Cleans content of each found directory when unpacking a new java_vm.
Fixes the problem when java_wm was build using standard jar.
For pack200 this remains unresolved.
Typical use case is a security patch, were a new java patch
(java_windows.jar) is put on server side and java_min_version updated
accordingly in getdown.txt
Currently the new virtual machine will be downloaded only after
a second getdown launch. This pull request fixes this.
We were already doing this for bootstrap.properties-based launches, but there's
no reason to restrict it to that. If you run Getdown with an appbase and an
appdir, it can create the app dir and download the app into it.
This enables scenarios where getdown is installed to a shared location and
users that run the app install it in their private storage area (or on a
machine local file system, or who knows).
Closes#163.
- Max concurrent downloads is controlled by a config in getdown.txt:
max_concurrent_downloads. It defaults to two.
- A bunch of thread-safety problems were fixed.
- While in there, I revamped the downloader to be less crufty from years of
ad-hoc requirements accretion.
- I disabled the Channel.transferFrom based download change because it prevents
fine-grained feedback (and abort checking) from taking place, and it doesn't
handle failure cases. Maybe we'll clean it up and re-enable it in the future.
There's no longer a single jar file to talk about, and sending people to the
directory saves us from having to update README every time we do a release.
Fixes#152
The new code is more careful about how it obtains config info, and issues
warnings when sources of info conflict. It does not abort in such circumstances
as Getdown's prime directive is to do the best it can to get the app updated
and launched. But the warnings will hopefully allow accidental conflicts to be
detected and avoided before being deployed to customers.
We also now allow bootstrap.properties to provide an appid; that matches what
was possible via system properties and command line arguments. We also avoid
"communicating" environment configuration through the Java system properties
mechanism. We now read from sysprops but do not write back to them.
Lastly, this includes some name tidying (like appdir -> appDir and
getAppdir -> getAppDir).
Apologies for messing with code after the fact, but some OOPisms are just too
much for me to stomach. This should just be a function of two arguments. No
objects required.
Yes, we're now reparsing the whitelist on every call, but this function is
called only a handful of times.
Michael Bayne