mirror of
https://github.com/grafana/grafana.git
synced 2024-11-26 02:40:26 -06:00
544 lines
18 KiB
Go
544 lines
18 KiB
Go
package api
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import (
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"bytes"
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"net/http"
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"path"
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"path/filepath"
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"runtime"
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"sort"
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"strings"
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"github.com/grafana/grafana-plugin-sdk-go/backend"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promauto"
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"github.com/grafana/grafana/pkg/api/dtos"
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"github.com/grafana/grafana/pkg/api/response"
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"github.com/grafana/grafana/pkg/plugins"
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"github.com/grafana/grafana/pkg/plugins/backendplugin"
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"github.com/grafana/grafana/pkg/plugins/repo"
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ac "github.com/grafana/grafana/pkg/services/accesscontrol"
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contextmodel "github.com/grafana/grafana/pkg/services/contexthandler/model"
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"github.com/grafana/grafana/pkg/services/datasources"
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"github.com/grafana/grafana/pkg/services/org"
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"github.com/grafana/grafana/pkg/services/pluginsintegration/pluginaccesscontrol"
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"github.com/grafana/grafana/pkg/services/pluginsintegration/plugincontext"
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"github.com/grafana/grafana/pkg/services/pluginsintegration/pluginsettings"
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"github.com/grafana/grafana/pkg/setting"
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"github.com/grafana/grafana/pkg/util"
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"github.com/grafana/grafana/pkg/web"
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)
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// pluginsCDNFallbackRedirectRequests is a metric counter keeping track of how many
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// requests are received on the plugins CDN backend redirect fallback handler.
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var pluginsCDNFallbackRedirectRequests = promauto.NewCounterVec(prometheus.CounterOpts{
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Namespace: "grafana",
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Name: "plugins_cdn_fallback_redirect_requests_total",
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Help: "Number of requests to the plugins CDN backend redirect fallback handler.",
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}, []string{"plugin_id", "plugin_version"})
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var ErrUnexpectedFileExtension = errors.New("unexpected file extension")
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func (hs *HTTPServer) GetPluginList(c *contextmodel.ReqContext) response.Response {
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typeFilter := c.Query("type")
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enabledFilter := c.Query("enabled")
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embeddedFilter := c.Query("embedded")
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// "" => no filter
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// "0" => filter out core plugins
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// "1" => filter out non-core plugins
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coreFilter := c.Query("core")
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// FIXME: while we don't have permissions for listing plugins we need this complex check:
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// When using access control, should be able to list non-core plugins:
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// * anyone that can create a data source
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// * anyone that can install a plugin
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// Fallback to only letting admins list non-core plugins
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reqOrgAdmin := ac.ReqHasRole(org.RoleAdmin)
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hasAccess := ac.HasAccess(hs.AccessControl, c)
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canListNonCorePlugins := reqOrgAdmin(c) || hasAccess(ac.EvalAny(
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ac.EvalPermission(datasources.ActionCreate),
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ac.EvalPermission(pluginaccesscontrol.ActionInstall),
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))
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pluginSettingsMap, err := hs.pluginSettings(c.Req.Context(), c.OrgID)
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if err != nil {
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return response.Error(http.StatusInternalServerError, "Failed to get list of plugins", err)
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}
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// Filter plugins
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pluginDefinitions := hs.pluginStore.Plugins(c.Req.Context())
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filteredPluginDefinitions := []plugins.PluginDTO{}
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filteredPluginIDs := map[string]bool{}
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for _, pluginDef := range pluginDefinitions {
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// filter out app sub plugins
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if embeddedFilter == "0" && pluginDef.IncludedInAppID != "" {
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continue
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}
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// filter out core plugins
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if (coreFilter == "0" && pluginDef.IsCorePlugin()) || (coreFilter == "1" && !pluginDef.IsCorePlugin()) {
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continue
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}
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// FIXME: while we don't have permissions for listing plugins we need this complex check:
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// When using access control, should be able to list non-core plugins:
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// * anyone that can create a data source
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// * anyone that can install a plugin
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// Should be able to list this installed plugin:
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// * anyone that can edit its settings
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if !pluginDef.IsCorePlugin() && !canListNonCorePlugins && !hasAccess(ac.EvalPermission(pluginaccesscontrol.ActionWrite, pluginaccesscontrol.ScopeProvider.GetResourceScope(pluginDef.ID))) {
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continue
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}
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// filter on type
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if typeFilter != "" && typeFilter != string(pluginDef.Type) {
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continue
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}
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if pluginDef.State == plugins.ReleaseStateAlpha && !hs.Cfg.PluginsEnableAlpha {
