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Merge pull request #522 from swarajpande5/relocate-fix
Relocate `File` and `HttpClient` to their respective modules
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| # The following code is inspired from: https://github.com/ericcurtin/lm-pull/blob/main/lm-pull.py | ||
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| import fcntl | ||
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| class File: | ||
| def __init__(self): | ||
| self.file = None | ||
| self.fd = -1 | ||
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| def open(self, filename, mode): | ||
| self.file = open(filename, mode) | ||
| return self.file | ||
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| def lock(self): | ||
| if self.file: | ||
| self.fd = self.file.fileno() | ||
| try: | ||
| fcntl.flock(self.fd, fcntl.LOCK_EX | fcntl.LOCK_NB) | ||
| except BlockingIOError: | ||
| self.fd = -1 | ||
| return 1 | ||
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| return 0 | ||
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| def __del__(self): | ||
| if self.fd >= 0: | ||
| fcntl.flock(self.fd, fcntl.LOCK_UN) | ||
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| if self.file: | ||
| self.file.close() |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,156 @@ | ||
| # The following code is inspired from: https://github.com/ericcurtin/lm-pull/blob/main/lm-pull.py | ||
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| import os | ||
| import shutil | ||
| import sys | ||
| import time | ||
| import urllib.request | ||
| import urllib.error | ||
| from ramalama.file import File | ||
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| class HttpClient: | ||
| def __init__(self): | ||
| pass | ||
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| def init(self, url, headers, output_file, progress, response_str=None): | ||
| output_file_partial = None | ||
| if output_file: | ||
| output_file_partial = output_file + ".partial" | ||
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| self.file_size = self.set_resume_point(output_file_partial) | ||
| self.printed = False | ||
| if self.urlopen(url, headers): | ||
| return 1 | ||
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| self.total_to_download = int(self.response.getheader('content-length', 0)) | ||
| if response_str is not None: | ||
| response_str.append(self.response.read().decode('utf-8')) | ||
| else: | ||
| out = File() | ||
| if not out.open(output_file_partial, "ab"): | ||
| print("Failed to open file") | ||
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| return 1 | ||
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| if out.lock(): | ||
| print("Failed to exclusively lock file") | ||
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| return 1 | ||
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| self.now_downloaded = 0 | ||
| self.start_time = time.time() | ||
| self.perform_download(out.file, progress) | ||
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| if output_file: | ||
| os.rename(output_file_partial, output_file) | ||
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| if self.printed: | ||
| print("\n") | ||
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| return 0 | ||
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| def urlopen(self, url, headers): | ||
| headers["Range"] = f"bytes={self.file_size}-" | ||
| request = urllib.request.Request(url, headers=headers) | ||
| try: | ||
| self.response = urllib.request.urlopen(request) | ||
| except urllib.error.HTTPError as e: | ||
| print(f"Request failed: {e.code}", file=sys.stderr) | ||
| return 1 | ||
| except urllib.error.URLError as e: | ||
| print(f"Network error: {e.reason}", file=sys.stderr) | ||
| return 1 | ||
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| if self.response.status not in (200, 206): | ||
| print(f"Request failed: {self.response.status}", file=sys.stderr) | ||
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| return 1 | ||
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| return 0 | ||
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| def perform_download(self, file, progress): | ||
| self.total_to_download += self.file_size | ||
| self.now_downloaded = 0 | ||
| self.start_time = time.time() | ||
| while True: | ||
| data = self.response.read(1024) | ||
| if not data: | ||
| break | ||
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| size = file.write(data) | ||
| if progress: | ||
| self.update_progress(size) | ||
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| def human_readable_time(self, seconds): | ||
| hrs = int(seconds) // 3600 | ||
| mins = (int(seconds) % 3600) // 60 | ||
| secs = int(seconds) % 60 | ||
| width = 10 | ||
| if hrs > 0: | ||
| return f"{hrs}h {mins:02}m {secs:02}s".rjust(width) | ||
| elif mins > 0: | ||
| return f"{mins}m {secs:02}s".rjust(width) | ||
| else: | ||
| return f"{secs}s".rjust(width) | ||
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| def human_readable_size(self, size): | ||
| width = 10 | ||
| for unit in ["B", "KB", "MB", "GB", "TB"]: | ||
| if size < 1024: | ||
| return f"{size:.2f} {unit}".rjust(width) | ||
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| size /= 1024 | ||
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| return f"{size:.2f} PB".rjust(width) | ||
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| def get_terminal_width(self): | ||
| return shutil.get_terminal_size().columns | ||
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| def generate_progress_prefix(self, percentage): | ||
| return f"{percentage}% |".rjust(6) | ||
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| def generate_progress_suffix(self, now_downloaded_plus_file_size, speed, estimated_time): | ||
| return f"{self.human_readable_size(now_downloaded_plus_file_size)}/{self.human_readable_size(self.total_to_download)}{self.human_readable_size(speed)}/s{self.human_readable_time(estimated_time)}" # noqa: E501 | ||
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| def calculate_progress_bar_width(self, progress_prefix, progress_suffix): | ||
| progress_bar_width = self.get_terminal_width() - len(progress_prefix) - len(progress_suffix) - 3 | ||
| if progress_bar_width < 1: | ||
| progress_bar_width = 1 | ||
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| return progress_bar_width | ||
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| def generate_progress_bar(self, progress_bar_width, percentage): | ||
| pos = (percentage * progress_bar_width) // 100 | ||
| progress_bar = "" | ||
| for i in range(progress_bar_width): | ||
| progress_bar += "█" if i < pos else " " | ||
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| return progress_bar | ||
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| def set_resume_point(self, output_file): | ||
| if output_file and os.path.exists(output_file): | ||
| return os.path.getsize(output_file) | ||
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| return 0 | ||
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| def print_progress(self, progress_prefix, progress_bar, progress_suffix): | ||
| print(f"\r{progress_prefix}{progress_bar}| {progress_suffix}", end="") | ||
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| def update_progress(self, chunk_size): | ||
| self.now_downloaded += chunk_size | ||
| now_downloaded_plus_file_size = self.now_downloaded + self.file_size | ||
| percentage = (now_downloaded_plus_file_size * 100) // self.total_to_download if self.total_to_download else 100 | ||
| progress_prefix = self.generate_progress_prefix(percentage) | ||
| speed = self.calculate_speed(self.now_downloaded, self.start_time) | ||
| tim = (self.total_to_download - self.now_downloaded) // speed | ||
| progress_suffix = self.generate_progress_suffix(now_downloaded_plus_file_size, speed, tim) | ||
| progress_bar_width = self.calculate_progress_bar_width(progress_prefix, progress_suffix) | ||
| progress_bar = self.generate_progress_bar(progress_bar_width, percentage) | ||
| self.print_progress(progress_prefix, progress_bar, progress_suffix) | ||
| self.printed = True | ||
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| def calculate_speed(self, now_downloaded, start_time): | ||
| now = time.time() | ||
| elapsed_seconds = now - start_time | ||
| return now_downloaded / elapsed_seconds |