Enable stricter linting with golangci-lint (#316)

* update golangci-lint

* add golangci config file w/ more linters

* correct issues flagged by stricter linters

* add more generous timeout for golangci-lint

* add some style + formatting guidelines

* move timeout to config file

* go fmt

1 files changed, 15 insertions, 3 deletions

diff --git a/internal/federation/federatingdb/util.go b/internal/federation/federatingdb/util.go
index 87b85aed6..f35fbbb2d 100644
--- a/internal/federation/federatingdb/util.go
+++ b/internal/federation/federatingdb/util.go
@@ -308,17 +308,29 @@ func (f *federatingDB) collectIRIs(ctx context.Context, iris []*url.URL) (vocab.
 func extractFromCtx(ctx context.Context) (receivingAccount, requestingAccount *gtsmodel.Account, fromFederatorChan chan messages.FromFederator) {
 	receivingAccountI := ctx.Value(util.APReceivingAccount)
 	if receivingAccountI != nil {
-		receivingAccount = receivingAccountI.(*gtsmodel.Account)
+		var ok bool
+		receivingAccount, ok = receivingAccountI.(*gtsmodel.Account)
+		if !ok {
+			logrus.Panicf("extractFromCtx: context entry with key %s could not be asserted to *gtsmodel.Account", util.APReceivingAccount)
+		}
 	}
 
 	requestingAcctI := ctx.Value(util.APRequestingAccount)
 	if requestingAcctI != nil {
-		requestingAccount = requestingAcctI.(*gtsmodel.Account)
+		var ok bool
+		requestingAccount, ok = requestingAcctI.(*gtsmodel.Account)
+		if !ok {
+			logrus.Panicf("extractFromCtx: context entry with key %s could not be asserted to *gtsmodel.Account", util.APRequestingAccount)
+		}
 	}
 
 	fromFederatorChanI := ctx.Value(util.APFromFederatorChanKey)
 	if fromFederatorChanI != nil {
-		fromFederatorChan = fromFederatorChanI.(chan messages.FromFederator)
+		var ok bool
+		fromFederatorChan, ok = fromFederatorChanI.(chan messages.FromFederator)
+		if !ok {
+			logrus.Panicf("extractFromCtx: context entry with key %s could not be asserted to chan messages.FromFederator", util.APFromFederatorChanKey)
+		}
 	}
 
 	return