X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/47e59a35d5ed9b2cdb052894d741972324058505..3fa6aa4043286ad61e5f29c136d3cc2942e8750d:/sdk/python/arvados/commands/get.py

diff --git a/sdk/python/arvados/commands/get.py b/sdk/python/arvados/commands/get.py
index 1e52714916..bb421def61 100755
--- a/sdk/python/arvados/commands/get.py
+++ b/sdk/python/arvados/commands/get.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Copyright (C) The Arvados Authors. All rights reserved.
 #
 # SPDX-License-Identifier: Apache-2.0
@@ -17,7 +17,6 @@ import arvados.util as util
 
 from arvados._version import __version__
 
-api_client = None
 logger = logging.getLogger('arvados.arv-get')
 
 parser = argparse.ArgumentParser(
@@ -98,6 +97,15 @@ When getting a collection manifest, strip its access tokens before writing
 it.
 """)
 
+parser.add_argument('--threads', type=int, metavar='N', default=4,
+                    help="""
+Set the number of download threads to be used. Take into account that
+using lots of threads will increase the RAM requirements. Default is
+to use 4 threads.
+On high latency installations, using a greater number will improve
+overall throughput.
+""")
+
 def parse_arguments(arguments, stdout, stderr):
     args = parser.parse_args(arguments)
 
@@ -137,8 +145,6 @@ def parse_arguments(arguments, stdout, stderr):
     return args
 
 def main(arguments=None, stdout=sys.stdout, stderr=sys.stderr):
-    global api_client
-
     if stdout is sys.stdout and hasattr(stdout, 'buffer'):
         # in Python 3, write to stdout as binary
         stdout = stdout.buffer
@@ -149,8 +155,7 @@ def main(arguments=None, stdout=sys.stdout, stderr=sys.stderr):
     request_id = arvados.util.new_request_id()
     logger.info('X-Request-Id: '+request_id)
 
-    if api_client is None:
-        api_client = arvados.api('v1', request_id=request_id)
+    api_client = arvados.api('v1', request_id=request_id)
 
     r = re.search(r'^(.*?)(/.*)?$', args.locator)
     col_loc = r.group(1)
@@ -191,7 +196,9 @@ def main(arguments=None, stdout=sys.stdout, stderr=sys.stderr):
 
     try:
         reader = arvados.CollectionReader(
-            col_loc, api_client=api_client, num_retries=args.retries)
+            col_loc, api_client=api_client, num_retries=args.retries,
+            keep_client=arvados.keep.KeepClient(block_cache=arvados.keep.KeepBlockCache((args.threads+1)*64 * 1024 * 1024)),
+            get_threads=args.threads)
     except Exception as error:
         logger.error("failed to read collection: {}".format(error))
         return 1
@@ -279,7 +286,7 @@ def main(arguments=None, stdout=sys.stdout, stderr=sys.stderr):
                                        if todo_bytes==0
                                        else 100.0*out_bytes/todo_bytes)))
                     elif args.batch_progress:
-                        stderr.write('%s %d read %d total\n' %
+                        stderr.write('%s %d read %d total %d\n' %
                                      (sys.argv[0], os.getpid(),
                                       out_bytes, todo_bytes))
             if digestor: