Golang Request.Computations Examples

Golang Request.Computations - 2 examples found. These are the top rated real world Golang examples of net/http.Request.Computations extracted from open source projects. You can rate examples to help us improve the quality of examples.
Example #1
0
File: expr.go Project: mathpl/bosun
func Expr(t miniprofiler.Timer, w http.ResponseWriter, r *http.Request) (interface{}, error) {
	e, err := expr.New(r.FormValue("q"), schedule.Conf.Funcs())
	if err != nil {
		return nil, err
	}
	now, err := getTime(r)
	if err != nil {
		return nil, err
	}
	// it may not strictly be necessary to recreate the contexts each time, but we do to be safe
	tsdbContext := schedule.Conf.TSDBContext()
	graphiteContext := schedule.Conf.GraphiteContext()
	ls := schedule.Conf.LogstashElasticHosts
	res, queries, err := e.Execute(tsdbContext, graphiteContext, ls, cacheObj, t, now, 0, false, schedule.Search, nil, nil)
	if err != nil {
		return nil, err
	}
	for _, r := range res.Results {
		if r.Computations == nil {
			r.Computations = make(expr.Computations, 0)
		}
	}
	ret := struct {
		Type    string
		Results []*expr.Result
		Queries map[string]opentsdb.Request
	}{
		e.Tree.Root.Return().String(),
		res.Results,
		make(map[string]opentsdb.Request),
	}
	for _, q := range queries {
		if e, err := url.QueryUnescape(q.String()); err == nil {
			ret.Queries[e] = q
		}
	}
	return ret, nil
}
Example #2
0
func Expr(t miniprofiler.Timer, w http.ResponseWriter, r *http.Request) (v interface{}, err error) {
	defer func() {
		if pan := recover(); pan != nil {
			v = nil
			err = fmt.Errorf("%v", pan)
		}
	}()
	text, err := ioutil.ReadAll(r.Body)
	if err != nil {
		return nil, err
	}

	lines := strings.Split(strings.TrimSpace(string(text)), "\n")
	var expression string
	vars := map[string]string{}
	varRegex := regexp.MustCompile(`(\$\w+)\s*=(.*)`)
	for i, line := range lines {
		line = strings.TrimSpace(line)
		if line == "" {
			continue
		}
		// last line is expression we care about
		if i == len(lines)-1 {
			expression = schedule.Conf.Expand(line, vars, false)
		} else { // must be a variable declatation
			matches := varRegex.FindStringSubmatch(line)
			if len(matches) == 0 {
				return nil, fmt.Errorf("Expect all lines before final expression to be variable declarations of form `$foo = something`")
			}
			name := strings.TrimSpace(matches[1])
			value := strings.TrimSpace(matches[2])
			vars[name] = schedule.Conf.Expand(value, vars, false)
		}
	}
	e, err := expr.New(expression, schedule.Conf.Funcs())
	if err != nil {
		return nil, err
	}
	now, err := getTime(r)
	if err != nil {
		return nil, err
	}
	// it may not strictly be necessary to recreate the contexts each time, but we do to be safe
	tsdbContext := schedule.Conf.TSDBContext()
	graphiteContext := schedule.Conf.GraphiteContext()
	ls := schedule.Conf.LogstashElasticHosts
	influx := schedule.Conf.InfluxConfig
	es := schedule.Conf.ElasticHosts
	res, queries, err := e.Execute(tsdbContext, graphiteContext, ls, es, influx, cacheObj, t, now, 0, false, schedule.Search, nil, nil)
	if err != nil {
		return nil, err
	}
	for _, r := range res.Results {
		if r.Computations == nil {
			r.Computations = make(models.Computations, 0)
		}
	}
	ret := struct {
		Type    string
		Results []*expr.Result
		Queries map[string]opentsdb.Request
	}{
		e.Tree.Root.Return().String(),
		res.Results,
		make(map[string]opentsdb.Request),
	}
	for _, q := range queries {
		if e, err := url.QueryUnescape(q.String()); err == nil {
			ret.Queries[e] = q
		}
	}
	return ret, nil
}