On Mon, Jun 2, 2014 at 12:26 PM, Alex Harui <aha...@adobe.com> wrote:
> I think you misunderstood. Cygwin is only needed to build the installer, > not use/run it. > > Ah okay. Then no objections from my side. It is reasonable to expect the Release Managers to have Cygwin installed. Thanks, Om > Workers won't help. It may leave the UI as responsive, but you still have > to wait several minutes for the checksum to be completed. > > MD5 is totally async in the installer today. What isn't is the unzip. It > makes the MD5 look like it is stuck, but it isn't. > > > On 6/2/14 12:06 PM, "OmPrakash Muppirala" <bigosma...@gmail.com> wrote: > > >On Mon, Jun 2, 2014 at 12:00 PM, Alex Harui <aha...@adobe.com> wrote: > > > >> As you may have seen, I've added a bunch of MD5 checksums to the > >>installer > >> in hopes of detecting bad downloads and reporting them to the tracker so > >> we can see if bad downloads is the root cause of many of the install > >> failures that have been reported. > >> > >> The current built-in MD5Stream, written in AS, is extremely slow for > >>large > >> downloads like the AIR SDK. On my Mac, the CPU is up around 95% or even > >> 100% and still it takes several minutes. I spent the weekend figuring > >>out > >> how to do the MD5 in CrossBridge. It takes only a few seconds to > >>compute > >> the checksum. > >> > >> I think it is worth adding CrossBridge as a build prerequisite to the > >> Installer. This will not affect SDK builds. Note that, for Windows > >>builds > >> of the installer, it will require Cygwin. What do others think? > >> > >> Thanks, > >> -Alex > >> > >> > >-1 for Cygwin requirement on Windows. Cygwin is a pain to setup and > >maintain and we definitely dont want end users to jump through this > >barrier > >to get up and running with Apache Flex. It would defeat the whole point > >of > >the ease of use of the Installer. > > > >Couple of options I can think of: > >1. Use a NativeProcess like we use for untar on Macs? We can ship the > >native process file along with the AIR installer if needed. > > > >2. Use AS3 Workers to do the MD5 check while still maintaining the UI > >responsive. > > > >3. One thing I always wanted to trouble shoot was - the current MD5 util > >we are using is supposed to be async, i.e. we can keep calculating the MD5 > >while the file is getting downloaded. For some reason, that does not seem > >to be happening. Maybe you can check what is going on there? > > > >Thanks, > >Om > >
