GetPath(), err)
					}
					rch <- rptr
					Limiter.leave()
				}(m, mfetch.from, mfetch.until)
			}

			for i := 0; i < leaves; i++ {
				r := <-rch
				if r != nil {
					metricMap[mfetch] = append(metricMap[mfetch], r)
				}
			}
		}

		func() {
			defer func() {
				if r := recover(); r != nil {
					var buf [1024]byte
					runtime.Stack(buf[:], false)
					log.Printf("panic during eval: %s: %s\n%s\n", cacheKey, r, string(buf[:]))
				}
			}()
			exprs := evalExpr(exp, from32, until32, metricMap)
			results = append(results, exprs...)
		}()
	}

	var body []byte

	switch format {
	case "json":
		body = marshalJSON(results)
	case "protobuf":
		body = marshalProtobuf(results)
	case "raw":
		body = marshalRaw(results)
	case "pickle":
		body = marshalPickle(results)
	case "png":
		body = marshalPNG(r, results)
	}

	writeResponse(w, body, format, jsonp)

	if len(results) != 0 {
		queryCache.set(cacheKey, body, cacheTimeout)
	}
}