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continue
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}
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// filter out built in plugins
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if pluginDef.BuiltIn {
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continue
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}
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// filter out disabled plugins
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if pluginSetting, exists := pluginSettingsMap[pluginDef.ID]; exists {
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if enabledFilter == "1" && !pluginSetting.Enabled {
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continue
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}
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}
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filteredPluginDefinitions = append(filteredPluginDefinitions, pluginDef)
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filteredPluginIDs[pluginDef.ID] = true
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}
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// Compute metadata
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pluginsMetadata := hs.getMultiAccessControlMetadata(c, pluginaccesscontrol.ScopeProvider.GetResourceScope(""), filteredPluginIDs)
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// Prepare DTO
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result := make(dtos.PluginList, 0)
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for _, pluginDef := range filteredPluginDefinitions {
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listItem := dtos.PluginListItem{
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Id: pluginDef.ID,
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Name: pluginDef.Name,
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Type: string(pluginDef.Type),
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Category: pluginDef.Category,
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Info: pluginDef.Info,
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Dependencies: pluginDef.Dependencies,
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DefaultNavUrl: path.Join(hs.Cfg.AppSubURL, pluginDef.DefaultNavURL),
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State: pluginDef.State,
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Signature: pluginDef.Signature,
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SignatureType: pluginDef.SignatureType,
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SignatureOrg: pluginDef.SignatureOrg,
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AccessControl: pluginsMetadata[pluginDef.ID],
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AngularDetected: pluginDef.AngularDetected,
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}
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update, exists := hs.pluginsUpdateChecker.HasUpdate(c.Req.Context(), pluginDef.ID)
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if exists {
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listItem.LatestVersion = update
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listItem.HasUpdate = true
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}
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if pluginSetting, exists := pluginSettingsMap[pluginDef.ID]; exists {
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listItem.Enabled = pluginSetting.Enabled
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listItem.Pinned = pluginSetting.Pinned
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}
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if listItem.DefaultNavUrl == "" || !listItem.Enabled {
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listItem.DefaultNavUrl = hs.Cfg.AppSubURL + "/plugins/" + listItem.Id + "/"
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}
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result = append(result, listItem)
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}
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sort.Sort(result)
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return response.JSON(http.StatusOK, result)
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}
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func (hs *HTTPServer) GetPluginSettingByID(c *contextmodel.ReqContext) response.Response {
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pluginID := web.Params(c.Req)[":pluginId"]
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plugin, exists := hs.pluginStore.Plugin(c.Req.Context(), pluginID)
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if !exists {
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return response.Error(http.StatusNotFound, "Plugin not found, no installed plugin with that id", nil)
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}
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// In a first iteration, we only have one permission for app plugins.
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// We will need a different permission to allow users to configure the plugin without needing access to it.
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if plugin.IsApp() {
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hasAccess := ac.HasAccess(hs.AccessControl, c)
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if !hasAccess(ac.EvalPermission(pluginaccesscontrol.ActionAppAccess, pluginaccesscontrol.ScopeProvider.GetResourceScope(plugin.ID))) {
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return response.Error(http.StatusForbidden, "Access Denied", nil)
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}
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}
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dto := &dtos.PluginSetting{
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Type: string(plugin.Type),
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Id: plugin.ID,
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Name: plugin.Name,
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Info: plugin.Info,
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Dependencies: plugin.Dependencies,
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Includes: plugin.Includes,
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BaseUrl: plugin.BaseURL,
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Module: plugin.Module,
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DefaultNavUrl: path.Join(hs.Cfg.AppSubURL, plugin.DefaultNavURL),
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State: plugin.State,
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Signature: plugin.Signature,
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SignatureType: plugin.SignatureType,
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SignatureOrg: plugin.SignatureOrg,
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SecureJsonFields: map[string]bool{},
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AngularDetected: plugin.AngularDetected,
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}
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if plugin.IsApp() {
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dto.Enabled = plugin.AutoEnabled
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dto.Pinned = plugin.AutoEnabled
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}
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ps, err := hs.PluginSettings.GetPluginSettingByPluginID(c.Req.Context(), &pluginsettings.GetByPluginIDArgs{
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PluginID: pluginID,
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OrgID: c.OrgID,
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})
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if err != nil {
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if !errors.Is(err, pluginsettings.ErrPluginSettingNotFound) {
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return response.Error(http.StatusInternalServerError, "Failed to get plugin settings", nil)
