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# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
"""
BitBake 'Fetch' NPM implementation
The NPM fetcher is used to retrieve files from the npmjs repository
Usage in the recipe:
SRC_URI = "npm://registry.npmjs.org/;name=${PN};version=${PV}"
Suported SRC_URI options are:
- name
- version
npm://registry.npmjs.org/${PN}/-/${PN}-${PV}.tgz would become npm://registry.npmjs.org;name=${PN};ver=${PV}
The fetcher all triggers off the existence of ud.localpath. If that exists and has the ".done" stamp, its assumed the fetch is good/done
"""
import os
import sys
import urllib
import json
import subprocess
import signal
import bb
from bb import data
from bb.fetch2 import FetchMethod
from bb.fetch2 import FetchError
from bb.fetch2 import ChecksumError
from bb.fetch2 import runfetchcmd
from bb.fetch2 import logger
from bb.fetch2 import UnpackError
from bb.fetch2 import ParameterError
from distutils import spawn
def subprocess_setup():
# Python installs a SIGPIPE handler by default. This is usually not what
# non-Python subprocesses expect.
# SIGPIPE errors are known issues with gzip/bash
signal.signal(signal.SIGPIPE, signal.SIG_DFL)
class Npm(FetchMethod):
"""Class to fetch urls via 'npm'"""
def init(self, d):
pass
def supports(self, ud, d):
"""
Check to see if a given url can be fetched with npm
"""
return ud.type in ['npm']
def debug(self, msg):
logger.debug(1, "NpmFetch: %s", msg)
def clean(self, ud, d):
logger.debug(2, "Calling cleanup %s" % ud.pkgname)
bb.utils.remove(ud.localpath, False)
bb.utils.remove(ud.pkgdatadir, True)
bb.utils.remove(ud.fullmirror, False)
def urldata_init(self, ud, d):
"""
init NPM specific variable within url data
"""
if 'downloadfilename' in ud.parm:
ud.basename = ud.parm['downloadfilename']
else:
ud.basename = os.path.basename(ud.path)
# can't call it ud.name otherwise fetcher base class will start doing sha1stuff
# TODO: find a way to get an sha1/sha256 manifest of pkg & all deps
ud.pkgname = ud.parm.get("name", None)
if not ud.pkgname:
raise ParameterError("NPM fetcher requires a name parameter")
ud.version = ud.parm.get("version", None)
if not ud.version:
raise ParameterError("NPM fetcher requires a version parameter")
ud.bbnpmmanifest = "%s-%s.deps.json" % (ud.pkgname, ud.version)
ud.registry = "http://%s" % ud.basename
prefixdir = "npm/%s" % ud.pkgname
ud.pkgdatadir = d.expand("${DL_DIR}/%s" % prefixdir)
if not os.path.exists(ud.pkgdatadir):
bb.utils.mkdirhier(ud.pkgdatadir)
ud.localpath = d.expand("${DL_DIR}/npm/%s" % ud.bbnpmmanifest)
self.basecmd = d.getVar("FETCHCMD_wget", True) or "/usr/bin/env wget -O -t 2 -T 30 -nv --passive-ftp --no-check-certificate "
self.basecmd += " --directory-prefix=%s " % prefixdir
ud.write_tarballs = ((data.getVar("BB_GENERATE_MIRROR_TARBALLS", d, True) or "0") != "0")
ud.mirrortarball = 'npm_%s-%s.tar.xz' % (ud.pkgname, ud.version)
ud.fullmirror = os.path.join(d.getVar("DL_DIR", True), ud.mirrortarball)
def need_update(self, ud, d):
if os.path.exists(ud.localpath):
return False
return True
def _runwget(self, ud, d, command, quiet):
logger.debug(2, "Fetching %s using command '%s'" % (ud.url, command))
bb.fetch2.check_network_access(d, command)
runfetchcmd(command, d, quiet)
def _unpackdep(self, ud, pkg, data, destdir, dldir, d):
file = data[pkg]['tgz']
logger.debug(2, "file to extract is %s" % file)
if file.endswith('.tgz') or file.endswith('.tar.gz') or file.endswith('.tar.Z'):
cmd = 'tar xz --strip 1 --no-same-owner -f %s/%s' % (dldir, file)
else:
bb.fatal("NPM package %s downloaded not a tarball!" % file)
# Change to subdir before executing command
save_cwd = os.getcwd()
if not os.path.exists(destdir):
os.makedirs(destdir)
os.chdir(destdir)
path = d.getVar('PATH', True)
if path:
cmd = "PATH=\"%s\" %s" % (path, cmd)
bb.note("Unpacking %s to %s/" % (file, os.getcwd()))
ret = subprocess.call(cmd, preexec_fn=subprocess_setup, shell=True)
os.chdir(save_cwd)
if ret != 0:
raise UnpackError("Unpack command %s failed with return value %s" % (cmd, ret), ud.url)
if 'deps' not in data[pkg]:
return
for dep in data[pkg]['deps']:
self._unpackdep(ud, dep, data[pkg]['deps'], "%s/node_modules/%s" % (destdir, dep), dldir, d)
def unpack(self, ud, destdir, d):
dldir = d.getVar("DL_DIR", True)
depdumpfile = "%s-%s.deps.json" % (ud.pkgname, ud.version)
with open("%s/npm/%s" % (dldir, depdumpfile)) as datafile:
workobj = json.load(datafile)
