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22
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1 #!/usr/bin/python
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2
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3 import argparse
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4 import logging
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5 import os
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6 import re
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7 import shutil
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8 import subprocess
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9 import sys
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10 import tempfile
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11
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12 def exit_and_explain(msg):
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13 logging.critical(msg)
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14 sys.exit(msg)
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15
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16 def cleanup_before_exit(tmp_dir):
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17 if tmp_dir and os.path.exists(tmp_dir):
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18 shutil.rmtree(tmp_dir)
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19
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20 def get_arg():
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21 parser = argparse.ArgumentParser()
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22 parser.add_argument('--project_name', dest='project_name', action='store', nargs=1, metavar='project_name', type=str)
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23 #Input 1: Annotation File
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24 parser.add_argument('--index', dest='indexes', action='store', nargs=2, metavar=('stranded_index_filename', 'unstranded_index_filename'), type=str)
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25 parser.add_argument('--bi_index', dest='bi_indexes', action='store', nargs=1, metavar='built_in_indexes_dir_path', type=str )
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26 parser.add_argument('--annotation', dest='annotation_file', action='store', nargs=1, metavar='annotation_gtf_file', type=str )
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27 #Input 2: Mapped Reads
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28 parser.add_argument('--reads_format', dest='reads_format', action='store', nargs=1, choices=['bam', 'bedgraph'], metavar='reads_format', type=str)
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29 parser.add_argument('--reads', dest='reads', action='store', nargs='+', metavar=('bam_file1 label1',""), type=str)
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30 parser.add_argument('--strandness', dest='strandness', action='store', nargs=1, default=['unstranded'], choices=['unstranded', 'forward', 'reverse'], metavar='strandness', type=str)
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31 #Output files
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32 parser.add_argument('--output_pdf', dest='output_pdf', action='store', nargs=1, metavar='output_pdf_filename', type=str)
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33 parser.add_argument('--output_svg', dest='output_svg', action='store', nargs=2, metavar=('categories_svg_filename', 'biotypes_svg_filename'), type=str)
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34 parser.add_argument('--output_png', dest='output_png', action='store', nargs=2, metavar=('categories_png_filename', 'biotypes_png_filename'), type=str)
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35 parser.add_argument('--output_count', dest='output_count', action='store', nargs=1, metavar='output_count_filename', type=str)
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36 parser.add_argument('--output_index', dest='output_indexes', action='store', nargs=2, metavar=('output_stranded_index_filename', 'output_unstranded_index_filename'), type=str)
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37 #Output Options
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38 parser.add_argument('--categories_depth', dest='categories_depth', action='store', nargs=1, default=[3], choices=range(1,5), metavar='categories_depth', type=int)
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39 parser.add_argument('--plot_format', dest='plot_format', action='store', nargs=1, choices=['pdf', 'png', 'svg'], metavar='plot_format', type=str)
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40 parser.add_argument('--threshold', dest='threshold', action='store', nargs=2, metavar=('yMin', 'yMax'), type=float)
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41 #Internal variables
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42 parser.add_argument('--log_report', dest='log_report', action='store', nargs=1, metavar='log_filename', type=str)
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43 parser.add_argument('--tool_dir', dest='GALAXY_TOOL_DIR', action='store', nargs=1, metavar='galaxy_tool_dir_path', type=str)
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44 args = parser.parse_args()
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45 return args
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46
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28
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47 def symlink_user_indexes(stranded_index, unstranded_index):
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22
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48 index='index'
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28
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49 os.symlink(stranded_index, index + '.stranded.index')
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50 os.symlink(unstranded_index, index + '.unstranded.index')
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22
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51 return index
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52
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53 def get_input2_args(reads_list, format):
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54 n = len(reads_list)
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55 if n%2 != 0:
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56 exit_and_explain('Problem with pairing reads filename and reads label')
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57 input2_args='-i'
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30
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58 k = 0
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22
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59 reads_filenames = [''] * (n/2)
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60 reads_labels = [''] * (n/2)
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61 for i in range(0, n, 2):
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62 reads_filenames[k] = reads_list[i].split('__fname__')[1]
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31
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63 cur_label = reads_list[i+1].split('__label__')[1]
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64 reads_labels[k] = re.sub(r' ', '_', cur_label)
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22
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65 if not reads_labels[k]:
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66 reads_labels[k] = 'sample_%s' % str(k)
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67 input2_args='%s "%s" "%s"' % (input2_args, reads_filenames[k], reads_labels[k])
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68 k += 1
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69 if format == 'bedgraph':
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70 input2_args = input2_args + ' --bedgraph'
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71 return input2_args, reads_filenames, reads_labels
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72
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73 def redirect_errors(alfa_out, alfa_err):
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74 # When the option --n is enabled, alfa prints '### End of the program' in stderr even if the process worked-
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75 # The following lines to avoid the tool from crashing in this case
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76 if alfa_err and not re.search('### End of program', alfa_err):
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77 # When alfa prints '### End of program' in stdout, all the messages in stderr are considered
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78 # as warnings and not as errors.
