106 lines
3.3 KiB
Go
106 lines
3.3 KiB
Go
// Licensed to Elasticsearch B.V. under one or more contributor
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// license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright
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// ownership. Elasticsearch B.V. licenses this file to you under
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// the Apache License, Version 2.0 (the "License"); you may
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// 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,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package kibana
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import (
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"encoding/json"
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"fmt"
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"net/url"
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"strings"
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"github.com/elastic/beats/libbeat/common"
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"github.com/elastic/beats/metricbeat/helper"
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"github.com/elastic/beats/metricbeat/helper/elastic"
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"github.com/elastic/beats/metricbeat/mb"
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)
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const (
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// ModuleName is the name of this module
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ModuleName = "kibana"
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// StatsAPIAvailableVersion is the version of Kibana since when the stats API is available
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StatsAPIAvailableVersion = "6.4.0"
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// SettingsAPIAvailableVersion is the version of Kibana since when the settings API is available
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SettingsAPIAvailableVersion = "6.5.0"
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)
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// ReportErrorForMissingField reports and returns an error message for the given
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// field being missing in API response received from Kibana
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func ReportErrorForMissingField(field string, r mb.ReporterV2) error {
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err := fmt.Errorf("Could not find field '%v' in Kibana stats API response", field)
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r.Error(err)
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return err
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}
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// GetVersion returns the version of the Kibana instance
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func GetVersion(http *helper.HTTP, currentPath string) (string, error) {
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const statusPath = "api/status"
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content, err := fetchPath(http, currentPath, statusPath)
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if err != nil {
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return "", err
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}
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var data common.MapStr
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err = json.Unmarshal(content, &data)
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if err != nil {
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return "", err
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}
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version, err := data.GetValue("version.number")
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if err != nil {
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return "", err
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}
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versionStr, ok := version.(string)
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if !ok {
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return "", fmt.Errorf("Could not parse Kibana version in status API response")
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}
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return versionStr, nil
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}
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// IsStatsAPIAvailable returns whether the stats API is available in the given version of Kibana
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func IsStatsAPIAvailable(currentKibanaVersion string) (bool, error) {
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return elastic.IsFeatureAvailable(currentKibanaVersion, StatsAPIAvailableVersion)
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}
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// IsSettingsAPIAvailable returns whether the settings API is available in the given version of Kibana
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func IsSettingsAPIAvailable(currentKibanaVersion string) (bool, error) {
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return elastic.IsFeatureAvailable(currentKibanaVersion, SettingsAPIAvailableVersion)
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}
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func fetchPath(http *helper.HTTP, currentPath, newPath string) ([]byte, error) {
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currentURI := http.GetURI()
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defer http.SetURI(currentURI) // Reset after this request
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// Parse the URI to replace the path
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u, err := url.Parse(currentURI)
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if err != nil {
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return nil, err
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}
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u.Path = strings.Replace(u.Path, currentPath, newPath, 1) // HACK: to account for base paths
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u.RawQuery = ""
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// Http helper includes the HostData with username and password
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http.SetURI(u.String())
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return http.FetchContent()
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}
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