Seed generator for both nd280 and HK jobs

src/HKComp/HKTools/scripts/seedGenerator.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+
+from hashlib import sha1
+
+def GetRandomSeed(run='', subrun='', stage='', hexbits=8, model='', test = False):
+    """ Get a random seed from has of run + subrun + stage, nBits"""
+    run = str(run)
+    subrun = str(subrun)
+    stage = str(stage)
+    model = str(model)
+    combine = (run+subrun+stage+model).encode()
+    print('Making seed from:  ', combine)
+    h = sha1(combine)
+    # .encode will use UTF-8 if not specified
+    """
+    32 bit unsigned integer -> 8 hexbits:
+           max = 0xFFFFFFFF = 2^32-1 = 4294967295 : nd280Control  (10)
+    32 bit signed   integer -> 7 hexbits:
+           max = 0xFFFFFFF = 2^31-1 = 268435455  : nd280MC, neut  (9)
+    """
+    bits = int(h.hexdigest()[:hexbits], 16)
+
+    if(test):
+        print('(run+subrun+stage+model).encode()               ', (run+subrun+stage+model).encode() )
+        print('h = sha1((run+subrun+stage+model).encode())     ' , (sha1((run+subrun+stage+model).encode()) ) )
+        print('h.hexdigest()                             ', h.hexdigest() )
+        print('h.hexdigest()[:hexbits]                   ', h.hexdigest()[:hexbits] )
+        print('int(h.hexdigest()[:hexbits], 16)          ', int(h.hexdigest()[:hexbits], 16) , '\n')
+
+    print( 'Random seed for ' + run + ' ' + subrun + ' ' + stage + ' ' + model + ' is ' + str(bits) )
+    return bits
+
+
+
+# Useful to have this as a script, as we often need to know the seed to be able to replicate and bug hunt locally
+# And if the grid job fails, you don't always have the logs to grab the info.
+if __name__ == "__main__":
+
+    GetRandomSeed('90410000', '0044', 'agh', 8, '', True)
+    GetRandomSeed('2', '44', 'wcs', 7, 'warren2020_NO_10kpc_a1.25_m10.5', True)