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}
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} else {
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dto.Enabled = ps.Enabled
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dto.Pinned = ps.Pinned
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dto.JsonData = ps.JSONData
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for k, v := range hs.PluginSettings.DecryptedValues(ps) {
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if len(v) > 0 {
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dto.SecureJsonFields[k] = true
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}
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}
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}
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update, exists := hs.pluginsUpdateChecker.HasUpdate(c.Req.Context(), plugin.ID)
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if exists {
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dto.LatestVersion = update
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dto.HasUpdate = true
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}
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return response.JSON(http.StatusOK, dto)
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}
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func (hs *HTTPServer) UpdatePluginSetting(c *contextmodel.ReqContext) response.Response {
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cmd := pluginsettings.UpdatePluginSettingCmd{}
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if err := web.Bind(c.Req, &cmd); err != nil {
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return response.Error(http.StatusBadRequest, "bad request data", err)
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}
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pluginID := web.Params(c.Req)[":pluginId"]
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if _, exists := hs.pluginStore.Plugin(c.Req.Context(), pluginID); !exists {
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return response.Error(404, "Plugin not installed", nil)
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}
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cmd.OrgId = c.OrgID
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cmd.PluginId = pluginID
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if err := hs.PluginSettings.UpdatePluginSetting(c.Req.Context(), &pluginsettings.UpdateArgs{
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Enabled: cmd.Enabled,
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Pinned: cmd.Pinned,
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JSONData: cmd.JsonData,
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SecureJSONData: cmd.SecureJsonData,
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PluginVersion: cmd.PluginVersion,
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PluginID: cmd.PluginId,
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OrgID: cmd.OrgId,
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EncryptedSecureJSONData: cmd.EncryptedSecureJsonData,
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}); err != nil {
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return response.Error(500, "Failed to update plugin setting", err)
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}
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hs.pluginContextProvider.InvalidateSettingsCache(c.Req.Context(), pluginID)
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return response.Success("Plugin settings updated")
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}
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func (hs *HTTPServer) GetPluginMarkdown(c *contextmodel.ReqContext) response.Response {
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pluginID := web.Params(c.Req)[":pluginId"]
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name := web.Params(c.Req)[":name"]
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content, err := hs.pluginMarkdown(c.Req.Context(), pluginID, name)
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if err != nil {
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var notFound plugins.NotFoundError
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if errors.As(err, ¬Found) {
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return response.Error(http.StatusNotFound, notFound.Error(), nil)
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}
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return response.Error(http.StatusInternalServerError, "Could not get markdown file", err)
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}
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// fallback try readme
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if len(content) == 0 {
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content, err = hs.pluginMarkdown(c.Req.Context(), pluginID, "readme")
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if err != nil {
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if errors.Is(err, plugins.ErrFileNotExist) {
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return response.Error(http.StatusNotFound, plugins.ErrFileNotExist.Error(), nil)
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}
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return response.Error(http.StatusNotImplemented, "Could not get markdown file", err)
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}
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}
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resp := response.Respond(http.StatusOK, content)
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resp.SetHeader("Content-Type", "text/plain; charset=utf-8")
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return resp
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}
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// CollectPluginMetrics collect metrics from a plugin.
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//
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// /api/plugins/:pluginId/metrics
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func (hs *HTTPServer) CollectPluginMetrics(c *contextmodel.ReqContext) response.Response {
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pluginID := web.Params(c.Req)[":pluginId"]
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resp, err := hs.pluginClient.CollectMetrics(c.Req.Context(), &backend.CollectMetricsRequest{PluginContext: backend.PluginContext{PluginID: pluginID}})
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if err != nil {
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return translatePluginRequestErrorToAPIError(err)
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}
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headers := make(http.Header)
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headers.Set("Content-Type", "text/plain")
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return response.CreateNormalResponse(headers, resp.PrometheusMetrics, http.StatusOK)
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}
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// getPluginAssets returns public plugin assets (images, JS, etc.)
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//
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// If the plugin has cdn = false in its config (default), it will always attempt to return the asset
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// from the local filesystem.
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//
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// If the plugin has cdn = true and hs.Cfg.PluginsCDNURLTemplate is empty, it will get the file
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// from the local filesystem. If hs.Cfg.PluginsCDNURLTemplate is not empty,
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// this handler returns a redirect to the plugin asset file on the specified CDN.
