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Add grpc unary server interceptor #312
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| // Package sentrygrpc provides Sentry integration for servers and clients based | ||
| // on the google.golang.org/grpc package. | ||
| package sentrygrpc |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| package sentrygrpc | ||
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| import ( | ||
| "google.golang.org/grpc/codes" | ||
| "google.golang.org/grpc/status" | ||
| ) | ||
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| type options struct { | ||
| repanic bool | ||
| reportOn ReportOn | ||
| } | ||
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| func buildOptions(ff ...Option) options { | ||
| opts := options{ | ||
| reportOn: ReportAlways, | ||
| } | ||
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| for _, f := range ff { | ||
| f(&opts) | ||
| } | ||
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| return opts | ||
| } | ||
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| // Option configures reporting behavior. | ||
| type Option func(*options) | ||
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| // WithRepanic configures whether to panic again after recovering from | ||
| // a panic. Use this option if you have other panic handlers. | ||
| func WithRepanic(b bool) Option { | ||
| return func(o *options) { | ||
| o.repanic = b | ||
| } | ||
| } | ||
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| // WithReportOn configures whether to report on errors. | ||
| func WithReportOn(r ReportOn) Option { | ||
| return func(o *options) { | ||
| o.reportOn = r | ||
| } | ||
| } | ||
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| // ReportOn decides error should be reported to sentry. | ||
| type ReportOn func(error) bool | ||
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| // ReportAlways returns true if err is non-nil. | ||
| func ReportAlways(err error) bool { | ||
| return err != nil | ||
| } | ||
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| // ReportOnCodes returns true if error code matches on of the given codes. | ||
| func ReportOnCodes(cc ...codes.Code) ReportOn { | ||
| return func(err error) bool { | ||
| c := status.Code(err) | ||
| for i := range cc { | ||
| if c == cc[i] { | ||
| return true | ||
| } | ||
| } | ||
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| return false | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| package sentrygrpc | ||
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| import ( | ||
| "context" | ||
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| "github.com/getsentry/sentry-go" | ||
| "google.golang.org/grpc" | ||
| "google.golang.org/grpc/codes" | ||
| "google.golang.org/grpc/status" | ||
| ) | ||
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| // UnaryServerInterceptor is a grpc interceptor that reports errors and panics | ||
| // to sentry. It also sets *sentry.Hub to context. | ||
| func UnaryServerInterceptor(options ...Option) grpc.UnaryServerInterceptor { | ||
| opts := buildOptions(options...) | ||
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| return func( | ||
| ctx context.Context, | ||
| req interface{}, | ||
| info *grpc.UnaryServerInfo, | ||
| handler grpc.UnaryHandler, | ||
| ) (resp interface{}, err error) { | ||
| hub := sentry.GetHubFromContext(ctx) | ||
| if hub == nil { | ||
| hub = sentry.CurrentHub().Clone() | ||
| ctx = sentry.SetHubOnContext(ctx, hub) | ||
| } | ||
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| defer func() { | ||
| if r := recover(); r != nil { | ||
| hub.RecoverWithContext(ctx, r) | ||
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| if opts.repanic { | ||
| panic(r) | ||
| } | ||
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| err = status.Errorf(codes.Internal, "%s", r) | ||
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| } | ||
| }() | ||
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| resp, err = handler(ctx, req) | ||
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| if opts.reportOn(err) { | ||
| hub.CaptureException(err) | ||
| } | ||
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| return resp, err | ||
| } | ||
| } | ||
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I wonder if we should separate options for server/client and unary/stream. Probably they won't diverge too much?
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Good point,
perhaps what would give us more flexibility isLater down the road it could becomeIt would allow us to share options between servers and clients, unary and stream.
Though I'm not sure that's actually a good idea. One downside is discoverability and documentation. If server/client/etc options have the same type, all of them will be grouped together in godoc. If an option doesn't make sense to a certain type (client/server/unary/stream), that would also require documentation to explain instead of being impossible to compile because of incompatible types.
I think the options we have right now are "interceptor options", and should probably be the same for other types of interceptors? Are there other existing concepts we'd expand into?
If there is only reason to be one type of option, for interceptors, then we can keep the name simple,
Option.Sorry, busy day, didn't have much time to think this through but wanted to share and continue the conversation.
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I'm not really sure but both of the following changes shouldn't break user code because they don't directly use
Option. So can we start simple?type Option func(*options)totype Option interface {}.OptiontoInterceptorOption.No worries! We don't need to rush. I (we?) just want to agree on a good design ;)