[consutil] Add brief option to show line command (sonic-net#1176)

Signed-off-by: Jing Kan jika@microsoft.com

consutil/lib.py

@@ -61,7 +61,7 @@ def run_command(cmd, abort=True):
     return output if abort else (output, error)
 
 # returns a list of all lines
-def getAllLines():
+def getAllLines(brief=False):
     config_db = ConfigDBConnector()
     config_db.connect()
 
@@ -73,16 +73,17 @@ def getAllLines():
         line[LINE_KEY] = k
         lines.append(line)
 
-    # Querying device directory to get all available console ports 
-    cmd = "ls " + DEVICE_PREFIX + "*"
-    output, _ = run_command(cmd, abort=False)
-    availableTtys = output.split('\n')
-    availableTtys = list(filter(lambda dev: re.match(DEVICE_PREFIX + r"\d+", dev) != None, availableTtys))
-    for tty in availableTtys:
-        k = tty[len(DEVICE_PREFIX):]
-        if k not in keys:
-            line = { LINE_KEY: k }
-            lines.append(line)
+    # Querying device directory to get all available console ports
+    if not brief:
+        cmd = "ls " + DEVICE_PREFIX + "*"
+        output, _ = run_command(cmd, abort=False)
+        availableTtys = output.split('\n')
+        availableTtys = list(filter(lambda dev: re.match(DEVICE_PREFIX + r"\d+", dev) != None, availableTtys))
+        for tty in availableTtys:
+            k = tty[len(DEVICE_PREFIX):]
+            if k not in keys:
+                line = { LINE_KEY: k }
+                lines.append(line)
     return lines
 
 # returns a dictionary of busy lines and their info

consutil/main.py

@@ -25,9 +25,10 @@ def consutil():
 
 # 'show' subcommand
 @consutil.command()
-def show():
-    """Show all lines and their info"""
-    lines = getAllLines()
+@click.option('--brief', '-b', metavar='<brief_mode>', required=False, is_flag=True)
+def show(brief):
+    """Show all lines and their info include available ttyUSB devices unless specified brief mode"""
+    lines = getAllLines(brief)
     busyLines = getBusyLines()
 
     # sort lines for table rendering
@@ -59,7 +60,7 @@ def clear(target):
     """Clear preexisting connection to line"""
     targetLine = getLine(target)
     if not targetLine:
-        click.echo("Target [{}] does not exist".format(linenum))
+        click.echo("Target [{}] does not exist".format(target))
         sys.exit(ERR_DEV)
     lineNumber = targetLine[LINE_KEY]
 

show/main.py

@@ -1827,10 +1827,11 @@ def reboot_cause():
 # 'line' command ("show line")
 #
 @cli.command('line')
+@click.option('--brief', '-b', metavar='<brief_mode>', required=False, is_flag=True)
 @click.option('--verbose', is_flag=True, help="Enable verbose output")
-def line(verbose):
-    """Show all /dev/ttyUSB lines and their info"""
-    cmd = "consutil show"
+def line(brief, verbose):
+    """Show all console lines and their info include available ttyUSB devices unless specified brief mode"""
+    cmd = "consutil show" + (" -b" if brief else "")
     run_command(cmd, display_cmd=verbose)
     return