dldir = "%s/%s" % (os.path.dirname(ud.localpath), ud.pkgname)
self._unpackdep(ud, ud.pkgname, workobj, "%s/npmpkg" % destdir, dldir, d)
def _getdependencies(self, pkg, data, version, d, ud):
pkgfullname = pkg
if version:
pkgfullname += "@%s" % version
logger.debug(2, "Calling getdeps on %s" % pkg)
fetchcmd = "npm view %s dist.tarball --registry %s" % (pkgfullname, ud.registry)
output = runfetchcmd(fetchcmd, d, True)
# npm may resolve multiple versions
outputarray = output.strip().splitlines()
# we just take the latest version npm resolved
#logger.debug(2, "Output URL is %s - %s - %s" % (ud.basepath, ud.basename, ud.localfile))
outputurl = outputarray[len(outputarray)-1].rstrip()
if (len(outputarray) > 1):
# remove the preceding version/name from npm output and then the
# first and last quotes
outputurl = outputurl.split(" ")[1][1:-1]
data[pkg] = {}
data[pkg]['tgz'] = os.path.basename(outputurl)
self._runwget(ud, d, "%s %s" % (self.basecmd, outputurl), False)
#fetchcmd = "npm view %s@%s dependencies --json" % (pkg, version)
fetchcmd = "npm view %s dependencies --json --registry %s" % (pkgfullname, ud.registry)
output = runfetchcmd(fetchcmd, d, True)
try:
depsfound = json.loads(output)
except:
# just assume there is no deps to be loaded here
return
data[pkg]['deps'] = {}
for dep, version in depsfound.iteritems():
self._getdependencies(dep, data[pkg]['deps'], version, d, ud)
def _getshrinkeddependencies(self, pkg, data, version, d, ud, lockdown, manifest):
logger.debug(2, "NPM shrinkwrap file is %s" % data)
outputurl = "invalid"
if ('resolved' not in data) or (not data['resolved'].startswith('http')):
# will be the case for ${PN}
fetchcmd = "npm view %s@%s dist.tarball --registry %s" % (pkg, version, ud.registry)
logger.debug(2, "Found this matching URL: %s" % str(fetchcmd))
outputurl = runfetchcmd(fetchcmd, d, True)
else:
outputurl = data['resolved']
self._runwget(ud, d, "%s %s" % (self.basecmd, outputurl), False)
manifest[pkg] = {}
manifest[pkg]['tgz'] = os.path.basename(outputurl).rstrip()
manifest[pkg]['deps'] = {}
if pkg in lockdown:
sha1_expected = lockdown[pkg][version]
sha1_data = bb.utils.sha1_file("npm/%s/%s" % (ud.pkgname, manifest[pkg]['tgz']))
if sha1_expected != sha1_data:
msg = "\nFile: '%s' has %s checksum %s when %s was expected" % (manifest[pkg]['tgz'], 'sha1', sha1_data, sha1_expected)
raise ChecksumError('Checksum mismatch!%s' % msg)
else:
logger.debug(2, "No lockdown data for %s@%s" % (pkg, version))
if 'dependencies' in data:
for obj in data['dependencies']:
logger.debug(2, "Found dep is %s" % str(obj))
self._getshrinkeddependencies(obj, data['dependencies'][obj], data['dependencies'][obj]['version'], d, ud, lockdown, manifest[pkg]['deps'])
def download(self, ud, d):
"""Fetch url"""
jsondepobj = {}
shrinkobj = {}
lockdown = {}
if not os.listdir(ud.pkgdatadir) and os.path.exists(ud.fullmirror):
dest = d.getVar("DL_DIR", True)
bb.utils.mkdirhier(dest)
save_cwd = os.getcwd()
os.chdir(dest)
runfetchcmd("tar -xJf %s" % (ud.fullmirror), d)
os.chdir(save_cwd)
return
shwrf = d.getVar('NPM_SHRINKWRAP', True)
logger.debug(2, "NPM shrinkwrap file is %s" % shwrf)
try:
with open(shwrf) as datafile:
shrinkobj = json.load(datafile)
except:
logger.warn('Missing shrinkwrap file in NPM_SHRINKWRAP for %s, this will lead to unreliable builds!' % ud.pkgname)
lckdf = d.getVar('NPM_LOCKDOWN', True)
logger.debug(2, "NPM lockdown file is %s" % lckdf)
try:
with open(lckdf) as datafile:
lockdown = json.load(datafile)
except:
logger.warn('Missing lockdown file in NPM_LOCKDOWN for %s, this will lead to unreproducible builds!' % ud.pkgname)
if ('name' not in shrinkobj):
self._getdependencies(ud.pkgname, jsondepobj, ud.version, d, ud)
else:
self._getshrinkeddependencies(ud.pkgname, shrinkobj, ud.version, d, ud, lockdown, jsondepobj)
with open(ud.localpath, 'w') as outfile:
json.dump(jsondepobj, outfile)
def build_mirror_data(self, ud, d):
# Generate a mirror tarball if needed
if ud.write_tarballs and not os.path.exists(ud.fullmirror):
# it's possible that this symlink points to read-only filesystem with PREMIRROR
if os.path.islink(ud.fullmirror):
os.unlink(ud.fullmirror)
save_cwd = os.getcwd()
os.chdir(d.getVar("DL_DIR", True))
logger.info("Creating tarball of npm data")
runfetchcmd("tar -cJf %s npm/%s npm/%s" % (ud.fullmirror, ud.bbnpmmanifest, ud.pkgname), d)
runfetchcmd("touch %s.done" % (ud.fullmirror), d)
os.chdir(save_cwd)
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