dvc: check updates and warn about using an older version

Fixes #687

Signed-off-by: Ruslan Kuprieiev <[email protected]>

dvc/__init__.py

@@ -5,7 +5,8 @@ Make your data science projects reproducible and shareable.
 """
 import os
 
-__version__ = '0.9.6'
+VERSION_BASE = '0.9.6'
+__version__ = VERSION_BASE
 
 PACKAGEPATH = os.path.abspath(os.path.dirname(__file__))
 HOMEPATH = os.path.dirname(PACKAGEPATH)

dvc/check_updates.py

@@ -0,0 +1,30 @@
+from github import Github
+
+from dvc import VERSION_BASE
+from dvc.logger import Logger
+
+GITHUB_USER = 'dataversioncontrol'
+GITHUB_REPO = 'dvc'
+
+def check_updates():
+    current = VERSION_BASE
+
+    try:
+        gh = Github()
+        user = gh.get_user(GITHUB_USER)
+        repo = user.get_repo(GITHUB_REPO)
+        latest = repo.get_latest_release().title
+    except Exception as exc:
+        Logger.debug('Failed to obtain latest version: {}'.format(str(exc)))
+        return
+
+    l_major, l_minor, l_patch = latest.split('.')
+    c_major, c_minor, c_patch = current.split('.')
+
+    if l_major <= c_major and \
+       l_minor <= c_minor and \
+       l_patch <= c_patch:
+           return
+
+    msg = 'You are using dvc version {}, however version {} is available. Consider upgrading.'
+    Logger.warn(msg.format(current, latest))

dvc/project.py

@@ -17,6 +17,7 @@ from dvc.scm import SCM, Base
 from dvc.cache import Cache
 from dvc.cloud.data_cloud import DataCloud
 from dvc.system import System
+from dvc.check_updates import check_updates
 
 
 class InitError(DvcException):
@@ -52,6 +53,8 @@ class Project(object):
         self.logger = Logger(self.config._config[Config.SECTION_CORE].get(Config.SECTION_CORE_LOGLEVEL, None))
         self.cloud = DataCloud(cache=self.cache, config=self.config._config)
 
+        check_updates()
+
     @staticmethod
     def init(root_dir=os.curdir, no_scm=False):
         """

requirements.txt

@@ -20,3 +20,4 @@ paramiko>=2.4.1
 binaryornot==0.4.4
 jsonpath-rw==1.4.0
 reflink==0.2.0
+PyGithub>=1.39

setup.py

@@ -26,6 +26,7 @@ install_requires = [
     "binaryornot==0.4.4",
     "jsonpath-rw==1.4.0",
     "reflink==0.2.0",
+    "PyGithub>=1.39",
 ]
 
 setup(