portusctl: fixed the location of crono logs

Since we don't daemonize it, crono's logs are sent to stdout. Since we manage
it with systemd, logs are accessible through journalctl, not on
/srv/Portus/log/crono.log.

Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>

packaging/suse/portusctl/lib/cli.rb

@@ -136,6 +136,7 @@ def logs(*args)
     ensure_root
 
     Runner.produce_versions_file!
+    Runner.produce_crono_log_file!
     Runner.tar_files("log/production.log", "log/crono.log", "log/versions.log")
   end
 

packaging/suse/portusctl/lib/runner.rb

@@ -2,12 +2,17 @@
 class Runner
   # Run a simple external command
   def self.exec(cmd, args = [])
-    final_cmd = cmd + " " + args.map { |a| Shellwords.escape(a) }.join(" ")
+    final_cmd = Runner.escape_command(cmd, args)
     unless system(final_cmd)
       raise "Something went wrong while invoking: #{final_cmd}"
     end
   end
 
+  # Returns a string containing the command with its arguments all escaped.
+  def self.escape_command(cmd, args = [])
+    cmd + " " + args.map { |a| Shellwords.escape(a) }.join(" ")
+  end
+
   # Run an external command using the bundler binary shipped with Portus' RPM
   def self.bundler_exec(cmd, args, extra_env_variables)
     Dir.chdir(PORTUS_ROOT) do
@@ -42,6 +47,15 @@ def self.produce_versions_file!
     end
   end
 
+  # Creates a new file called "crono.log" with the logs stored by systemd about
+  # crono.
+  def self.produce_crono_log_file!
+    File.open(File.join(PORTUS_ROOT, "log/crono.log"), "w+") do |file|
+      cmd = Runner.escape_command("journalctl", ["--no-pager", "-u", "portus_crono"])
+      file.puts(`#{cmd}`)
+    end
+  end
+
   # Tar and compress the given files into the /tmp directory. It's assumed that
   # these files are located inside of PORTUS_ROOT.
   def self.tar_files(*files)