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comparison macs2_wrapper.py @ 0:49777e347e25 draft

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author modencode-dcc
date Fri, 18 Jan 2013 09:47:22 -0500
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1 #purpose: macs2 python wrapper
2 #author: Ziru Zhou
3 #date: November, 2012
4
5 import sys, subprocess, tempfile, shutil, glob, os, os.path, gzip
6 from galaxy import eggs
7 import pkg_resources
8 pkg_resources.require( "simplejson" )
9 import simplejson
10
11 CHUNK_SIZE = 1024
12
13 #==========================================================================================
14 #functions
15 #==========================================================================================
16 def gunzip_cat_glob_path( glob_path, target_filename, delete = False ):
17 out = open( target_filename, 'wb' )
18 for filename in glob.glob( glob_path ):
19 fh = gzip.open( filename, 'rb' )
20 while True:
21 data = fh.read( CHUNK_SIZE )
22 if data:
23 out.write( data )
24 else:
25 break
26 fh.close()
27 if delete:
28 os.unlink( filename )
29 out.close()
30
31 def xls_to_interval( xls_file, interval_file, header = None ):
32 out = open( interval_file, 'wb' )
33 if header:
34 out.write( '#%s\n' % header )
35 wrote_header = False
36 #From macs readme: Coordinates in XLS is 1-based which is different with BED format.
37 for line in open( xls_file ):
38 #keep all existing comment lines
39 if line.startswith( '#' ):
40 out.write( line )
41 #added for macs2 since there is an extra newline
42 elif line.startswith( '\n' ):
43 out.write( line )
44 elif not wrote_header:
45 out.write( '#%s' % line )
46 print line
47 wrote_header = True
48 else:
49 fields = line.split( '\t' )
50 if len( fields ) > 1:
51 fields[1] = str( int( fields[1] ) - 1 )
52 out.write( '\t'.join( fields ) )
53 out.close()
54
55 #==========================================================================================
56 #main
57 #==========================================================================================
58 def main():
59 #take in options file and output file names
60 options = simplejson.load( open( sys.argv[1] ) )
61 outputs = simplejson.load( open( sys.argv[2] ) )
62
63 #=================================================================================
64 #parse options and execute macs2
65 #=================================================================================
66 #default inputs that are in every major command
67 experiment_name = '_'.join( options['experiment_name'].split() ) #save experiment name here, it will be used by macs for some file names
68 cmdline = "macs2 %s -t %s" % ( options['command'], ",".join( options['input_chipseq'] ) )
69 if options['input_control']:
70 cmdline = "%s -c %s" % ( cmdline, ",".join( options['input_control'] ) )
71
72 #=================================================================================
73 if (options['command'] == "callpeak"):
74 output_bed = outputs['output_bed_file']
75 output_extra_html = outputs['output_extra_file']
76 output_extra_path = outputs['output_extra_file_path']
77 output_peaks = outputs['output_peaks_file']
78 output_narrowpeaks = outputs['output_narrowpeaks_file']
79 output_xls_to_interval_peaks_file = outputs['output_xls_to_interval_peaks_file']
80 output_xls_to_interval_negative_peaks_file = outputs['output_xls_to_interval_negative_peaks_file']
81
82 if 'pvalue' in options:
83 cmdline = "%s --format='%s' --name='%s' --gsize='%s' --bw='%s' --pvalue='%s' --mfold %s %s %s %s" % ( cmdline, options['format'], experiment_name, options['gsize'], options['bw'], options['pvalue'], options['mfoldlo'], options['mfoldhi'], options['nolambda'], options['bdg'] )
84 elif 'qvalue' in options:
85 cmdline = "%s --format='%s' --name='%s' --gsize='%s' --bw='%s' --qvalue='%s' --mfold %s %s %s %s" % ( cmdline, options['format'], experiment_name, options['gsize'], options['bw'], options['qvalue'], options['mfoldlo'], options['mfoldhi'], options['nolambda'], options['bdg'] )
86
87 if 'nomodel' in options:
88 cmdline = "%s --nomodel --shiftsize='%s'" % ( cmdline, options['nomodel'] )
89 #=================================================================================
90 if (options['command'] == "bdgcmp"):
91 output_bdgcmp = outputs['output_bdgcmp_file']
92
93 cmdline = "%s -m %s -p %s -o bdgcmp_out.bdg" % ( cmdline, options['m'], options['pseudocount'] )
94 #=================================================================================
95
96 tmp_dir = tempfile.mkdtemp() #macs makes very messy output, need to contain it into a temp dir, then provide to user
