test cronjob; example registry file; find_by_hash method

README.md

@@ -20,6 +20,15 @@ registry = hcRegistry(cred, '/var/lib/hcregistry.json')
 
 h = hc(cred)
 h.print_status()
+
+# scan jobs that want to use SCH
+jobs = CronTabs().all.find_command('JOB_ID')
+for job in jobs:
+    print("job:")
+    print(job)
+    hc_id = registry.get_id(job)
+    print(hc_id)
+    print("--------------")
 ```
 
 And run it within the virtual environment

doc/hcregistry.json

+[
+  {
+    "JOB_ID": "false1",
+    "HC_ID": "c6078292-6ae8-43b5-a23e-9068e2f400ad",
+    "hash": "7fd04f078e7ec8c20d0fa5c0a7d7e7cd"
+  },
+  {
+    "JOB_ID": "false2",
+    "HC_ID": "c6078292-6ae8-43b5-a23e-9068e2f400ad",
+    "hash": "6f99db84b1563cbc9002ef7dbc9b48da"
+  }
+]

doc/testcrontab

+# Sample cron file that does almost nothing 
+# some comment
+1 0 * * * root JOB_ID=false1 /bin/false
+2 0 * * * root JOB_ID=false2 /bin/false

hc.py

@@ -3,6 +3,8 @@ import requests
 import click
 import arrow
 import json
+import hashlib
+import platform
 
 
 class hcCred:
@@ -29,6 +31,28 @@ class hcRegistry:
         except Exception:
             print("could not load registry")
 
+    def get_hash(self, job):
+        md5 = hashlib.md5()
+        md5.update(platform.node().encode('utf-8'))
+        md5.update(str(job.slices).encode('utf-8'))
+        md5.update(job.command.encode('utf-8'))
+        return md5.hexdigest()
+
+    def find_by_hash(self, job):
+        h = self.get_hash(job)
+        return next((elem for elem in self.data if elem['hash'] == h), False)
+
+    def find_by_job_id(self, job):
+        pass
+
+    def get_id(self, job):
+        r = self.find_by_hash(job)
+        if r:
+            return r['HC_ID']
+
+        # r = self.find_by_job_id(job)
+        return False
+
     def register(self, id):
         pass