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package proxyd
import (
"context"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promauto"
"strconv"
"strings"
)
const (
MetricsNamespace = "proxyd"
RPCRequestSourceHTTP = "http"
RPCRequestSourceWS = "ws"
BackendProxyd = "proxyd"
SourceClient = "client"
SourceBackend = "backend"
MethodUnknown = "unknown"
)
var (
rpcRequestsTotal = promauto.NewCounter(prometheus.CounterOpts{
Namespace: MetricsNamespace,
Name: "rpc_requests_total",
Help: "Count of total client RPC requests.",
})
rpcForwardsTotal = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: MetricsNamespace,
Name: "rpc_forwards_total",
Help: "Count of total RPC requests forwarded to each backend.",
}, []string{
"auth",
"backend_name",
"method_name",
"source",
})
rpcErrorsTotal = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: MetricsNamespace,
Name: "rpc_errors_total",
Help: "Count of total RPC errors.",
}, []string{
"auth",
"backend_name",
"method_name",
"error_code",
})
rpcSpecialErrorsTotal = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: MetricsNamespace,
Name: "rpc_special_errors_total",
Help: "Count of total special RPC errors.",
}, []string{
"auth",
"backend_name",
"method_name",
"error_type",
})
rpcBackendRequestDurationSumm = promauto.NewSummaryVec(prometheus.SummaryOpts{
Namespace: MetricsNamespace,
Name: "rpc_backend_request_duration_seconds",
Help: "Summary of backend response times broken down by backend and method name.",
Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.95: 0.005, 0.99: 0.001},
}, []string{
"backend_name",
"method_name",
})
activeClientWsConnsGauge = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: MetricsNamespace,
Name: "active_client_ws_conns",
Help: "Gauge of active client WS connections.",
}, []string{
"auth",
})
activeBackendWsConnsGauge = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: MetricsNamespace,
Name: "active_backend_ws_conns",
Help: "Gauge of active backend WS connections.",
}, []string{
"backend_name",
})
unserviceableRequestsTotal = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: MetricsNamespace,
Name: "unserviceable_requests_total",
Help: "Count of total requests that were rejected due to no backends being available.",
}, []string{
"auth",
"request_source",
})
httpRequestsTotal = promauto.NewCounter(prometheus.CounterOpts{
Namespace: MetricsNamespace,
Name: "http_requests_total",
Help: "Count of total HTTP requests.",
})
httpRequestDurationSumm = promauto.NewSummary(prometheus.SummaryOpts{
Namespace: MetricsNamespace,
Name: "http_request_duration_seconds",
Help: "Summary of HTTP request durations, in seconds.",
Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.95: 0.005, 0.99: 0.001},
})
wsMessagesTotal = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: MetricsNamespace,
Name: "ws_messages_total",
Help: "Count of total websocket messages including protocol control.",
}, []string{
"auth",
"backend_name",
"source",
})
redisErrorsTotal = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: MetricsNamespace,
Name: "redis_errors_total",
Help: "Count of total Redis errors.",
}, []string{
"source",
})
rpcSpecialErrors = []string{
"nonce too low",
"gas price too high",
"gas price too low",
"invalid parameters",
}
)
func RecordRedisError(source string) {
redisErrorsTotal.WithLabelValues(source).Inc()
}
func RecordRPCError(ctx context.Context, backendName, method string, err error) {
rpcErr, ok := err.(*RPCErr)
var code int
if ok {
MaybeRecordSpecialRPCError(ctx, backendName, method, rpcErr)
code = rpcErr.Code
} else {
code = -1
}
rpcErrorsTotal.WithLabelValues(GetAuthCtx(ctx), backendName, method, strconv.Itoa(code)).Inc()
}
func RecordWSMessage(ctx context.Context, backendName, source string) {
wsMessagesTotal.WithLabelValues(GetAuthCtx(ctx), backendName, source).Inc()
}
func RecordUnserviceableRequest(ctx context.Context, source string) {
unserviceableRequestsTotal.WithLabelValues(GetAuthCtx(ctx), source).Inc()
}
func RecordRPCForward(ctx context.Context, backendName, method, source string) {
rpcForwardsTotal.WithLabelValues(GetAuthCtx(ctx), backendName, method, source).Inc()
}
func MaybeRecordSpecialRPCError(ctx context.Context, backendName, method string, rpcErr *RPCErr) {
errMsg := strings.ToLower(rpcErr.Message)
for _, errStr := range rpcSpecialErrors {
if strings.Contains(errMsg, errStr) {
rpcSpecialErrorsTotal.WithLabelValues(GetAuthCtx(ctx), backendName, method, errStr).Inc()
return
}
}
}