Developing a log processing tool
Having covered the fundamentals of pipes in IPC and best practices for their use in Go, let’s explore more advanced topics. We will explore a scenario where pipes can be effectively utilized and see how Go’s concurrency model complements these use cases. This section aims to give you practical insights into leveraging pipes for sophisticated system programming tasks.
In the next example, we’ll develop a simple real-time log processing tool. This tool will read log data from a file (simulating a log file being written by another process), process the log entries (for example, filtering based on severity), and then output the results to the console.
First, we create a filterLogs() function that reads logs from the reader, filters them, and writes to the writer:
func filterLogs(reader io.Reader, writer io.Writer) {
scanner := bufio.NewScanner(reader)
for scanner.Scan() {
...
