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https://github.com/cloudflare/cloudflared.git
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30197e7dfa
Adds new suite of metrics to capture the following for capnp rpcs operations: - Method calls - Method call failures - Method call latencies Each of the operations is labeled by the handler that serves the method and the method of operation invoked. Additionally, each of these are split between if the operation was called by a client or served.
90 lines
3.4 KiB
Go
90 lines
3.4 KiB
Go
package quic
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import (
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"context"
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"fmt"
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"io"
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"net"
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"time"
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"zombiezen.com/go/capnproto2/rpc"
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"github.com/google/uuid"
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"github.com/cloudflare/cloudflared/tunnelrpc"
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"github.com/cloudflare/cloudflared/tunnelrpc/metrics"
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"github.com/cloudflare/cloudflared/tunnelrpc/pogs"
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)
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// CloudflaredClient calls capnp rpc methods of SessionManager and ConfigurationManager.
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type CloudflaredClient struct {
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client pogs.CloudflaredServer_PogsClient
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transport rpc.Transport
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requestTimeout time.Duration
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}
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func NewCloudflaredClient(ctx context.Context, stream io.ReadWriteCloser, requestTimeout time.Duration) (*CloudflaredClient, error) {
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n, err := stream.Write(rpcStreamProtocolSignature[:])
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if err != nil {
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return nil, err
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}
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if n != len(rpcStreamProtocolSignature) {
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return nil, fmt.Errorf("expect to write %d bytes for RPC stream protocol signature, wrote %d", len(rpcStreamProtocolSignature), n)
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}
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transport := tunnelrpc.SafeTransport(stream)
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conn := rpc.NewConn(transport)
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client := pogs.NewCloudflaredServer_PogsClient(conn.Bootstrap(ctx), conn)
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return &CloudflaredClient{
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client: client,
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transport: transport,
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requestTimeout: requestTimeout,
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}, nil
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}
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func (c *CloudflaredClient) RegisterUdpSession(ctx context.Context, sessionID uuid.UUID, dstIP net.IP, dstPort uint16, closeIdleAfterHint time.Duration, traceContext string) (*pogs.RegisterUdpSessionResponse, error) {
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ctx, cancel := context.WithTimeout(ctx, c.requestTimeout)
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defer cancel()
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defer metrics.CapnpMetrics.ClientOperations.WithLabelValues(metrics.Cloudflared, metrics.OperationRegisterUdpSession).Inc()
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timer := metrics.NewClientOperationLatencyObserver(metrics.Cloudflared, metrics.OperationRegisterUdpSession)
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defer timer.ObserveDuration()
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resp, err := c.client.RegisterUdpSession(ctx, sessionID, dstIP, dstPort, closeIdleAfterHint, traceContext)
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if err != nil {
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metrics.CapnpMetrics.ClientFailures.WithLabelValues(metrics.Cloudflared, metrics.OperationRegisterUdpSession).Inc()
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}
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return resp, err
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}
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func (c *CloudflaredClient) UnregisterUdpSession(ctx context.Context, sessionID uuid.UUID, message string) error {
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ctx, cancel := context.WithTimeout(ctx, c.requestTimeout)
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defer cancel()
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defer metrics.CapnpMetrics.ClientOperations.WithLabelValues(metrics.Cloudflared, metrics.OperationUnregisterUdpSession).Inc()
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timer := metrics.NewClientOperationLatencyObserver(metrics.Cloudflared, metrics.OperationUnregisterUdpSession)
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defer timer.ObserveDuration()
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err := c.client.UnregisterUdpSession(ctx, sessionID, message)
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if err != nil {
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metrics.CapnpMetrics.ClientFailures.WithLabelValues(metrics.Cloudflared, metrics.OperationUnregisterUdpSession).Inc()
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}
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return err
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}
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func (c *CloudflaredClient) UpdateConfiguration(ctx context.Context, version int32, config []byte) (*pogs.UpdateConfigurationResponse, error) {
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ctx, cancel := context.WithTimeout(ctx, c.requestTimeout)
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defer cancel()
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defer metrics.CapnpMetrics.ClientOperations.WithLabelValues(metrics.Cloudflared, metrics.OperationUpdateConfiguration).Inc()
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timer := metrics.NewClientOperationLatencyObserver(metrics.Cloudflared, metrics.OperationUpdateConfiguration)
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defer timer.ObserveDuration()
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resp, err := c.client.UpdateConfiguration(ctx, version, config)
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if err != nil {
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metrics.CapnpMetrics.ClientFailures.WithLabelValues(metrics.Cloudflared, metrics.OperationUpdateConfiguration).Inc()
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}
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return resp, err
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}
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func (c *CloudflaredClient) Close() {
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_ = c.client.Close()
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_ = c.transport.Close()
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}
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