From 5ba97ad556728c5a74aa86b1d18b98f4ad5e38a9 Mon Sep 17 00:00:00 2001
From: Christopher Baines <mail@cbaines.net>
Date: Sun, 1 Jul 2018 09:02:14 +0100
Subject: Use the remote host struct in read_json_file

---
 lib/shell_utils.rb | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/lib/shell_utils.rb b/lib/shell_utils.rb
index 75ee3ca..b426e44 100644
--- a/lib/shell_utils.rb
+++ b/lib/shell_utils.rb
@@ -73,15 +73,27 @@ module ShellUtils
 
   def read_json_file(filename, from_remote_host: nil)
     if from_remote_host
+      identity_file = Tempfile.new(
+        'private-identity-file',
+        Rails.root.join('tmp')
+      )
+      identity_file.write(from_remote_host.private_key)
+      identity_file.close
+
       command = [
         'ssh',
-        from_remote_host,
+        from_remote_host.user_at_address,
+        # Use a automatically trust on first use model
+        '-o', 'StrictHostKeyChecking=no',
+        '-i', identity_file.path,
         'cat',
         filename
       ]
 
       stdout_str, status = Open3.capture2(*command)
 
+      identity_file.unlink if identity_file
+
       unless status.exitstatus == 0
         logger.error(self.class) { "failed, exit status #{exit_status}" }
 
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