chore: migrate to Go modules

vendor/github.com/segmentio/kafka-go/commit.go

@@ -0,0 +1,39 @@
+package kafka
+
+// A commit represents the instruction of publishing an update of the last
+// offset read by a program for a topic and partition.
+type commit struct {
+	topic     string
+	partition int
+	offset    int64
+}
+
+// makeCommit builds a commit value from a message, the resulting commit takes
+// its topic, partition, and offset from the message.
+func makeCommit(msg Message) commit {
+	return commit{
+		topic:     msg.Topic,
+		partition: msg.Partition,
+		offset:    msg.Offset + 1,
+	}
+}
+
+// makeCommits generates a slice of commits from a list of messages, it extracts
+// the topic, partition, and offset of each message and builds the corresponding
+// commit slice.
+func makeCommits(msgs ...Message) []commit {
+	commits := make([]commit, len(msgs))
+
+	for i, m := range msgs {
+		commits[i] = makeCommit(m)
+	}
+
+	return commits
+}
+
+// commitRequest is the data type exchanged between the CommitMessages method
+// and internals of the reader's implementation.
+type commitRequest struct {
+	commits []commit
+	errch   chan<- error
+}