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79 if re.search('### End of program', alfa_out):
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80 logging.warning("The script ALFA.py encountered the following warning:\n\n%s" % alfa_err)
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81 logging.info("\n******************************************************************\n")
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82 # True errors make the script exits
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83 else:
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84 exit_and_explain("The script ALFA.py encountered the following error:\n\n%s" % alfa_err)
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85
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86 def merge_count_files(reads_labels):
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87 merged_count_file = open('count_file.txt', 'wb')
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88 for i in range(0, len(reads_labels)):
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89 current_count_file = open('%s.categories_counts' % reads_labels[i], 'r')
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90 merged_count_file.write('##LABEL: %s\n\n' % reads_labels[i])
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91 merged_count_file.write(current_count_file.read())
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92 merged_count_file.write('__________________________________________________________________\n')
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93 current_count_file.close()
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94 merged_count_file.close()
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95 return 'count_file.txt'
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96
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97 def main():
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98 args = get_arg()
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99
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100 if not (args.output_pdf or args.output_png or args.output_svg or args.output_indexes or args.output_count):
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101 exit_and_explain('Error: no output to return\nProcess Aborted\n')
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102 tmp_dir = tempfile.mkdtemp(prefix='tmp', suffix='')
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103 logging.basicConfig(level=logging.INFO, filename=args.log_report[0], filemode="a+", format='%(message)s')
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104 alfa_path = os.path.join(args.GALAXY_TOOL_DIR[0], 'ALFA.py')
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105
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106 #INPUT1: Annotation File
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107 if args.indexes:
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108 # The indexes submitted by the user must exhibit the suffix '.(un)stranded.index' and will be called by alfa by their prefix
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109 index = symlink_user_indexes(args.indexes[0], args.indexes[1])
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110 input1_args = '-g "%s"' % index
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111 elif args.bi_indexes:
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112 input1_args = '-g "%s"' % args.bi_indexes[0]
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113 elif args.annotation_file:
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114 input1_args = '-a "%s"' % args.annotation_file[0]
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115 else:
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116 exit_and_explain('No annotation file submitted !')
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117
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118 #INPUT 2: Mapped Reads
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119 if args.reads:
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120 input2_args, reads_filenames, reads_labels = get_input2_args(args.reads, args.reads_format[0])
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121 strandness = '-s %s' % args.strandness[0]
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122 else:
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123 exit_and_explain('No reads submitted !')
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124
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125 ##Output options
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126 categories_depth = '-d %s' % args.categories_depth[0]
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127 if not (args.output_pdf or args.output_png or args.output_svg):
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128 output_args = '--n'
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129 else:
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130 if args.output_pdf:
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131 output_args = '--pdf plot.pdf'
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132 if args.output_png:
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133 output_args = '--png plot'
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134 if args.output_svg:
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135 output_args = '--svg plot'
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136 if args.threshold:
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137 output_args = '%s -t %.3f %.3f' % (output_args, args.threshold[0], args.threshold[1])
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138
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139 ##Run alfa
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140 cmd = 'python %s %s %s %s %s %s' % (alfa_path, input1_args, input2_args, strandness, categories_depth, output_args)
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141 logging.info("__________________________________________________________________\n")
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142 logging.info("Alfa execution")
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143 logging.info("__________________________________________________________________\n")
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144 logging.info("Command Line:\n%s\n" % cmd)
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145 logging.info("------------------------------------------------------------------\n")
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146 alfa_result = subprocess.Popen(args=cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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147 alfa_out, alfa_err = alfa_result.communicate()
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148
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149 ##Handle stdout, warning, errors...
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150 redirect_errors(alfa_out, alfa_err)
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151
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152 logging.info("Alfa prompt:\n%s" % alfa_out)
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153
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154 ##Redirect outputs
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155 if args.output_pdf:
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156 shutil.move('plot.pdf', args.output_pdf[0])
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157 if args.output_png:
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158 shutil.move('plot' + '.categories.png', args.output_png[0])
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159 shutil.move('plot' + '.biotypes.png', args.output_png[1])
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160 if args.output_svg:
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161 shutil.move('plot' + '.categories.svg', args.output_svg[0])
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162 shutil.move('plot' + '.biotypes.svg', args.output_svg[1])
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163 if args.output_count:
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164 count_filename = merge_count_files(reads_labels)
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165 shutil.move(count_filename, args.output_count[0])
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166 if args.output_indexes:
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167 if args.annotation_file:
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168 indexes_regex = re.compile('.*\.index')
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169 indexes = filter(indexes_regex.search, os.listdir('.'))
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170 indexes.sort()
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171 shutil.move(indexes[0], args.output_indexes[0])
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172 shutil.move(indexes[1], args.output_indexes[1])
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173 if args.indexes:
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174 shutil.move(index + '.stranded.index', args.output_indexes[0])
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175 shutil.move(index + '.unstranded.index', args.output_indexes[1])
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176 if args.bi_indexes:
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177 shutil.move(args.bi_indexes[0] + '.stranded.index', args.output_index[0])
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178 shutil.move(args.bi_indexes[1] + '.unstranded.index', args.output_index[1])
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179
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180 cleanup_before_exit(tmp_dir)
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181 main()
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