From 5daf9f5fe82df591ff553e430414cc797664ce27 Mon Sep 17 00:00:00 2001
From: Pedro Alvarez <pedro.alvarez@codethink.co.uk>
Date: Sun, 13 Mar 2016 17:46:08 +0000
Subject: finish PoC of uploading artifacts with paramiko

Change-Id: Iddbc8cf3b7c4a1ee3e6a8ed7c7c88399639e7363
---
 gear/worker.py | 62 ++++++++++++++++++++++++++--------------------------------
 1 file changed, 28 insertions(+), 34 deletions(-)

diff --git a/gear/worker.py b/gear/worker.py
index 8b782be5..40c142b8 100644
--- a/gear/worker.py
+++ b/gear/worker.py
@@ -6,6 +6,7 @@ worker.registerFunction("build-graph")
 worker.registerFunction("build-artifact")
 import time
 import json
+import os
 from subprocess import Popen, PIPE, STDOUT
 
 import distbuild
@@ -21,41 +22,36 @@ def ssh_manager(host, port, username, key):
     '''
     returns -> ssh connection ready to be used
     '''
-    connected = False
 
-    t = paramiko.Transport((host, port))
-use client?? http://docs.paramiko.org/en/1.16/api/client.html
-    t.start_client()
+    client = paramiko.client.SSHClient()
+    client.load_host_keys(key)
+    client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
+    client.connect(host, port=port)
 
     try:
-        ki = paramiko.RSAKey.from_private_key_file(key)
-    except Exception, e:
-        print 'Failed loading' % (key, e)
-        raise e
-
-    agent = paramiko.Agent()
-    agent_keys = agent.get_keys() + (ki,)
-    if len(agent_keys) == 0:
-        print 'No agent keys found in %s!!' % (key)
-        return
-
-    for key in agent_keys:
-        print 'Trying ssh-agent key %s' % key.get_fingerprint().encode('hex'),
-        try:
-            t.auth_publickey(username, key)
-            print '... success!'
-            connected = True
-            continue
-        except paramiko.SSHException, e:
-            print '... failed!', e
-
-    try:
-        if connected:
-            yield t
-        else:
-            yield False
+        yield client
     finally:
-        t.close()
+        client.close()
+
+def upload_files(cache_key, suffixes):
+    print "DEBUG: start upload_files"
+    cache_dir = '/src/cache/artifacts'
+    remote_cache_dir = '/src/cache_server/'
+    files_to_upload = [os.path.join(cache_dir, cache_key + '.' + suffix) for suffix in suffixes]
+    with ssh_manager('127.0.0.1', 22, 'root', '/root/gerritbot/gerritbot_rsa') as client:
+        sftp = client.open_sftp()
+        for single_file in files_to_upload:
+            remote_dest = os.path.join(remote_cache_dir, os.path.basename(single_file))
+            print "DEBUG: going to upload %s" % single_file
+            print "DEBUG: upload destination %s" % remote_dest
+            # TODO: atomic upload!! sftp.rename(remotePath+'/tmp/'+fileName, remotePath+fileName)
+            try:
+                sftp.stat(remote_dest)
+                print "DEBUG: file already exists"
+                return
+            except:
+                print "DEBUG: file not found in cache, uploading"
+                sftp.put(single_file, remote_dest)
 
 while True:
     print "DEBUG: Waiting for job"
@@ -103,9 +99,7 @@ while True:
 
             if kind == 'stratum':
                 suffixes.append(filename + '.meta')
-        
-        with ssh_manager('localhost', 22, 'root', '/root/gerritbot/gerritbot_rsa') as conn:
-            print conn
+        upload_files(artifact.cache_key, suffixes)
         job.sendWorkComplete(artifact.cache_key)
 
 
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