CIS: ftp transfer API implemented

[living-lab-site.git] / cis / api / file_transfer.py

diff --git a/cis/api/file_transfer.py b/cis/api/file_transfer.py
new file mode 100644 (file)
index 0000000..5a6ff01
--- /dev/null
+++ b/cis/api/file_transfer.py
@@ -0,0 +1,73 @@
+#!/usr/bin/env python
+
+"""
+Classes that facilitate file transfer (between Web Server and CIS).
+
+They may extend BaseFileTransferer class.
+"""
+
+import sys
+from ftplib import FTP_TLS
+import base
+import ftp_config
+import socket
+import api_exceptions
+import os
+
+
+class FTPFileTransferer(base.BaseFileTransferer):
+    """
+    FTPS implementation for file transfering between Web Server and CIS.
+    """
+
+    ftp = None
+
+    def __init__(self, local_path='', remote_path=''):
+        base.BaseFileTransferer.__init__(self, local_path, remote_path)
+
+        self.ftp = FTP_TLS(ftp_config.FTP_HOST, ftp_config.FTP_USER,
+                ftp_config.FTP_PASSWD, ftp_config.FTP_ACCT)
+        self.ftp.set_pasv(True)
+
+    def get(self, files):
+        for crt_file in files:
+            crt_file = os.path.join(self.local_path, crt_file)
+            try:
+                file_local = open(crt_file, 'wb')
+            except IOError as e:
+                raise api_exceptions.FileTransferException( \
+                        "Could not open local file '%s' for writing: %s" \
+                        % (crt_file, repr(e)))
+
+            try:
+                self.ftp.cwd(self.remote_path)
+                self.ftp.retrbinary('RETR %s' % crt_file, file_local.write)
+                file_local.close()
+            except ftplib.error_perm as e:
+                raise api_exceptions.FileTransferException( \
+                        "Could not get file '%s' from Web Server: %s" \
+                        % (crt_file, repr(e)))
+
+    def put(self, files):
+        for crt_file in files:
+            crt_file = os.path.join(self.local_path, crt_file)
+
+            try:
+                file_local = open(crt_file, 'rb')
+            except IOError as e:
+                raise api_exceptions.FileTransferException( \
+                        "Could not open local file '%s' for reading: %s" \
+                        % (crt_file, repr(e)))
+                
+            try:
+                self.ftp.cwd(self.remote_path)
+                self.ftp.storbinary('STOR %s' % crt_file, file_local)
+                file_local.close()
+            except ftplib.error_perm as e:
+                raise api_exceptions.FileTransferException( \
+                        "Could not get file '%s' from Web Server: %s" \
+                        % (crt_file, repr(e)))
+
+    def close(self):
+        if self.ftp is not None:
+            self.ftp.quit()