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Source code for galaxy.datatypes.blast
# This file is now part of the Galaxy Project, but due to historical reasons
# reflecting time developed outside of the Galaxy Project, this file is under
# the MIT license.
#
# The MIT License (MIT)
# Copyright (c) 2012,2013,2014,2015,2016 Peter Cock
# Copyright (c) 2012 Edward Kirton
# Copyright (c) 2013 Nicola Soranzo
# Copyright (c) 2014 Bjoern Gruening
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
#
"""NCBI BLAST datatypes.
Covers the ``blastxml`` format and the BLAST databases.
"""
import io
import logging
import os
from time import sleep
from galaxy.util import smart_str
from .data import (
Data,
get_file_peek,
Text
)
from .sniff import build_sniff_from_prefix
from .xml import GenericXml
log = logging.getLogger(__name__)
[docs]@build_sniff_from_prefix
class BlastXml(GenericXml):
"""NCBI Blast XML Output data"""
file_ext = "blastxml"
edam_format = "format_3331"
edam_data = "data_0857"
[docs] def set_peek(self, dataset, is_multi_byte=False):
"""Set the peek and blurb text"""
if not dataset.dataset.purged:
dataset.peek = get_file_peek(dataset.file_name)
dataset.blurb = 'NCBI Blast XML data'
else:
dataset.peek = 'file does not exist'
dataset.blurb = 'file purged from disk'
[docs] def sniff_prefix(self, file_prefix):
"""Determines whether the file is blastxml
>>> from galaxy.datatypes.sniff import get_test_fname
>>> fname = get_test_fname('megablast_xml_parser_test1.blastxml')
>>> BlastXml().sniff(fname)
True
>>> fname = get_test_fname('tblastn_four_human_vs_rhodopsin.xml')
>>> BlastXml().sniff(fname)
True
>>> fname = get_test_fname('interval.interval')
>>> BlastXml().sniff(fname)
False
"""
handle = file_prefix.string_io()
line = handle.readline()
if line.strip() != '<?xml version="1.0"?>':
return False
line = handle.readline()
if line.strip() not in ['<!DOCTYPE BlastOutput PUBLIC "-//NCBI//NCBI BlastOutput/EN" "http://www.ncbi.nlm.nih.gov/dtd/NCBI_BlastOutput.dtd">',
'<!DOCTYPE BlastOutput PUBLIC "-//NCBI//NCBI BlastOutput/EN" "NCBI_BlastOutput.dtd">']:
return False
line = handle.readline()
if line.strip() != '<BlastOutput>':
return False
return True
[docs] def merge(split_files, output_file):
"""Merging multiple XML files is non-trivial and must be done in subclasses."""
if len(split_files) == 1:
# For one file only, use base class method (move/copy)
return Text.merge(split_files, output_file)
if not split_files:
raise ValueError("Given no BLAST XML files, %r, to merge into %s"
% (split_files, output_file))
with open(output_file, "w") as out:
h = None
old_header = None
for f in split_files:
if not os.path.isfile(f):
log.warning("BLAST XML file %s missing, retry in 1s..." % f)
sleep(1)
if not os.path.isfile(f):
log.error("BLAST XML file %s missing" % f)
raise ValueError("BLAST XML file %s missing" % f)
h = open(f)
header = h.readline()
if not header:
h.close()
# Retry, could be transient error with networked file system...
log.warning("BLAST XML file %s empty, retry in 1s..." % f)
sleep(1)
h = open(f)
header = h.readline()
if not header:
log.error("BLAST XML file %s was empty" % f)
raise ValueError("BLAST XML file %s was empty" % f)
if header.strip() != '<?xml version="1.0"?>':
out.write(header) # for diagnosis
h.close()
raise ValueError("%s is not an XML file!" % f)
line = h.readline()
header += line
if line.strip() not in ['<!DOCTYPE BlastOutput PUBLIC "-//NCBI//NCBI BlastOutput/EN" "http://www.ncbi.nlm.nih.gov/dtd/NCBI_BlastOutput.dtd">',
'<!DOCTYPE BlastOutput PUBLIC "-//NCBI//NCBI BlastOutput/EN" "NCBI_BlastOutput.dtd">']:
out.write(header) # for diagnosis
h.close()
raise ValueError("%s is not a BLAST XML file!" % f)
while True:
line = h.readline()
if not line:
out.write(header) # for diagnosis
h.close()
raise ValueError("BLAST XML file %s ended prematurely" % f)
header += line
if "<Iteration>" in line:
break
if len(header) > 10000:
