github.com/grafana/synthetic-monitoring-agent@v0.64.2/internal/prober/grpc/grpc.go (about)

     1  package grpc
     2  
     3  import (
     4  	"context"
     5  	"errors"
     6  	"time"
     7  
     8  	"github.com/grafana/synthetic-monitoring-agent/internal/model"
     9  	"github.com/grafana/synthetic-monitoring-agent/internal/prober/logger"
    10  	"github.com/grafana/synthetic-monitoring-agent/internal/tls"
    11  	sm "github.com/grafana/synthetic-monitoring-agent/pkg/pb/synthetic_monitoring"
    12  	"github.com/prometheus/blackbox_exporter/config"
    13  	bbeprober "github.com/prometheus/blackbox_exporter/prober"
    14  	"github.com/prometheus/client_golang/prometheus"
    15  	"github.com/rs/zerolog"
    16  )
    17  
    18  var errUnsupportedCheck = errors.New("unsupported check")
    19  
    20  type Prober struct {
    21  	config config.Module
    22  }
    23  
    24  func NewProber(ctx context.Context, check model.Check, logger zerolog.Logger) (Prober, error) {
    25  	if check.Settings.Grpc == nil {
    26  		return Prober{}, errUnsupportedCheck
    27  	}
    28  
    29  	cfg, err := settingsToModule(ctx, check.Settings.Grpc, logger)
    30  	if err != nil {
    31  		return Prober{}, err
    32  	}
    33  
    34  	cfg.Timeout = time.Duration(check.Timeout) * time.Millisecond
    35  
    36  	return Prober{
    37  		config: cfg,
    38  	}, nil
    39  }
    40  
    41  func (p Prober) Name() string {
    42  	return "grpc"
    43  }
    44  
    45  func (p Prober) Probe(ctx context.Context, target string, registry *prometheus.Registry, l logger.Logger, _ string) (bool, float64) {
    46  	slogger := logger.ToSlog(l)
    47  	return bbeprober.ProbeGRPC(ctx, target, p.config, registry, slogger), 0
    48  }
    49  
    50  func settingsToModule(ctx context.Context, settings *sm.GrpcSettings, logger zerolog.Logger) (config.Module, error) {
    51  	var m config.Module
    52  
    53  	m.Prober = sm.CheckTypeGrpc.String()
    54  
    55  	m.GRPC.PreferredIPProtocol, m.GRPC.IPProtocolFallback = settings.IpVersion.ToIpProtocol()
    56  
    57  	m.GRPC.Service = settings.Service
    58  
    59  	m.GRPC.TLS = settings.Tls
    60  
    61  	if settings.TlsConfig != nil {
    62  		var err error
    63  
    64  		m.GRPC.TLSConfig, err = tls.SMtoProm(ctx, logger.With().Str("prober", m.Prober).Logger(), settings.TlsConfig)
    65  		if err != nil {
    66  			return m, err
    67  		}
    68  	}
    69  
    70  	return m, nil
    71  }