--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/data_manager/data_manager_diamond_database_builder.py	Sun Feb 08 10:05:20 2015 -0500
@@ -0,0 +1,238 @@
+#!/usr/bin/env python
+import sys
+import os
+import tempfile
+import shutil
+import optparse
+import urllib2
+import subprocess
+from ftplib import FTP
+import tarfile
+import zipfile
+import gzip
+import bz2
+
+from galaxy.util.json import from_json_string, to_json_string
+
+CHUNK_SIZE = 2**20 #1mb
+
+def cleanup_before_exit( tmp_dir ):
+    if tmp_dir and os.path.exists( tmp_dir ):
+        shutil.rmtree( tmp_dir )
+
+
+def stop_err(msg):
+    sys.stderr.write(msg)
+    sys.exit(1)
+
+
+def _get_files_in_ftp_path( ftp, path ):
+    path_contents = []
+    ftp.retrlines( 'MLSD %s' % ( path ), path_contents.append )
+    return [ line.split( ';' )[ -1 ].lstrip() for line in path_contents ]
+
+
+def _get_stream_readers_for_tar( file_obj, tmp_dir ):
+    fasta_tar = tarfile.open( fileobj=file_obj, mode='r:*' )
+    return [ fasta_tar.extractfile( member ) for member in fasta_tar.getmembers() ]
+
+
+def _get_stream_readers_for_zip( file_obj, tmp_dir ):
+    fasta_zip = zipfile.ZipFile( file_obj, 'r' )
+    rval = []
+    for member in fasta_zip.namelist():
+        fasta_zip.extract( member, tmp_dir )
+        rval.append( open( os.path.join( tmp_dir, member ), 'rb' ) )
+    return rval
+
+
+def _get_stream_readers_for_gzip( file_obj, tmp_dir ):
+    return [ gzip.GzipFile( fileobj=file_obj, mode='rb' ) ]
+
+
+def _get_stream_readers_for_bz2( file_obj, tmp_dir ):
+    return [ bz2.BZ2File( file_obj.name, 'rb' ) ]
+
+
+def download_from_ncbi( data_manager_dict, params, target_directory, database_id, database_name ):
+    NCBI_FTP_SERVER = 'ftp.ncbi.nlm.nih.gov'
+    NCBI_DOWNLOAD_PATH = '/blast/db/FASTA/'
+    COMPRESSED_EXTENSIONS = [ ( '.tar.gz', _get_stream_readers_for_tar ), ( '.tar.bz2', _get_stream_readers_for_tar ), ( '.zip', _get_stream_readers_for_zip ), ( '.gz', _get_stream_readers_for_gzip ), ( '.bz2', _get_stream_readers_for_bz2 ) ]
+
+    ncbi_identifier = params['param_dict']['reference_source']['requested_identifier']
+    ftp = FTP( NCBI_FTP_SERVER )
+    ftp.login()
+
+    path_contents = _get_files_in_ftp_path( ftp, NCBI_DOWNLOAD_PATH )
+
+    ncbi_file_name = None
+    get_stream_reader = None
+    ext = None
+    for ext, get_stream_reader in COMPRESSED_EXTENSIONS:
+        if "%s%s" % ( ncbi_identifier, ext ) in path_contents:
+            ncbi_file_name = "%s%s%s" % ( NCBI_DOWNLOAD_PATH, ncbi_identifier, ext )
+            break
+
+    if not ncbi_file_name:
+        raise Exception( 'Unable to determine filename for NCBI database for %s: %s' % ( ncbi_identifier, path_contents ) )
+
+    tmp_dir = tempfile.mkdtemp( prefix='tmp-data-manager-ncbi-' )
+    ncbi_fasta_filename = os.path.join( tmp_dir, "%s%s" % ( ncbi_identifier, ext ) )
+    
+    fasta_base_filename = "%s.fa" % database_id
+    fasta_filename = os.path.join( target_directory, fasta_base_filename )
+    fasta_writer = open( fasta_filename, 'wb+' )
+    
+    tmp_extract_dir = os.path.join ( tmp_dir, 'extracted_fasta' )
+    os.mkdir( tmp_extract_dir )
+    
+    tmp_fasta = open( ncbi_fasta_filename, 'wb+' )
+    
+    ftp.retrbinary( 'RETR %s' % ncbi_file_name, tmp_fasta.write )
+    
+    tmp_fasta.flush()
+    tmp_fasta.seek( 0 )
+    
+    fasta_readers = get_stream_reader( tmp_fasta, tmp_extract_dir )
+    
+    data_table_entry = _stream_fasta_to_file( fasta_readers, target_directory, database_id, database_name, params )
+    _add_data_table_entry( data_manager_dict, data_table_entry )
+    
+    for fasta_reader in fasta_readers:
+        fasta_reader.close()
+    tmp_fasta.close()
+    cleanup_before_exit( tmp_dir )
+
+
+def download_from_url( data_manager_dict, params, target_directory, database_id, database_name ):
+    #TODO: we should automatically do decompression here
+    urls = filter( bool, map( lambda x: x.strip(), params['param_dict']['reference_source']['user_url'].split( '\n' ) ) )
+    fasta_reader = [ urllib2.urlopen( url ) for url in urls ]
+    
+    data_table_entry = _stream_fasta_to_file( fasta_reader, target_directory, database_id, database_name, params )
+    _add_data_table_entry( data_manager_dict, data_table_entry )
+
+
+def download_from_history( data_manager_dict, params, target_directory, database_id, database_name ):
+    #TODO: allow multiple FASTA input files
+    input_filename = params['param_dict']['reference_source']['input_fasta']
+    if isinstance( input_filename, list ):
+        fasta_reader = [ open( filename, 'rb' ) for filename in input_filename ]
+    else:
+        fasta_reader = open( input_filename )
+    
+    data_table_entry = _stream_fasta_to_file( fasta_reader, target_directory, database_id, database_name, params )
+    _add_data_table_entry( data_manager_dict, data_table_entry )