# Something has gone wrong, don't load too much into memory!
# Write what we have to the merged file for diagnostics
out.write(header)
h.close()
raise ValueError("The header in BLAST XML file %s is too long" % f)
if "<BlastOutput>" not in header:
h.close()
raise ValueError("%s is not a BLAST XML file:\n%s\n..." % (f, header))
if f == split_files[0]:
out.write(header)
old_header = header
elif old_header is not None and old_header[:300] != header[:300]:
# Enough to check <BlastOutput_program> and <BlastOutput_version> match
h.close()
raise ValueError("BLAST XML headers don't match for %s and %s - have:\n%s\n...\n\nAnd:\n%s\n...\n"
% (split_files[0], f, old_header[:300], header[:300]))
else:
out.write(" <Iteration>\n")
for line in h:
if "</BlastOutput_iterations>" in line:
break
# TODO - Increment <Iteration_iter-num> and if required automatic query names
# like <Iteration_query-ID>Query_3</Iteration_query-ID> to be increasing?
out.write(line)
h.close()
out.write(" </BlastOutput_iterations>\n")
out.write("</BlastOutput>\n")
merge = staticmethod(merge)
class _BlastDb(Data):
"""Base class for BLAST database datatype."""
def set_peek(self, dataset, is_multi_byte=False):
"""Set the peek and blurb text."""
if not dataset.dataset.purged:
dataset.peek = "BLAST database (multiple files)"
dataset.blurb = "BLAST database (multiple files)"
else:
dataset.peek = 'file does not exist'
dataset.blurb = 'file purged from disk'
def display_peek(self, dataset):
"""Create HTML content, used for displaying peek."""
try:
return dataset.peek
except Exception:
return "BLAST database (multiple files)"
def display_data(self, trans, data, preview=False, filename=None,
to_ext=None, size=None, offset=None, **kwd):
"""
If preview is `True` allows us to format the data shown in the central pane via the "eye" icon.
If preview is `False` triggers download.
"""
if not preview:
return super(_BlastDb, self).display_data(trans,
data=data,
preview=preview,
filename=filename,
to_ext=to_ext,
size=size,
offset=offset,
**kwd)
if self.file_ext == "blastdbn":
title = "This is a nucleotide BLAST database"
elif self.file_ext == "blastdbp":
title = "This is a protein BLAST database"
elif self.file_ext == "blastdbd":
title = "This is a domain BLAST database"
else:
# Error?
title = "This is a BLAST database."
msg = ""
try:
# Try to use any text recorded in the dummy index file:
with io.open(data.file_name, "rU", encoding='utf-8') as handle:
msg = handle.read().strip()
except Exception:
pass
if not msg:
msg = title
# Galaxy assumes HTML for the display of composite datatypes,
return smart_str("<html><head><title>%s</title></head><body><pre>%s</pre></body></html>" % (title, msg))
def merge(split_files, output_file):
"""Merge BLAST databases (not implemented for now)."""
raise NotImplementedError("Merging BLAST databases is non-trivial (do this via makeblastdb?)")
def split(cls, input_datasets, subdir_generator_function, split_params):
"""Split a BLAST database (not implemented for now)."""
if split_params is None:
return None
raise NotImplementedError("Can't split BLAST databases")
[docs]class BlastNucDb(_BlastDb, Data):
"""Class for nucleotide BLAST database files."""
