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Signed-off-by: Monthon Klongklaew <monthonk@amazon.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| //! A helper binary for parsing Mountpoint logs and collecting metrics. | ||
| //! Currently, we are only interested in peak memory usage from `process.memory_usage`. | ||
| //! | ||
| //! This binary is intended only for use in testing and development of Mountpoint. | ||
|
|
||
| use std::{ | ||
| fs::{self, File}, | ||
| io::{BufRead, BufReader, BufWriter, Write}, | ||
| path::PathBuf, | ||
| }; | ||
|
|
||
| use clap::Parser; | ||
| use serde_json::json; | ||
|
|
||
| #[derive(Parser, Debug)] | ||
| struct CliArgs { | ||
| #[clap(help = "Log directory to analyze", value_name = "LOG_DIRECTORY")] | ||
| log_dir: PathBuf, | ||
|
|
||
| #[clap(help = "Output JSON file name", value_name = "OUTPUT_FILE")] | ||
| out_file: PathBuf, | ||
|
|
||
| #[clap(help = "Test name to be reported in JSON file")] | ||
| test_name: String, | ||
|
|
||
| #[clap( | ||
| help = "Log filter string [default: process.memory_usage]", | ||
| default_value = "process.memory_usage" | ||
| )] | ||
| log_filter_str: String, | ||
| } | ||
|
|
||
| fn main() -> anyhow::Result<()> { | ||
| let args = CliArgs::parse(); | ||
| let paths = fs::read_dir(args.log_dir)?; | ||
|
|
||
| let mut metric_values: Vec<u64> = Vec::new(); | ||
|
|
||
| // collect metrics from all log files in the given directory | ||
| for path in paths { | ||
| let path = path?; | ||
| let file_type = path.file_type()?; | ||
| if file_type.is_file() { | ||
| let file = File::open(path.path())?; | ||
| let reader = BufReader::new(file); | ||
|
|
||
| for line in reader.lines().flatten() { | ||
| if line.contains(&args.log_filter_str) { | ||
| let iter = line.split_whitespace(); | ||
| if let Some(Ok(value)) = iter.last().map(|last| last.parse::<u64>()) { | ||
| metric_values.push(value); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| let max = if let Some(value) = metric_values.iter().max() { | ||
| *value as f64 / (1024 * 1024) as f64 | ||
| } else { | ||
| 0.0 | ||
| }; | ||
| let contents = json!({ | ||
| "name": args.test_name, | ||
| "value": max, | ||
| "unit": "MiB", | ||
| }); | ||
| let file = File::create(args.out_file)?; | ||
| let mut writer = BufWriter::new(file); | ||
| serde_json::to_writer(&mut writer, &contents)?; | ||
| writer.flush()?; | ||
| Ok(()) | ||
| } |