chore: update Post install script for downloading binary files

setup.py

@@ -1,15 +1,13 @@
-import platform
 import os
-import sys
-
-from urllib.request import urlopen
 
 from setuptools import setup
 from setuptools.command.install import install as InstallCommand
 
+from tools.download import get_remote_binary
+
 
 version = '0.3.13'
-local_build = os.environ.get('LOCAL', 0)
+local_install = os.environ.get('LOCAL', 0)
 
 
 with open('README.md', 'r') as f:
@@ -20,37 +18,13 @@ class PostInstallCommand(InstallCommand):
     """Post-installation for installation mode."""
 
     def run(self):
-        version_tag = 'v{}'.format(version)
-        url_template = 'https://github.com/LeetCode-OpenSource/py-sourcemap/releases/download/{tag}/py_sourcemap.{py_ver}-{platform}.{ext}'
-        (major, minor, _) = platform.python_version_tuple()
-        if major != '3' or not(minor in ['5', '6', '7']):
-            raise Exception('Only python 3.5, 3.6, 3.7 are supported')
-        system = platform.system()
-        if system == 'Linux':
-            py_version = 'cpython-{}{}m'.format(major, minor)
-            usr_platform = 'x86_64-linux-gnu'
-            ext = 'so'
-        elif system == 'Darwin':
-            py_version = 'cpython-{}{}m'.format(major, minor)
-            usr_platform = 'x86_64-apple-darwin'
-            ext = 'so'
-        elif system == 'Windows':
-            py_version = 'cp{}{}'.format(major, minor)
-            # from https://docs.python.org/3/library/platform.html
-            is_64bits = sys.maxsize > 2**32
-            usr_platform = 'win_amd64' if is_64bits else 'win32'
-            ext = 'pyd'
-        else:
-            raise Exception('Your system is unrecognized: {}'.format(system))
-        download_url = url_template.format(tag=version_tag,
-                                           py_ver=py_version,
-                                           platform=usr_platform,
-                                           ext=ext)
-        dist = os.path.join(self.build_lib, 'py_sourcemap/py_sourcemap.so')
-        if not local_build:
+        if not local_install:
+            dist = os.path.join(self.build_lib, 'py_sourcemap/py_sourcemap.so')
+            binary_fp = get_remote_binary(version)
+
             with open(dist, 'wb') as f:
-                built_lib = urlopen(download_url).read()
-                f.write(built_lib)
+                f.write(binary_fp.read())
+
         InstallCommand.run(self)
 
 

tools/download.py

@@ -0,0 +1,69 @@
+import sys
+import time
+import platform
+from urllib import request
+
+
+PING_TIMEOUT = 3
+
+
+def _get_download_urls(version):
+    s3_url_template = 'https://github.com/LeetCode-OpenSource/py-sourcemap/releases/download/{tag}/py_sourcemap.{py_ver}-{platform}.{ext}'
+    aliyun_url_template = 'https://static.leetcode-cn.com/packages/py_sourcemap/{package_ver}/py_sourcemap.{py_ver}-{platform}.{ext}'
+
+    version_tag = 'v{}'.format(version)
+    (major, minor, _) = platform.python_version_tuple()
+    if major != '3' or not(minor in ['5', '6', '7']):
+        raise Exception('Only python 3.5, 3.6, 3.7 are supported')
+    system = platform.system()
+    if system == 'Linux':
+        py_version = 'cpython-{}{}m'.format(major, minor)
+        usr_platform = 'x86_64-linux-gnu'
+        ext = 'so'
+    elif system == 'Darwin':
+        py_version = 'cpython-{}{}m'.format(major, minor)
+        usr_platform = 'x86_64-apple-darwin'
+        ext = 'so'
+    elif system == 'Windows':
+        py_version = 'cp{}{}'.format(major, minor)
+        # from https://docs.python.org/3/library/platform.html
+        is_64bits = sys.maxsize > 2**32
+        usr_platform = 'win_amd64' if is_64bits else 'win32'
+        ext = 'pyd'
+    else:
+        raise Exception('Your system is unrecognized: {}'.format(system))
+
+    return {
+        's3': s3_url_template.format(tag=version_tag,
+                                     py_ver=py_version,
+                                     platform=usr_platform,
+                                     ext=ext),
+        'aliyun': aliyun_url_template.format(package_ver=version,
+                                             py_ver=py_version,
+                                             platform=usr_platform,
+                                             ext=ext)
+    }
+
+
+def _get_latency(url):
+    req = request.Request(url, method="HEAD")
+    try:
+        start = time.perf_counter()
+        request.urlopen(req, timeout=PING_TIMEOUT)
+        end = time.perf_counter()
+        return end - start
+    except Exception:
+        return 999
+
+
+def get_remote_binary(version):
+    urls = _get_download_urls(version)
+    print('Try ping servers...')
+    s3_time = _get_latency(urls['s3'])
+    aliyun_time = _get_latency(urls['aliyun'])
+    print('s3: {:.3f}s, aliyun: {:.3f}s'.format(s3_time, aliyun_time))
+    url = urls['s3'] if s3_time <= aliyun_time else urls['aliyun']
+    print('Start downloading {}...'.format(url))
+    binary_fp = request.urlopen(url)
+    print('Downloaded {}'.format(url))
+    return binary_fp