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[feature] Add a request ID and include it in logs (#1476)

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This adds a lightweight form of tracing to GTS. Each incoming request is
assigned a Request ID which we then pass on and log in all our log
lines. Any function that gets called downstream from an HTTP handler
should now emit a requestID=value pair whenever it logs something.

Co-authored-by: kim <grufwub@gmail.com>
This commit is contained in:
Daenney 2023-02-17 12:02:29 +01:00 • committed by GitHub
commit 68e6d08c76
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GPG key ID: 4AEE18F83AFDEB23
118 changed files with 813 additions and 591 deletions
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4
internal/transport/controller.go
View file

@ -76,13 +76,13 @@ func NewController(db db.DB, federatingDB federatingdb.DB, clock pub.Clock, clie
// Transport cache has TTL=1hr freq=1min
c.trspCache.SetTTL(time.Hour, false)
if !c.trspCache.Start(time.Minute) {
log.Panic("failed to start transport controller cache")
log.Panic(nil, "failed to start transport controller cache")
}
// Bad hosts cache has TTL=15min freq=1min
c.badHosts.SetTTL(15*time.Minute, false)
if !c.badHosts.Start(time.Minute) {
log.Panic("failed to start transport controller cache")
log.Panic(nil, "failed to start transport controller cache")
}
return c

14
internal/transport/derefinstance.go
View file

@ -45,26 +45,26 @@ func (t *transport) DereferenceInstance(ctx context.Context, iri *url.URL) (*gts
// This will provide the most complete picture of an instance, and avoid unnecessary api calls.
//
// This will only work with Mastodon-api compatible instances: Mastodon, some Pleroma instances, GoToSocial.
log.Debugf("trying to dereference instance %s by /api/v1/instance", iri.Host)
log.Debugf(ctx, "trying to dereference instance %s by /api/v1/instance", iri.Host)
i, err = dereferenceByAPIV1Instance(ctx, t, iri)
if err == nil {
log.Debugf("successfully dereferenced instance using /api/v1/instance")
log.Debugf(ctx, "successfully dereferenced instance using /api/v1/instance")
return i, nil
}
log.Debugf("couldn't dereference instance using /api/v1/instance: %s", err)
log.Debugf(ctx, "couldn't dereference instance using /api/v1/instance: %s", err)
// If that doesn't work, try to dereference using /.well-known/nodeinfo.
// This will involve two API calls and return less info overall, but should be more widely compatible.
log.Debugf("trying to dereference instance %s by /.well-known/nodeinfo", iri.Host)
log.Debugf(ctx, "trying to dereference instance %s by /.well-known/nodeinfo", iri.Host)
i, err = dereferenceByNodeInfo(ctx, t, iri)
if err == nil {
log.Debugf("successfully dereferenced instance using /.well-known/nodeinfo")
log.Debugf(ctx, "successfully dereferenced instance using /.well-known/nodeinfo")
return i, nil
}
log.Debugf("couldn't dereference instance using /.well-known/nodeinfo: %s", err)
log.Debugf(ctx, "couldn't dereference instance using /.well-known/nodeinfo: %s", err)
// we couldn't dereference the instance using any of the known methods, so just return a minimal representation
log.Debugf("returning minimal representation of instance %s", iri.Host)
log.Debugf(ctx, "returning minimal representation of instance %s", iri.Host)
id, err := id.NewRandomULID()
if err != nil {
return nil, fmt.Errorf("error creating new id for instance %s: %s", iri.Host, err)

11
internal/transport/transport.go
View file

@ -130,11 +130,12 @@ func (t *transport) do(r *http.Request, signer func(*http.Request) error) (*http
fastFail := IsFastfail(r.Context())
// Start a log entry for this request
l := log.WithFields(kv.Fields{
{"pubKeyID", t.pubKeyID},
{"method", r.Method},
{"url", r.URL.String()},
}...)
l := log.WithContext(r.Context()).
WithFields(kv.Fields{
{"pubKeyID", t.pubKeyID},
{"method", r.Method},
{"url", r.URL.String()},
}...)
r.Header.Set("User-Agent", t.controller.userAgent)