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package log
import (
"context"
"log"
"runtime"
)
// Logger is the interface used to log panics that occur during query execution. It is settable via graphql.ParseSchema.
type Logger interface {
LogPanic(ctx context.Context, value interface{})
}
// LoggerFunc is a function type that implements the Logger interface.
type LoggerFunc func(ctx context.Context, value interface{})
// LogPanic calls the LoggerFunc with the given context and panic value.
func (f LoggerFunc) LogPanic(ctx context.Context, value interface{}) {
f(ctx, value)
}
// DefaultLogger is the default logger used to log panics that occur during query execution.
type DefaultLogger struct{}
// LogPanic is used to log recovered panic values that occur during query execution.
func (l *DefaultLogger) LogPanic(ctx context.Context, value interface{}) {
const size = 64 << 10
buf := make([]byte, size)
buf = buf[:runtime.Stack(buf, false)]
log.Printf("graphql: panic occurred: %v\n%s\ncontext: %v", value, buf, ctx)
}
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