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//
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// /public/plugins/:pluginId/*
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func (hs *HTTPServer) getPluginAssets(c *contextmodel.ReqContext) {
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pluginID := web.Params(c.Req)[":pluginId"]
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plugin, exists := hs.pluginStore.Plugin(c.Req.Context(), pluginID)
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if !exists {
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c.JsonApiErr(404, "Plugin not found", nil)
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return
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}
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// prepend slash for cleaning relative paths
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requestedFile, err := util.CleanRelativePath(web.Params(c.Req)["*"])
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if err != nil {
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// slash is prepended above therefore this is not expected to fail
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c.JsonApiErr(500, "Failed to clean relative file path", err)
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return
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}
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if hs.pluginsCDNService.PluginSupported(pluginID) {
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// Send a redirect to the client
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hs.redirectCDNPluginAsset(c, plugin, requestedFile)
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return
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}
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// Send the actual file to the client from local filesystem
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hs.serveLocalPluginAsset(c, plugin, requestedFile)
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}
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// serveLocalPluginAsset returns the content of a plugin asset file from the local filesystem to the http client.
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func (hs *HTTPServer) serveLocalPluginAsset(c *contextmodel.ReqContext, plugin plugins.PluginDTO, assetPath string) {
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f, err := hs.pluginFileStore.File(c.Req.Context(), plugin.ID, assetPath)
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if err != nil {
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if errors.Is(err, plugins.ErrFileNotExist) {
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c.JsonApiErr(404, "Plugin file not found", nil)
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return
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}
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c.JsonApiErr(500, "Could not open plugin file", err)
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return
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}
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if hs.Cfg.Env == setting.Dev {
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c.Resp.Header().Set("Cache-Control", "max-age=0, must-revalidate, no-cache")
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} else {
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c.Resp.Header().Set("Cache-Control", "public, max-age=3600")
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}
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http.ServeContent(c.Resp, c.Req, assetPath, f.ModTime, bytes.NewReader(f.Content))
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}
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// redirectCDNPluginAsset redirects the http request to specified asset path on the configured plugins CDN.
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func (hs *HTTPServer) redirectCDNPluginAsset(c *contextmodel.ReqContext, plugin plugins.PluginDTO, assetPath string) {
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remoteURL, err := hs.pluginsCDNService.AssetURL(plugin.ID, plugin.Info.Version, assetPath)
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if err != nil {
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c.JsonApiErr(500, "Failed to get CDN plugin asset remote URL", err)
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return
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}
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hs.log.Warn(
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"plugin cdn redirect hit",
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"pluginID", plugin.ID,
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"pluginVersion", plugin.Info.Version,
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"assetPath", assetPath,
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"remoteURL", remoteURL,
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)
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pluginsCDNFallbackRedirectRequests.With(prometheus.Labels{
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"plugin_id": plugin.ID,
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"plugin_version": plugin.Info.Version,
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}).Inc()
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http.Redirect(c.Resp, c.Req, remoteURL, http.StatusTemporaryRedirect)
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}
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// CheckHealth returns the health of a plugin.
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// /api/plugins/:pluginId/health
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func (hs *HTTPServer) CheckHealth(c *contextmodel.ReqContext) response.Response {
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pluginID := web.Params(c.Req)[":pluginId"]
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pCtx, err := hs.pluginContextProvider.Get(c.Req.Context(), pluginID, c.SignedInUser, c.OrgID)
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if err != nil {
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if errors.Is(err, plugincontext.ErrPluginNotFound) {
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return response.Error(404, "Plugin not found", nil)
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}
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return response.Error(500, "Failed to get plugin settings", err)
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}
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resp, err := hs.pluginClient.CheckHealth(c.Req.Context(), &backend.CheckHealthRequest{
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PluginContext: pCtx,
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Headers: map[string]string{},
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})
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if err != nil {
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return translatePluginRequestErrorToAPIError(err)
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}
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payload := map[string]any{
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"status": resp.Status.String(),
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"message": resp.Message,
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}
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// Unmarshal JSONDetails if it's not empty.
