vmsdk: fix eventlog cli (#95)

* change cli logic according to get_cc_eventlog() output
* edit docs describing get_cc_eventlog() usage

Signed-off-by: Ruoyu Ying <ruoyu.ying@intel.com>

README.md

@@ -204,9 +204,10 @@ count = 5
 
 event_logs = CCTrustedVmSdk.inst().get_cc_eventlog(start, count)
     if event_logs is not None:
-        LOG.info("Total %d of event logs fetched.", len(event_logs.event_logs))
+        LOG.info("Total %d of event logs fetched.", len(event_logs))
         # Dump event as formatted
-        event_logs.dump(is_raw=false)
+        for event in event_logs:
+            event_logs.dump()
 ```
 
 Run [cc_event_log_cli.py](vmsdk/python/cc_event_log_cli.py) to execute the sample.
@@ -215,7 +216,7 @@ Run [cc_event_log_cli.py](vmsdk/python/cc_event_log_cli.py) to execute the sampl
 $ sudo su
 # source setupenv.sh
 # cd vmsdk/python
-# python3 cc_event_log_cli.py [-s <start_index_of_event_log>] [-c <count_of_event_logs>] [--out-format-raw <true/false>]
+# python3 cc_event_log_cli.py [-s <start_index_of_event_log>] [-c <count_of_event_logs>]
 ```
 
 Below is the description of the output of `get_cc_eventlog` API on Intel® TDX via VM SDK. Full event logs can be found in [API usage example](docs/API-usage-example.md).

docs/API-usage-example.md

@@ -151,7 +151,7 @@ Following are the boot-time event log collected by [VMSDK's sample code](/vmsdk/
 Please refer the event logs collected in container with runtime IMA part at [CCNP's sample output within Container](https://github.com/intel/confidential-cloud-native-primitives/blob/main/docs/sample-output-for-node-measurement-tool-full.txt)
 
 ```
-$ python3 vmsdk/python/cc_event_log_cli.py --out-format-raw false
+$ python3 vmsdk/python/cc_event_log_cli.py
 cctrusted_vm.cvm DEBUG    Successful open device node /dev/tdx_guest
 cctrusted_vm.cvm DEBUG    Successful read TDREPORT from /dev/tdx_guest.
 cctrusted_vm.cvm DEBUG    Successful parse TDREPORT.

vmsdk/python/cc_event_log_cli.py

@@ -28,17 +28,13 @@ def main():
                         help='index of first event log to fetch', dest='start')
     parser.add_argument("-c", type=int, help="number of event logs to fetch",
                         dest="count")
-    parser.add_argument("--out-format-raw", default=True,
-                        dest="out_format",
-                        help="output format. Return raw when set as True.\
-                              Return parsed info when set as False.",
-                        type=lambda x: (str(x).lower() in ['true','1', 'yes']))
     args = parser.parse_args()
 
     event_logs = CCTrustedVmSdk.inst().get_cc_eventlog(args.start, args.count)
     if event_logs is not None:
-        LOG.info("Total %d of event logs fetched.", len(event_logs.event_logs))
-        event_logs.dump(args.out_format)
+        LOG.info("Total %d of event logs fetched.", len(event_logs))
+        for event in event_logs:
+            event.dump()
 
 if __name__ == "__main__":
     main()