diff tools/mira4_0/mira4_make_bam.py @ 2:4eb32a3d67d1 draft

v0.0.8 - renamed folder, added note about mirabait
author peterjc
date Wed, 02 Sep 2015 07:46:29 -0400
parents
children 1713289d9908
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/mira4_0/mira4_make_bam.py	Wed Sep 02 07:46:29 2015 -0400
@@ -0,0 +1,92 @@
+#!/usr/bin/env python
+"""Wrapper script using miraconvert & samtools to get BAM from MIRA.
+"""
+import os
+import sys
+import shutil
+import subprocess
+import tempfile
+
+def sys_exit(msg, err=1):
+    sys.stderr.write(msg+"\n")
+    sys.exit(err)
+
+def run(cmd, log_handle):
+    try:
+        child = subprocess.Popen(cmd, shell=True,
+                                 stdout=subprocess.PIPE,
+                                 stderr=subprocess.STDOUT)
+    except Exception, err:
+        sys.stderr.write("Error invoking command:\n%s\n\n%s\n" % (cmd, err))
+        #TODO - call clean up?
+        log_handle.write("Error invoking command:\n%s\n\n%s\n" % (cmd, err))
+        sys.exit(1)
+    #Use .communicate as can get deadlocks with .wait(),
+    stdout, stderr = child.communicate()
+    assert not stderr #Should be empty as sent to stdout
+    if len(stdout) > 10000:
+        #miraconvert can be very verbose (is holding stdout in RAM a problem?)
+        stdout = stdout.split("\n")
+        stdout = stdout[:10] + ["...", "<snip>", "..."] + stdout[-10:]
+        stdout = "\n".join(stdout)
+    log_handle.write(stdout)
+    return child.returncode
+
+def depad(fasta_file, sam_file, bam_file, log_handle):
+    log_handle.write("\n================= Converting MIRA assembly from SAM to BAM ===================\n")
+    #Also doing SAM to (uncompressed) BAM during depad
+    bam_stem = bam_file + ".tmp" # Have write permissions and want final file in this folder
+    cmd = 'samtools depad -S -u -T "%s" "%s" | samtools sort - "%s"' % (fasta_file, sam_file, bam_stem)
+    return_code = run(cmd, log_handle)
+    if return_code:
+        return "Error %i from command:\n%s" % (return_code, cmd)
+    if not os.path.isfile(bam_stem + ".bam"):
+        return "samtools depad or sort failed to produce BAM file"
+
+    log_handle.write("\n====================== Indexing MIRA assembly BAM file =======================\n")
+    cmd = 'samtools index "%s.bam"' % bam_stem
+    return_code = run(cmd, log_handle)
+    if return_code:
+        return "Error %i from command:\n%s" % (return_code, cmd)
+    if not os.path.isfile(bam_stem + ".bam.bai"):
+        return "samtools indexing of BAM file failed to produce BAI file"
+
+    shutil.move(bam_stem + ".bam", bam_file)
+    os.remove(bam_stem + ".bam.bai") #Let Galaxy handle that...
+
+
+def make_bam(mira_convert, maf_file, fasta_file, bam_file, log_handle):
+    if not os.path.isfile(mira_convert):
+        return "Missing binary %r" % mira_convert
+    if not os.path.isfile(maf_file):
+        return "Missing input MIRA file: %r" % maf_file
+    if not os.path.isfile(fasta_file):
+        return "Missing padded FASTA file: %r" % fasta_file
+
+    log_handle.write("\n====================== Converting MIRA assembly to SAM =======================\n")
+    tmp_dir = tempfile.mkdtemp()
+    sam_file = os.path.join(tmp_dir, "x.sam")
+
+    # Note add nbb to the template name, possible MIRA 4.0 RC4 bug
+    cmd = '"%s" -f maf -t samnbb "%s" "%snbb"' % (mira_convert, maf_file, sam_file)
+    return_code = run(cmd, log_handle)
+    if return_code:
+        return "Error %i from command:\n%s" % (return_code, cmd)
+    if not os.path.isfile(sam_file):
+        return "Conversion from MIRA to SAM failed"
+
+    #Also doing SAM to (uncompressed) BAM during depad
+    msg = depad(fasta_file, sam_file, bam_file, log_handle)
+    if msg:
+        return msg
+
+    os.remove(sam_file)
+    os.rmdir(tmp_dir)
+
+    return None #Good :)
+
+if __name__ == "__main__":
+    mira_convert, maf_file, fasta_file, bam_file = sys.argv[1:]
+    msg = make_bam(mira_convert, maf_file, fasta_file, bam_file, sys.stdout)
+    if msg:
+        sys_exit(msg)