77 lines
1.9 KiB
Go
77 lines
1.9 KiB
Go
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package tracing
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import "fmt"
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// Exporter is type of tracing target.
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type Exporter string
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const (
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StdoutExporter Exporter = "stdout"
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OTLPgRPCExporter Exporter = "otlp_grpc"
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NoOpExporter Exporter = "noop"
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)
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type Config struct {
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// Enabled is true, if tracing enabled.
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Enabled bool
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// Exporter is collector type.
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Exporter Exporter
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// Endpoint is collector endpoint for OTLP exporters.
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Endpoint string
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// Service is service name that will be used in tracing.
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// Mandatory.
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Service string
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// InstanceID is identity of service instance.
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// Optional.
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InstanceID string
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// Version is version of service instance.
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// Optional.
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Version string
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}
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func (c *Config) validate() error {
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if !c.Enabled {
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return nil
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}
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if c.Exporter != StdoutExporter && c.Exporter != OTLPgRPCExporter && c.Exporter != NoOpExporter {
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return fmt.Errorf("tracing config error: unknown exporter '%s', valid values are %v",
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c.Exporter, []string{string(StdoutExporter), string(OTLPgRPCExporter), string(NoOpExporter)})
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}
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if len(c.Service) == 0 {
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return fmt.Errorf("tracing config error: service name must be specified")
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}
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if c.Exporter == OTLPgRPCExporter && len(c.Endpoint) == 0 {
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return fmt.Errorf("tracing config error: exporter '%s' requires endpoint", c.Exporter)
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}
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return nil
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}
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func (c *Config) hasChange(other *Config) bool {
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if !c.Enabled && !other.Enabled {
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return false
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}
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if c.Enabled != other.Enabled {
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return true
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}
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if (c.Exporter == StdoutExporter && other.Exporter == StdoutExporter) ||
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(c.Exporter == NoOpExporter && other.Exporter == NoOpExporter) {
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return !c.serviceInfoEqual(other)
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}
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return c.Exporter != other.Exporter ||
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c.Endpoint != other.Endpoint ||
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!c.serviceInfoEqual(other)
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}
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func (c *Config) serviceInfoEqual(other *Config) bool {
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return c.Service == other.Service &&
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c.InstanceID == other.InstanceID &&
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c.Version == other.Version
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}
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