file_ext = 'blastdbn'
allow_datatype_change = False
composite_type = 'basic'
[docs] def __init__(self, **kwd):
Data.__init__(self, **kwd)
self.add_composite_file('blastdb.nhr', is_binary=True) # sequence headers
self.add_composite_file('blastdb.nin', is_binary=True) # index file
self.add_composite_file('blastdb.nsq', is_binary=True) # nucleotide sequences
self.add_composite_file('blastdb.nal', is_binary=False, optional=True) # alias ( -gi_mask option of makeblastdb)
self.add_composite_file('blastdb.nhd', is_binary=True, optional=True) # sorted sequence hash values ( -hash_index option of makeblastdb)
self.add_composite_file('blastdb.nhi', is_binary=True, optional=True) # index of sequence hash values ( -hash_index option of makeblastdb)
self.add_composite_file('blastdb.nnd', is_binary=True, optional=True) # sorted GI values ( -parse_seqids option of makeblastdb and gi present in the description lines)
self.add_composite_file('blastdb.nni', is_binary=True, optional=True) # index of GI values ( -parse_seqids option of makeblastdb and gi present in the description lines)
self.add_composite_file('blastdb.nog', is_binary=True, optional=True) # OID->GI lookup file ( -hash_index or -parse_seqids option of makeblastdb)
self.add_composite_file('blastdb.nsd', is_binary=True, optional=True) # sorted sequence accession values ( -hash_index or -parse_seqids option of makeblastdb)
self.add_composite_file('blastdb.nsi', is_binary=True, optional=True) # index of sequence accession values ( -hash_index or -parse_seqids option of makeblastdb)
# self.add_composite_file('blastdb.00.idx', is_binary=True, optional=True) # first volume of the MegaBLAST index generated by makembindex
# The previous line should be repeated for each index volume, with filename extensions like '.01.idx', '.02.idx', etc.
self.add_composite_file('blastdb.shd', is_binary=True, optional=True) # MegaBLAST index superheader (-old_style_index false option of makembindex)
# self.add_composite_file('blastdb.naa', is_binary=True, optional=True) # index of a WriteDB column for e.g. mask data
# self.add_composite_file('blastdb.nab', is_binary=True, optional=True) # data of a WriteDB column
# self.add_composite_file('blastdb.nac', is_binary=True, optional=True) # multiple byte order for a WriteDB column
# The previous 3 lines should be repeated for each WriteDB column, with filename extensions like ('.nba', '.nbb', '.nbc'), ('.nca', '.ncb', '.ncc'), etc.
[docs]class BlastProtDb(_BlastDb, Data):
"""Class for protein BLAST database files."""
file_ext = 'blastdbp'
allow_datatype_change = False
composite_type = 'basic'
[docs] def __init__(self, **kwd):
Data.__init__(self, **kwd)
# Component file comments are as in BlastNucDb except where noted
self.add_composite_file('blastdb.phr', is_binary=True)
self.add_composite_file('blastdb.pin', is_binary=True)
self.add_composite_file('blastdb.psq', is_binary=True) # protein sequences
self.add_composite_file('blastdb.phd', is_binary=True, optional=True)
self.add_composite_file('blastdb.phi', is_binary=True, optional=True)
self.add_composite_file('blastdb.pnd', is_binary=True, optional=True)
self.add_composite_file('blastdb.pni', is_binary=True, optional=True)
self.add_composite_file('blastdb.pog', is_binary=True, optional=True)
self.add_composite_file('blastdb.psd', is_binary=True, optional=True)
self.add_composite_file('blastdb.psi', is_binary=True, optional=True)
# self.add_composite_file('blastdb.paa', is_binary=True, optional=True)
# self.add_composite_file('blastdb.pab', is_binary=True, optional=True)
# self.add_composite_file('blastdb.pac', is_binary=True, optional=True)
# The last 3 lines should be repeated for each WriteDB column, with filename extensions like ('.pba', '.pbb', '.pbc'), ('.pca', '.pcb', '.pcc'), etc.
[docs]class BlastDomainDb(_BlastDb, Data):
"""Class for domain BLAST database files."""
file_ext = 'blastdbd'
allow_datatype_change = False
composite_type = 'basic'
[docs] def __init__(self, **kwd):
Data.__init__(self, **kwd)
self.add_composite_file('blastdb.phr', is_binary=True)
self.add_composite_file('blastdb.pin', is_binary=True)
self.add_composite_file('blastdb.psq', is_binary=True)
self.add_composite_file('blastdb.freq', is_binary=True, optional=True)
self.add_composite_file('blastdb.loo', is_binary=True, optional=True)
self.add_composite_file('blastdb.psd', is_binary=True, optional=True)
self.add_composite_file('blastdb.psi', is_binary=True, optional=True)
self.add_composite_file('blastdb.rps', is_binary=True, optional=True)
self.add_composite_file('blastdb.aux', is_binary=True, optional=True)