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if len(resp.JSONDetails) > 0 {
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var jsonDetails map[string]any
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err = json.Unmarshal(resp.JSONDetails, &jsonDetails)
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if err != nil {
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return response.Error(500, "Failed to unmarshal detailed response from backend plugin", err)
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}
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payload["details"] = jsonDetails
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}
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if resp.Status != backend.HealthStatusOk {
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return response.JSON(503, payload)
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}
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return response.JSON(http.StatusOK, payload)
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}
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func (hs *HTTPServer) GetPluginErrorsList(c *contextmodel.ReqContext) response.Response {
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return response.JSON(http.StatusOK, hs.pluginErrorResolver.PluginErrors(c.Req.Context()))
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}
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func (hs *HTTPServer) InstallPlugin(c *contextmodel.ReqContext) response.Response {
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dto := dtos.InstallPluginCommand{}
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if err := web.Bind(c.Req, &dto); err != nil {
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return response.Error(http.StatusBadRequest, "bad request data", err)
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}
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pluginID := web.Params(c.Req)[":pluginId"]
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compatOpts := plugins.NewCompatOpts(hs.Cfg.BuildVersion, runtime.GOOS, runtime.GOARCH)
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err := hs.pluginInstaller.Add(c.Req.Context(), pluginID, dto.Version, compatOpts)
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if err != nil {
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var dupeErr plugins.DuplicateError
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if errors.As(err, &dupeErr) {
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return response.Error(http.StatusConflict, "Plugin already installed", err)
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}
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var versionUnsupportedErr repo.ErrVersionUnsupported
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if errors.As(err, &versionUnsupportedErr) {
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return response.Error(http.StatusConflict, "Plugin version not supported", err)
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}
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var versionNotFoundErr repo.ErrVersionNotFound
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if errors.As(err, &versionNotFoundErr) {
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return response.Error(http.StatusNotFound, "Plugin version not found", err)
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}
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var clientError repo.ErrResponse4xx
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if errors.As(err, &clientError) {
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return response.Error(clientError.StatusCode(), clientError.Message(), err)
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}
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if errors.Is(err, plugins.ErrInstallCorePlugin) {
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return response.Error(http.StatusForbidden, "Cannot install or change a Core plugin", err)
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}
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var archError repo.ErrArcNotFound
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if errors.As(err, &archError) {
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return response.Error(http.StatusNotFound, archError.Error(), nil)
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}
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return response.Error(http.StatusInternalServerError, "Failed to install plugin", err)
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}
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return response.JSON(http.StatusOK, []byte{})
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}
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func (hs *HTTPServer) UninstallPlugin(c *contextmodel.ReqContext) response.Response {
|
|
pluginID := web.Params(c.Req)[":pluginId"]
|
|
|
|
err := hs.pluginInstaller.Remove(c.Req.Context(), pluginID)
|
|
if err != nil {
|
|
if errors.Is(err, plugins.ErrPluginNotInstalled) {
|
|
return response.Error(http.StatusNotFound, "Plugin not installed", err)
|
|
}
|
|
if errors.Is(err, plugins.ErrUninstallCorePlugin) {
|
|
return response.Error(http.StatusForbidden, "Cannot uninstall a Core plugin", err)
|
|
}
|
|
return response.Error(http.StatusInternalServerError, "Failed to uninstall plugin", err)
|
|
}
|
|
return response.JSON(http.StatusOK, []byte{})
|
|
}
|
|
|
|
func translatePluginRequestErrorToAPIError(err error) response.Response {
|
|
if errors.Is(err, backendplugin.ErrPluginNotRegistered) {
|
|
return response.Error(404, "Plugin not found", err)
|
|
}
|
|
|
|
if errors.Is(err, backendplugin.ErrMethodNotImplemented) {
|
|
return response.Error(404, "Not found", err)
|
|
}
|
|
|
|
if errors.Is(err, backendplugin.ErrHealthCheckFailed) {
|
|
return response.Error(500, "Plugin health check failed", err)
|
|
}
|
|
|
|
if errors.Is(err, backendplugin.ErrPluginUnavailable) {
|
|
return response.Error(503, "Plugin unavailable", err)
|
|
}
|
|
|
|
return response.Error(500, "Plugin request failed", err)
|
|
}
|
|
|
|
func (hs *HTTPServer) pluginMarkdown(ctx context.Context, pluginID string, name string) ([]byte, error) {
|
|
file, err := mdFilepath(strings.ToUpper(name))
|
|
if err != nil {
|
|
return make([]byte, 0), err
|
|
}
|
|
|
|
md, err := hs.pluginFileStore.File(ctx, pluginID, file)
|
|
if err != nil {
|
|
if errors.Is(err, plugins.ErrPluginNotInstalled) {
|
|
return make([]byte, 0), plugins.NotFoundError{PluginID: pluginID}
|
|
}
|
|
|
|
md, err = hs.pluginFileStore.File(ctx, pluginID, strings.ToLower(file))
|
|
if err != nil {
|
|
return make([]byte, 0), nil
|
|
}
|
|
}
|
|
return md.Content, nil
|
|
}
|
|
|
|
func mdFilepath(mdFilename string) (string, error) {
|
|
fileExt := filepath.Ext(mdFilename)
|
|
switch fileExt {
|
|
case "md":
|
|
return util.CleanRelativePath(mdFilename)
|
|
case "":
|
|
return util.CleanRelativePath(fmt.Sprintf("%s.md", mdFilename))
|
|
default:
|
|
return "", ErrUnexpectedFileExtension
|
|
}
|
|
}
|