drop unused daemon.py

Sponsored-by: author

1 files changed, 0 insertions, 84 deletions

diff --git a/subplot/daemon.py b/subplot/daemon.py
deleted file mode 100644
index 0173731..0000000
--- a/subplot/daemon.py
+++ /dev/null
@@ -1,84 +0,0 @@
-#############################################################################
-# Start and stop daemons, or background processes.
-
-
-import logging
-import os
-import signal
-import time
-
-
-# Start a process in the background.
-def start_daemon(ctx, name, argv):
-    runcmd = globals()["runcmd"]
-    exit_code_is = globals()["exit_code_is"]
-
-    logging.debug(f"Starting daemon {name}")
-    logging.debug(f"  ctx={ctx.as_dict()}")
-    logging.debug(f"  name={name}")
-    logging.debug(f"  argv={argv}")
-
-    if "daemon" not in ctx.as_dict():
-        ctx["daemon"] = {}
-    assert name not in ctx["daemon"]
-    this = ctx["daemon"][name] = {
-        "pid-file": f"{name}.pid",
-        "stderr": f"{name}.stderr",
-        "stdout": f"{name}.stdout",
-    }
-    runcmd(
-        ctx,
-        [
-            "/usr/bin/daemonize",  # sbin prior to Debian 11 (bullseye), bin now
-            "-c",
-            os.getcwd(),
-            "-p",
-            this["pid-file"],
-            "-e",
-            this["stderr"],
-            "-o",
-            this["stdout"],
-        ]
-        + argv,
-    )
-
-    # Wait for a bit for daemon to start and maybe find a problem and die.
-    time.sleep(3)
-    if ctx["exit"] != 0:
-        logging.error(f"obnam-server stderr: {ctx['stderr']}")
-
-    exit_code_is(ctx, 0)
-    this["pid"] = int(open(this["pid-file"]).read().strip())
-    assert process_exists(this["pid"])
-
-    logging.debug(f"Started daemon {name}")
-    logging.debug(f"  ctx={ctx.as_dict()}")
-
-
-# Stop a daemon.
-def stop_daemon(ctx, name):
-    logging.debug(f"Stopping daemon {name}")
-    logging.debug(f"  ctx={ctx.as_dict()}")
-    logging.debug(f"  ctx['daemon']={ctx.as_dict()['daemon']}")
-
-    this = ctx["daemon"][name]
-    terminate_process(this["pid"], signal.SIGKILL)
-
-
-# Does a process exist?
-def process_exists(pid):
-    try:
-        os.kill(pid, 0)
-    except ProcessLookupError:
-        return False
-    return True
-
-
-# Terminate process.
-def terminate_process(pid, signalno):
-    logging.debug(f"Terminating process {pid} with signal {signalno}")
-    try:
-        os.kill(pid, signalno)
-    except ProcessLookupError:
-        logging.debug("Process did not actually exist (anymore?)")
-        pass