Monday, May 27, 2013
Wednesday, May 22, 2013
SimpleHTTPPutServer in python
Sometimes a small HTTP server which can be used with
Python's own SimpleHTTPServer is a simple webserver, but it only supports GET and HEAD requests.
By simply deriving from that class you can create a small server supporting PUT.
$ curl -T dafile dahost.localis handy. You can use it to upload small logfiles etc without any authentication, so something like tftp.
Python's own SimpleHTTPServer is a simple webserver, but it only supports GET and HEAD requests.
By simply deriving from that class you can create a small server supporting PUT.
Sunday, May 5, 2013
Mozilla's rust in Fedora's PPA Copr
Copr is Fedora's answer to Ubuntu's PPA - IIUIC, so don't nail me on the definition.
Slavek give's a nice introduction into how Copr works and what it does.
Now - Copr can be used to create public repositories for 3rd-party packages like rust - which can not (yet) land in the official Fedora repos (in rusts's case because of the bundling other libs).
I had to uploaded a source rpm of rust and point Copr to it, so Copr can pick it up and do a chroot build.
Best is that Copr is also creating the appropriate repository and you only need the following repo file to install rust with dnf or yum.
In general Copr seems to be nice - it's still abit rough around the edges, but that's expected. It can surely imagine that t's going to fit well into our existing infrastructure.
[Update] The copr landing page for rust and the package rust-0.6-2.fc18.x86_64.rpm link.
Slavek give's a nice introduction into how Copr works and what it does.
Now - Copr can be used to create public repositories for 3rd-party packages like rust - which can not (yet) land in the official Fedora repos (in rusts's case because of the bundling other libs).
I had to uploaded a source rpm of rust and point Copr to it, so Copr can pick it up and do a chroot build.
Best is that Copr is also creating the appropriate repository and you only need the following repo file to install rust with dnf or yum.
# Add the following repo file $ cat rust.repo [fabiand-rust-unofficial] name=Rust packages (unofficial) baseurl=http://copr-be.cloud.fedoraproject.org/results/fabiand/rust/ enabled=1 metadata_expire=7d gpgcheck=0 # And install it $ sudo dnf install rust
In general Copr seems to be nice - it's still abit rough around the edges, but that's expected. It can surely imagine that t's going to fit well into our existing infrastructure.
[Update] The copr landing page for rust and the package rust-0.6-2.fc18.x86_64.rpm link.
ORBX.js - is no open codec
I'm by no way an expert, but until now ORBX.js is - to me - not much more than a tech demo and not "the future".
ORBX seems to be a propietary video codec, which operates highly parallel - that there is ORBX.js - a javascript decoder for this codec - doesn't help the fact that it's proprietary. So I wonder what the fuzz is all about. As said: To me ORBX.js is currently not much more than a tech demo to illustrate JavaScript's (or more it's interpreters) capabilities. And currently I couldn't find any hint that ORBX - the codec - is going to be opened - which is also not as easy, as this would involve some sort of patent audit to sort out it's patent status.
At last I at least like the fact that it's now shown that there can be highly parallel video codecs, which can utilize the GPU from a high level language.
I wonder if this can be done with Dirac.
Thursday, May 2, 2013
Parallel static python checks with Makefiles
To make testing fun I looked at improving the speed of static syntax checks.
The latest incarnation is now using make targets to represent a specific checks. The nice thing about this is, that you can use Make's
-j
switch to run those tests in parallel.So basically it looks like this:
check-static-pep8: $(PYTHONSOURCES:%=%.pep8) @echo Passed $@ %.pep8: PYTHONPATH=. pep8 -r "$*"
The complete makefile is here and the numbers:
Simple:
... --- Passed check-local --- real 0m22.875s user 0m20.466s sys 0m2.158s
And in parallel:
--- Passed check-local --- real 0m11.459s user 0m34.780s sys 0m3.325s
There is so much that can be done.
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