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81 lines
2.4 KiB
81 lines
2.4 KiB
// Copyright 2014 Prometheus Team |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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package web |
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import ( |
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"flag" |
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"io" |
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"io/ioutil" |
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"net/http" |
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"net/url" |
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"path/filepath" |
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clientmodel "github.com/prometheus/client_golang/model" |
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"github.com/prometheus/prometheus/storage/metric" |
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"github.com/prometheus/prometheus/templates" |
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) |
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var ( |
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consoleTemplatesPath = flag.String("consoleTemplates", "consoles", "Path to console template directory, available at /console") |
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consoleLibrariesPath = flag.String("consoleLibraries", "console_libraries", "Path to console library directory") |
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) |
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type ConsolesHandler struct { |
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Storage metric.PreloadingPersistence |
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} |
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func (h *ConsolesHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) { |
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file, err := http.Dir(*consoleTemplatesPath).Open(r.URL.Path) |
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if err != nil { |
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http.Error(w, err.Error(), http.StatusNotFound) |
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return |
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} |
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text, err := ioutil.ReadAll(file) |
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if err != nil { |
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http.Error(w, err.Error(), http.StatusInternalServerError) |
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return |
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} |
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// Provide URL parameters as a map for easy use. Advanced users may have need for |
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// parameters beyond the first, so provide RawParams. |
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rawParams, err := url.ParseQuery(r.URL.RawQuery) |
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if err != nil { |
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http.Error(w, err.Error(), http.StatusBadRequest) |
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return |
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} |
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params := map[string]string{} |
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for k, v := range rawParams { |
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params[k] = v[0] |
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} |
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data := struct { |
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RawParams url.Values |
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Params map[string]string |
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}{ |
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RawParams: rawParams, |
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Params: params, |
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} |
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template := templates.NewTemplateExpander(string(text), "__console_"+r.URL.Path, data, clientmodel.Now(), h.Storage) |
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filenames, err := filepath.Glob(*consoleLibrariesPath + "/*.lib") |
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if err != nil { |
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http.Error(w, err.Error(), http.StatusInternalServerError) |
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return |
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} |
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result, err := template.ExpandHTML(filenames) |
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if err != nil { |
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http.Error(w, err.Error(), http.StatusInternalServerError) |
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return |
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} |
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io.WriteString(w, result) |
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}
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