multi_threaded_processed.py

from concurrent.futures import ThreadPoolExecutor
import os
import random
import subprocess
import timeit

import datasets

"""Example
git init
git remote add origin https://github.com/huggingface/evaluate.git
git fetch --depth 2 origin 9b056cdd5eb95459ae80142014865263e7dd75b8
# Get file after change
git checkout FETCH_HEAD -- README.md
# Get file before change
git checkout FETCH_HEAD^ -- README.md
"""

# In the multiprocessing case, the below leads to each process creating the same directory
# random = random.Random(42)  # make it reproducible

NUM_THREADS = 16
NUM_PROC = 64
DEBUG_SIZE = 4096

CWD = os.getcwd()

# Shell utils
def run_in_shell(cmd: str, cwd=None, timeout=60):
    return subprocess.run([cmd], capture_output=True, shell=True, cwd=cwd, timeout=timeout)

def get_file_contents(commit, old_file, new_file, repo, cwd=None):
    completed = run_in_shell("git init", cwd=cwd)
    completed = run_in_shell("git remote add origin " + repo, cwd=cwd)
    completed = run_in_shell("git fetch --depth 2 origin " + commit, cwd=cwd)
     # If it requires authentication
    if completed.returncode != 0:
        return ("", "")
    # Optionally do git diff at the same time (Saving code needs to be added)
    # git_diff = run_in_shell(f"git diff {commit}^ {commit}", cwd=cwd).stdout.decode(errors='ignore')
    completed = run_in_shell("git checkout FETCH_HEAD -- " + new_file, cwd=cwd)
    new_contents = run_in_shell("cat " + new_file, cwd=cwd).stdout.decode(errors='ignore')
    completed = run_in_shell("git checkout FETCH_HEAD^ -- " + old_file, cwd=cwd)
    # If there's only a new file, but no old file
    if completed.returncode != 0:
        return (new_contents, "")
    old_contents = run_in_shell("cat " + old_file, cwd=cwd).stdout.decode(errors='ignore')
    return (new_contents, old_contents)

def get_diff(ex):
    commit_id = ex["commit"]
    repos = list(set(ex["repos"].split(",")))
    old_file = ex["old_file"]
    new_file = ex["new_file"]
    for i, repo in enumerate(repos):
        repo = "https://xxx:[email protected]/" + repo + ".git"
        # Create a random directory to store the repo
        random_dir = CWD + "/" + str(random.randint(0, 1000000))
        # Can take very long when running many processes
        run_in_shell("mkdir " + random_dir, timeout=300)
        try:
            new_contents, old_contents = get_file_contents(commit_id, old_file, new_file, repo, cwd=random_dir)
        except Exception as e:
            # Break in case of many repos that all lead us nowhere
            if i > 10:
                break
            continue
        finally:
            run_in_shell("rm -rf " + random_dir) # clean up again
        ex["new_contents"] = new_contents
        ex["old_contents"] = old_contents
        return ex
    # If no repo worked
    ex["new_contents"] = ""
    ex["old_contents"] = ""
    return ex

def get_diff_multi_threaded_processed(batch):
    with ThreadPoolExecutor(max_workers=NUM_THREADS) as executor:
        # Convert dict of lists to list of dicts then map to threads
        results = list(executor.map(get_diff, [dict(zip(batch,t)) for t in zip(*batch.values())]))
        # Convert list of dicts to dict of lists
        return {k: [dic[k] for dic in results] for k in results[0]}

if __name__ == "__main__":
    # git clone bigcode/github-commits
    ds = datasets.load_dataset("./github-commits", use_auth_token=True)["train"]

    ### OPTIONAL FILTERING ###
    """
    java = [".java"]
    javascript = [
        ".js",
        "._js",
        ".bones",
        ".es6",
        ".jake",
        ".jsb",
        ".jscad",
        ".jsfl",
        ".jsm",
        ".jss",
        ".njs",
        ".pac",
        ".sjs",
        ".ssjs",
        ".xsjs",
        ".xsjslib"
    ]
    python = [
        ".py",
        ".bzl",
        ".gyp",
        ".lmi",
        ".pyde",
        ".pyp",
        ".pyt",
        ".pyw",
        ".tac",
        ".wsgi",
        ".xpy"
    ]

    import json
    with open("programming-languages.json", "r") as f:
        extensions = json.load(f)
    suffices = [suffix for suffices in extensions.values() for suffix in suffices]    
    def filter_extension(ex):
        splits = ex["new_file"].split(".")
        if len(splits) == 1: return False
        return "." + splits[-1] in suffices
    def filter_extension_python(ex):
        splits = ex["new_file"].split(".")
        if len(splits) == 1: return False
        splits = ex["new_file"].split(".")
        return "." + splits[-1] in python
    def filter_update(ex):
        return ex["message"] != "Update " + ex["old_file"]

    filter_msg = ["initial commit", "please\n", "please"]
    
    def filter_misc(ex):
        return ex["message"] not in filter_msg
    # Removes ~10M
    ds = ds.filter(filter_extension, num_proc=NUM_PROC)
    print("After Extension filter", len(ds))
    # Removes ~1M
    ds = ds.filter(filter_update, num_proc=NUM_PROC)
    print("After Update filter", len(ds))
    ds = ds.filter(filter_extension_python, num_proc=NUM_PROC)
    print("After Python filter", len(ds))
    ds = ds.filter(filter_misc, num_proc=NUM_PROC)
    print("After Misc filter", len(ds))    
    ds = ds.select(range(DEBUG_SIZE))
    """
    ### END FILTERING ###
    
    def run_multi_processing_threading():
        ds.map(get_diff_multi_threaded_processed, num_proc=NUM_PROC, batch_size=NUM_THREADS, batched=True).to_json("mpt.jsonl")

    NUM_TRIALS = 1
    print(f"Timing multithreading + multiprocessing using {NUM_THREADS} threads and {NUM_PROC} processes")
    time = timeit.timeit(stmt=run_multi_processing_threading, number=NUM_TRIALS)
    print("Time:", time)
    with open("mpt.txt", "w") as f:
        f.write(str(time))
    
    #run_multi_processing_threading()