Release management using CircleCI (#3498)

* Release management using CircleCI

* Changelog updated

scripts/release_management/sha-files.py

@@ -0,0 +1,35 @@
+#!/usr/bin/env python
+
+# Create SHA256 summaries from all ZIP files in a folder
+# Optimized for CircleCI
+
+import re
+import os
+import argparse
+import zipfile
+import hashlib
+
+
+BLOCKSIZE = 65536
+
+
+if __name__ == "__main__":
+  parser = argparse.ArgumentParser()
+  parser.add_argument("--folder", default="/tmp/workspace", help="Folder to look for, for ZIP files")
+  parser.add_argument("--shafile", default="/tmp/workspace/SHA256SUMS", help="SHA256 summaries File")
+  args = parser.parse_args()
+
+  for filename in os.listdir(args.folder):
+    if re.search('\.zip$',filename) is None:
+      continue
+    if not os.path.isfile(os.path.join(args.folder, filename)):
+      continue
+    with open(args.shafile,'a+') as shafile:
+      hasher = hashlib.sha256()
+      with open(os.path.join(args.folder, filename),'r') as f:
+        buf = f.read(BLOCKSIZE)
+        while len(buf) > 0:
+          hasher.update(buf)
+          buf = f.read(BLOCKSIZE)
+      shafile.write("{0} {1}\n".format(hasher.hexdigest(),filename))  
+