+
+
+def copy_from_directory( data_manager_dict, params, target_directory, database_id, database_name ):
+    input_filename = params['param_dict']['reference_source']['fasta_filename']
+    create_symlink = params['param_dict']['reference_source']['create_symlink'] == 'create_symlink'
+    if create_symlink:
+        data_table_entry = _create_symlink( input_filename, target_directory, database_id, database_name )
+    else:
+        if isinstance( input_filename, list ):
+            fasta_reader = [ open( filename, 'rb' ) for filename in input_filename ]
+        else:
+            fasta_reader = open( input_filename )    
+        data_table_entry = _stream_fasta_to_file( fasta_reader, target_directory, database_id, database_name, params )
+    _add_data_table_entry( data_manager_dict, data_table_entry )
+
+
+def _add_data_table_entry( data_manager_dict, data_table_entry ):
+    data_manager_dict['data_tables'] = data_manager_dict.get( 'data_tables', {} )
+    data_manager_dict['data_tables']['diamond_database'] = data_manager_dict['data_tables'].get( 'diamond_database', [] )
+    data_manager_dict['data_tables']['diamond_database'].append( data_table_entry )
+    return data_manager_dict
+
+
+def _stream_fasta_to_file( fasta_stream, target_directory, database_id, database_name, params, close_stream=True ):
+    fasta_base_filename = "%s.fa" % database_id
+    fasta_filename = os.path.join( target_directory, fasta_base_filename )
+
+    temp_fasta = tempfile.NamedTemporaryFile( delete=False, suffix=".fasta" )
+    temp_fasta.close()
+    fasta_writer = open( temp_fasta.name, 'wb+' )
+
+    if isinstance( fasta_stream, list ) and len( fasta_stream ) == 1:
+        fasta_stream = fasta_stream[0]
+
+    if isinstance( fasta_stream, list ):
+        last_char = None
+        for fh in fasta_stream:
+            if last_char not in [ None, '\n', '\r' ]:
+                fasta_writer.write( '\n' )
+            while True:
+                data = fh.read( CHUNK_SIZE )
+                if data:
+                    fasta_writer.write( data )
+                    last_char = data[-1]
+                else:
+                    break
+            if close_stream:
+                fh.close()
+    else:
+        while True:
+            data = fasta_stream.read( CHUNK_SIZE )
+            if data:
+                fasta_writer.write( data )
+            else:
+                break
+        if close_stream:
+            fasta_stream.close()
+
+    fasta_writer.close()
+
+    args = [ 'diamond', 'makedb', '--in', temp_fasta.name, '--db', fasta_filename]
+
+    tmp_stderr = tempfile.NamedTemporaryFile( prefix = "tmp-data-manager-diamond-database-builder-stderr" )
+    proc = subprocess.Popen( args=args, shell=False, cwd=target_directory, stderr=tmp_stderr.fileno() )
+    return_code = proc.wait()
+    if return_code:
+        tmp_stderr.flush()
+        tmp_stderr.seek(0)
+        print >> sys.stderr, "Error building diamond database:"
+        while True:
+            chunk = tmp_stderr.read( CHUNK_SIZE )
+            if not chunk:
+                break
+            sys.stderr.write( chunk )
+        sys.exit( return_code )
+    tmp_stderr.close()
+    os.remove( temp_fasta.name )
+    return dict( value=database_id, name=database_name, db_path="%s.dmnd" % fasta_base_filename )
+
+
+def _create_symlink( input_filename, target_directory, database_id, database_name ):
+    fasta_base_filename = "%s.fa" % database_id
+    fasta_filename = os.path.join( target_directory, fasta_base_filename )
+    os.symlink( input_filename, fasta_filename )
+    return dict( value=database_id, name=database_name, db_path=fasta_base_filename )
+
+
+REFERENCE_SOURCE_TO_DOWNLOAD = dict( ncbi=download_from_ncbi, url=download_from_url, history=download_from_history, directory=copy_from_directory )
+
+def main():
+    #Parse Command Line
+    parser = optparse.OptionParser()
+    parser.add_option( '-d', '--dbkey_description', dest='dbkey_description', action='store', type="string", default=None, help='dbkey_description' )
+    (options, args) = parser.parse_args()
+    
+    filename = args[0]
+    
+    params = from_json_string( open( filename ).read() )
+    target_directory = params[ 'output_data' ][0]['extra_files_path']
+    os.mkdir( target_directory )
+    data_manager_dict = {}
+
+    database_id = params['param_dict']['database_id']
+    database_name = params['param_dict']['database_name']
+
+    #Fetch the FASTA
+    REFERENCE_SOURCE_TO_DOWNLOAD[ params['param_dict']['reference_source']['reference_source_selector'] ]( data_manager_dict, params, target_directory, database_id, database_name )
+    
+    #save info to json file
+    open( filename, 'wb' ).write( to_json_string( data_manager_dict ) )
+
+if __name__ == "__main__":
+    main()