mirror of
https://github.com/gitpod-io/gitpod.git
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103 lines
3.3 KiB
Go
103 lines
3.3 KiB
Go
// Copyright (c) 2023 Gitpod GmbH. All rights reserved.
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// Licensed under the GNU Affero General Public License (AGPL).
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// See License.AGPL.txt in the project root for license information.
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package serverapi
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import (
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"context"
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"errors"
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"time"
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protocol "github.com/gitpod-io/gitpod/gitpod-protocol"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/sourcegraph/jsonrpc2"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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)
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const (
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ServerTypePublicAPI = "public-api"
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)
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type ClientMetrics struct {
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clientHandledCounter *prometheus.CounterVec
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clientHandledHistogram *prometheus.HistogramVec
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}
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func NewClientMetrics() *ClientMetrics {
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return &ClientMetrics{
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clientHandledCounter: prometheus.NewCounterVec(
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prometheus.CounterOpts{
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Name: "supervisor_client_handled_total",
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Help: "Total number of supervisor outgoing services completed by the client, regardless of success or failure.",
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// add server label to identify it's going for server api or public api
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}, []string{"method", "server", "err_code"}),
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clientHandledHistogram: prometheus.NewHistogramVec(
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prometheus.HistogramOpts{
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Name: "supervisor_client_handling_seconds",
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Help: "Histogram of response latency (seconds) of the supervisor outgoing services until it is finished by the application.",
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// it should be aligned with https://github.com/gitpod-io/gitpod/blob/84ed1a0672d91446ba33cb7b504cfada769271a8/install/installer/pkg/components/ide-metrics/configmap.go#L315
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Buckets: []float64{0.1, 0.2, 0.5, 1, 2, 5, 10},
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}, []string{"method", "server", "err_code"}),
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}
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}
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func (c *ClientMetrics) ProcessMetrics(method string, err error, startTime time.Time) {
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code := status.Code(normalizeError(err))
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server := ServerTypePublicAPI
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c.clientHandledCounter.WithLabelValues(method, server, code.String()).Inc()
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c.clientHandledHistogram.WithLabelValues(method, server, code.String()).Observe(time.Since(startTime).Seconds())
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}
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// guard to make sure ClientMetrics implement Collector interface
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var _ prometheus.Collector = (*ClientMetrics)(nil)
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func (c *ClientMetrics) Collect(ch chan<- prometheus.Metric) {
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c.clientHandledCounter.Collect(ch)
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c.clientHandledHistogram.Collect(ch)
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}
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func (c *ClientMetrics) Describe(ch chan<- *prometheus.Desc) {
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c.clientHandledCounter.Describe(ch)
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c.clientHandledHistogram.Describe(ch)
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}
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func normalizeError(err error) error {
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if err == nil {
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return nil
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}
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if errors.Is(err, context.Canceled) {
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return status.Error(codes.Canceled, context.Canceled.Error())
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}
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if rpcErr := new(jsonrpc2.Error); errors.As(err, &rpcErr) {
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switch rpcErr.Code {
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case 400:
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return status.Error(codes.InvalidArgument, rpcErr.Message)
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case 401:
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return status.Error(codes.Unauthenticated, rpcErr.Message)
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case 403:
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return status.Error(codes.PermissionDenied, rpcErr.Message)
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case 404:
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return status.Error(codes.NotFound, rpcErr.Message)
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case 409:
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return status.Error(codes.AlreadyExists, rpcErr.Message)
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case -32603:
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return status.Error(codes.Internal, rpcErr.Message)
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case 470:
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return status.Error(codes.PermissionDenied, rpcErr.Message)
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default:
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return status.Error(codes.Internal, rpcErr.Message)
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}
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}
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if handshakeErr := new(protocol.ErrBadHandshake); errors.As(err, &handshakeErr) {
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return status.Error(codes.Unauthenticated, "Failed to establish caller identity")
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}
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return err
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}
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