add get events handler to agent integration

api/server/handlers/cluster/get_events.go

@@ -0,0 +1,64 @@
+package cluster
+
+import (
+	"net/http"
+
+	"github.com/porter-dev/porter/api/server/authz"
+	"github.com/porter-dev/porter/api/server/handlers"
+	"github.com/porter-dev/porter/api/server/shared"
+	"github.com/porter-dev/porter/api/server/shared/apierrors"
+	"github.com/porter-dev/porter/api/server/shared/config"
+	"github.com/porter-dev/porter/api/types"
+	porter_agent "github.com/porter-dev/porter/internal/kubernetes/porter_agent/v2"
+	"github.com/porter-dev/porter/internal/models"
+)
+
+type GetEventsHandler struct {
+	handlers.PorterHandlerReadWriter
+	authz.KubernetesAgentGetter
+}
+
+func NewGetEventsHandler(
+	config *config.Config,
+	decoderValidator shared.RequestDecoderValidator,
+	writer shared.ResultWriter,
+) *GetEventsHandler {
+	return &GetEventsHandler{
+		PorterHandlerReadWriter: handlers.NewDefaultPorterHandler(config, decoderValidator, writer),
+		KubernetesAgentGetter:   authz.NewOutOfClusterAgentGetter(config),
+	}
+}
+
+func (c *GetEventsHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	cluster, _ := r.Context().Value(types.ClusterScope).(*models.Cluster)
+
+	request := &types.GetEventRequest{}
+
+	if ok := c.DecodeAndValidate(w, r, request); !ok {
+		return
+	}
+
+	agent, err := c.GetAgent(r, cluster, "")
+
+	if err != nil {
+		c.HandleAPIError(w, r, apierrors.NewErrInternal(err))
+		return
+	}
+
+	// get agent service
+	agentSvc, err := porter_agent.GetAgentService(agent.Clientset)
+
+	if err != nil {
+		c.HandleAPIError(w, r, apierrors.NewErrInternal(err))
+		return
+	}
+
+	logs, err := porter_agent.GetHistoricalEvents(agent.Clientset, agentSvc, request)
+
+	if err != nil {
+		c.HandleAPIError(w, r, apierrors.NewErrInternal(err))
+		return
+	}
+
+	c.WriteResult(w, r, logs)
+}

api/server/router/cluster.go

@@ -1241,6 +1241,35 @@ func getClusterRoutes(
 		Router:   r,
 	})
 
+	// GET /api/projects/{project_id}/clusters/{cluster_id}/events -> cluster.NewGetEventsHandler
+	getEventsEndpoint := factory.NewAPIEndpoint(
+		&types.APIRequestMetadata{
+			Verb:   types.APIVerbGet,
+			Method: types.HTTPVerbGet,
+			Path: &types.Path{
+				Parent:       basePath,
+				RelativePath: fmt.Sprintf("%s/events", relPath),
+			},
+			Scopes: []types.PermissionScope{
+				types.UserScope,
+				types.ProjectScope,
+				types.ClusterScope,
+			},
+		},
+	)
+
+	getEventsHandler := cluster.NewGetEventsHandler(
+		config,
+		factory.GetDecoderValidator(),
+		factory.GetResultWriter(),
+	)
+
+	routes = append(routes, &router.Route{
+		Endpoint: getEventsEndpoint,
+		Handler:  getEventsHandler,
+		Router:   r,
+	})
+
 	// POST /api/projects/{project_id}/clusters/{cluster_id}/incidents/notify_new -> cluster.NewNotifyNewIncidentHandler
 	notifyNewIncidentEndpoint := factory.NewAPIEndpoint(
 		&types.APIRequestMetadata{

api/types/incident.go

@@ -110,3 +110,21 @@ type GetLogResponse struct {
 	ContinueTime *time.Time `json:"continue_time"`
 	Logs         []LogLine  `json:"logs"`
 }
+
+type GetEventRequest struct {
+	Limit       uint       `schema:"limit"`
+	StartRange  *time.Time `schema:"start_range"`
+	EndRange    *time.Time `schema:"end_range"`
+	PodSelector string     `schema:"pod_selector" form:"required"`
+	Namespace   string     `schema:"namespace" form:"required"`
+}
+
+type EventLine struct {
+	Timestamp *time.Time `json:"timestamp"`
+	Event     string     `json:"event"`
+}
+
+type GetEventResponse struct {
+	ContinueTime *time.Time  `json:"continue_time"`
+	Events       []EventLine `json:"events"`
+}

internal/kubernetes/porter_agent/v2/agent_server.go

@@ -195,3 +195,60 @@ func GetHistoricalLogs(
 
 	return logsResp, nil
 }
+
+func GetHistoricalEvents(
+	clientset kubernetes.Interface,
+	service *v1.Service,
+	req *types.GetEventRequest,
+) (*types.GetEventResponse, error) {
+	vals := make(map[string]string)
+
+	if req.Limit != 0 {
+		vals["limit"] = fmt.Sprintf("%d", req.Limit)
+	}
+
+	if req.StartRange != nil {
+		startVal, err := req.StartRange.MarshalText()
+
+		if err != nil {
+			return nil, err
+		}
+
+		vals["start_range"] = string(startVal)
+	}
+
+	if req.EndRange != nil {
+		endVal, err := req.EndRange.MarshalText()
+
+		if err != nil {
+			return nil, err
+		}
+
+		vals["end_range"] = string(endVal)
+	}
+
+	vals["pod_selector"] = req.PodSelector
+	vals["namespace"] = req.Namespace
+
+	resp := clientset.CoreV1().Services(service.Namespace).ProxyGet(
+		"http",
+		service.Name,
+		fmt.Sprintf("%d", service.Spec.Ports[0].Port),
+		"/events",
+		vals,
+	)
+
+	rawQuery, err := resp.DoRaw(context.Background())
+	if err != nil {
+		return nil, err
+	}
+
+	eventsResp := &types.GetEventResponse{}
+
+	err = json.Unmarshal(rawQuery, eventsResp)
+	if err != nil {
+		return nil, err
+	}
+
+	return eventsResp, nil
+}