# Copyright 2013-2024 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
import errno
import gzip
import io
import os
import shutil
import sys
import spack.cmd
import spack.spec
import spack.util.compression as compression
from spack.cmd.common import arguments
from spack.main import SpackCommandError
description = "print out logs for packages"
section = "basic"
level = "long"
[docs]
def setup_parser(subparser):
arguments.add_common_arguments(subparser, ["spec"])
def _dump_byte_stream_to_stdout(instream: io.BufferedIOBase) -> None:
# Reopen stdout in binary mode so we don't have to worry about encoding
outstream = os.fdopen(sys.stdout.fileno(), "wb", closefd=False)
shutil.copyfileobj(instream, outstream)
def _logs(cmdline_spec: spack.spec.Spec, concrete_spec: spack.spec.Spec):
if concrete_spec.installed:
log_path = concrete_spec.package.install_log_path
elif os.path.exists(concrete_spec.package.stage.path):
# TODO: `spack logs` can currently not show the logs while a package is being built, as the
# combined log file is only written after the build is finished.
log_path = concrete_spec.package.log_path
else:
raise SpackCommandError(f"{cmdline_spec} is not installed or staged")
try:
stream = open(log_path, "rb")
except OSError as e:
if e.errno == errno.ENOENT:
raise SpackCommandError(f"No logs are available for {cmdline_spec}") from e
raise SpackCommandError(f"Error reading logs for {cmdline_spec}: {e}") from e
with stream as f:
ext = compression.extension_from_magic_numbers_by_stream(f, decompress=False)
if ext and ext != "gz":
raise SpackCommandError(f"Unsupported storage format for {log_path}: {ext}")
# If the log file is gzip compressed, wrap it with a decompressor
_dump_byte_stream_to_stdout(gzip.GzipFile(fileobj=f) if ext == "gz" else f)
[docs]
def logs(parser, args):
specs = spack.cmd.parse_specs(args.spec)
if not specs:
raise SpackCommandError("You must supply a spec.")
if len(specs) != 1:
raise SpackCommandError("Too many specs. Supply only one.")
concrete_spec = spack.cmd.matching_spec_from_env(specs[0])
_logs(specs[0], concrete_spec)