97 stderr_name = tempfile.NamedTemporaryFile().name # redirect stderr here, macs provides lots of info via stderr, make it into a report
98 proc = subprocess.Popen( args=cmdline, shell=True, cwd=tmp_dir, stderr=open( stderr_name, 'wb' ) )
99 proc.wait()
100 #We don't want to set tool run to error state if only warnings or info, e.g. mfold could be decreased to improve model, but let user view macs log
101 #Do not terminate if error code, allow dataset (e.g. log) creation and cleanup
102 if proc.returncode:
103 stderr_f = open( stderr_name )
104 while True:
105 chunk = stderr_f.read( CHUNK_SIZE )
106 if not chunk:
107 stderr_f.close()
108 break
109 sys.stderr.write( chunk )
110
111 #=================================================================================
112 #copy files created by macs2 to appripriate directory with the provided names
113 #=================================================================================
114
115 #=================================================================================
116 #move files generated by callpeak command
117 if (options['command'] == "callpeak"):
118 #run R to create pdf from model script
119 if os.path.exists( os.path.join( tmp_dir, "%s_model.r" % experiment_name ) ):
120 cmdline = 'R --vanilla --slave < "%s_model.r" > "%s_model.r.log"' % ( experiment_name, experiment_name )
121 proc = subprocess.Popen( args=cmdline, shell=True, cwd=tmp_dir )
122 proc.wait()
123
124 #move bed out to proper output file
125 created_bed_name = os.path.join( tmp_dir, "%s_peaks.bed" % experiment_name )
126 if os.path.exists( created_bed_name ):
127 shutil.move( created_bed_name, output_bed )
128
129 #OICR peak_xls file
130 created_peak_xls_file = os.path.join( tmp_dir, "%s_peaks.xls" % experiment_name )
131 if os.path.exists( created_peak_xls_file ):
132 # shutil.copy( created_peak_xls_file, os.path.join ( "/mnt/galaxyData/tmp/", "%s_peaks.xls" % ( os.path.basename(output_extra_path) )))
133 shutil.copyfile( created_peak_xls_file, output_peaks )
134
135 #peaks.encodepeaks (narrowpeaks) file
136 created_narrowpeak_file = os.path.join (tmp_dir, "%s_peaks.encodePeak" % experiment_name )
137 if os.path.exists( created_narrowpeak_file ):
138 shutil.move (created_narrowpeak_file, output_narrowpeaks )
139
140 #parse xls files to interval files as needed
141 #if 'xls_to_interval' in options:
142 if (options['xls_to_interval'] == "True"):
143 create_peak_xls_file = os.path.join( tmp_dir, '%s_peaks.xls' % experiment_name )
144 if os.path.exists( create_peak_xls_file ):
145 xls_to_interval( create_peak_xls_file, output_xls_to_interval_peaks_file, header = 'peaks file' )
146 create_peak_xls_file = os.path.join( tmp_dir, '%s_negative_peaks.xls' % experiment_name )
147 if os.path.exists( create_peak_xls_file ):
148 print "negative file exists"
149 xls_to_interval( create_peak_xls_file, output_xls_to_interval_negative_peaks_file, header = 'negative peaks file' )
150
151 #move all remaining files to extra files path of html file output to allow user download
152 out_html = open( output_extra_html, 'wb' )
153 out_html.write( '<html><head><title>Additional output created by MACS (%s)</title></head><body><h3>Additional Files:</h3><p><ul>\n' % experiment_name )
154 os.mkdir( output_extra_path )
155 for filename in sorted( os.listdir( tmp_dir ) ):
156 shutil.move( os.path.join( tmp_dir, filename ), os.path.join( output_extra_path, filename ) )
157 out_html.write( '<li><a href="%s">%s</a></li>\n' % ( filename, filename ) )
158 #out_html.write( '<li><a href="%s">%s</a>peakxls %s SomethingDifferent tmp_dir %s path %s exp_name %s</li>\n' % ( created_peak_xls_file, filename, filename, tmp_dir, output_extra_path, experiment_name ) )
159 out_html.write( '</ul></p>\n' )
160 out_html.write( '<h3>Messages from MACS:</h3>\n<p><pre>%s</pre></p>\n' % open( stderr_name, 'rb' ).read() )
161 out_html.write( '</body></html>\n' )
162 out_html.close()
163
164 #=================================================================================
165 #move files generated by bdgcmp command
166 if (options['command'] == "bdgcmp"):
167 created_bdgcmp_file = os.path.join (tmp_dir, "bdgcmp_out.bdg" )
168 if os.path.exists( created_bdgcmp_file ):
169 shutil.move (created_bdgcmp_file, output_bdgcmp )
170
171 #=================================================================================
172 #cleanup
173 #=================================================================================
174 os.unlink( stderr_name )
175 os.rmdir( tmp_dir )
176
177 if __name__ == "__main__": main()