From a8bc9cd0fce3169eccc67b191fdb40abfae59547 Mon Sep 17 00:00:00 2001
From: Eric Wong <normalperson@yhbt.net>
Date: Wed, 31 Oct 2012 19:38:09 +0000
Subject: net-http-persistent usage respects timeouts

We now have separate Net::HTTP::Persistent instances
between clients that may have different timeouts and
also between GET and PUT requests.  This hurts our
ability to reuse sockets, but correctness is probably
more important.
---
 lib/mogilefs/mogilefs.rb | 39 +++++++++++++++++++++++++++++++++------
 1 file changed, 33 insertions(+), 6 deletions(-)

(limited to 'lib/mogilefs/mogilefs.rb')

diff --git a/lib/mogilefs/mogilefs.rb b/lib/mogilefs/mogilefs.rb
index 7503bba..8bab9ef 100644
--- a/lib/mogilefs/mogilefs.rb
+++ b/lib/mogilefs/mogilefs.rb
@@ -69,6 +69,10 @@ class MogileFS::MogileFS < MogileFS::Client
 
     @get_file_data_timeout = args[:get_file_data_timeout] || 5
     @new_file_max_time = args[:new_file_max_time] || 3600.0
+    @nhp_get = MogileFS::NHP.new('get')
+    @nhp_get.open_timeout = @nhp_get.read_timeout = @get_file_data_timeout
+    @nhp_put = MogileFS::NHP.new('put')
+    @nhp_put.open_timeout = @nhp_put.read_timeout = @new_file_max_time
 
     raise ArgumentError, "you must specify a domain" unless @domain
 
@@ -146,17 +150,40 @@ class MogileFS::MogileFS < MogileFS::Client
   # start position of the copy.
   def get_file_data(key, dst = nil, copy_length = nil, src_offset = nil)
     paths = get_paths(key)
-    sock = MogileFS::HTTPReader.first(paths, @get_file_data_timeout,
-                                      copy_length, src_offset)
+    if src_offset || copy_length
+      src_offset ||= 0
+      range_end = copy_length ? src_offset + copy_length - 1 : nil
+      range = [ src_offset, range_end ]
+    end
+
     if dst
+      sock = MogileFS::HTTPReader.first(paths, @get_file_data_timeout, range)
       sock.stream_to(dst)
     elsif block_given?
+      sock = MogileFS::HTTPReader.first(paths, @get_file_data_timeout, range)
       yield(sock)
     else
-      sock.to_s
+      errors = nil
+      paths.each do |path|
+        uri = URI.parse(path)
+        get = Net::HTTP::Get.new(uri.path)
+        get["range"] = "bytes=#{range[0]}-#{range[1]}" if range
+        begin
+          res = @nhp_get.request(uri, get)
+          case res.code.to_i
+          when 200, 206
+            return res.body
+          end
+          (errors ||= []) << "#{path} - #{res.message} (#{res.class})"
+        rescue => e
+          (errors ||= []) << "#{path} - #{e.message} (#{e.class})"
+        end
+      end
+      raise MogileFS::Error,
+            "all paths failed with GET: #{errors.join(', ')}", []
     end
-    ensure
-      sock.close if sock && ! sock.closed?
+  ensure
+    sock.close if sock && ! sock.closed?
   end
 
   # Get the paths (URLs as strings) for +key+.  If +args+ is specified,
@@ -253,7 +280,7 @@ class MogileFS::MogileFS < MogileFS::Client
   #   an array of URI::HTTP objects to the stored destinations
   def new_file(key, args = nil, bytes = nil) # :yields: file
     raise MogileFS::ReadOnlyError if readonly?
-    opts = { :key => key, :multi_dest => 1 }
+    opts = { :key => key, :multi_dest => 1, :nhp_put => @nhp_put }
     case args
     when Hash
       opts[:domain] = args[:domain]
-- 
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