Skip to content

Google Summer of Code 2020 - Intermediate status update

The three PostgreSQL projects for this year’s Google Summer of Code are on track, and making good progress. All projects expect to finish on time.

Performance Farm

The data gathering for performance farm members is completed, as well as the new implementation for the JSON data transfer. The project iteratively updated it’s goals, and adjusted for newly identified UI issues.

Current work centers around making the website more pretty and useful, as well as reducing the number of used JavaScript libraries. The next step is presenting the work to the PostgreSQL Community for broader feedback.


PL/Java build system

The PL/Java project has just merged (PR #288) the first major pull request of new code from GSoC, creating a new plugin for the Maven build system that allows its actions to be guided by script snippets clearly exposed in the build files.

The same effect was formerly achieved by a workable but brittle combination of an existing Maven plugin that could handle most of the build requirements with another plugin that was able to run Ant, which was able to run scripts. That resulted in a non-ideal division of labor, where a good deal of build logic was hidden away inside plugins, while some parts were exposed in script out of necessity, rather than because they were interesting or likely to need adjustment.

This pull request proves the concept of a new plugin where the hardcoded Java portions are the uninteresting building blocks, and the overall logic of the build is clearly exposed in script.

For now, the new plugin is used to retire the maven-javadoc-plugin and remove the constraints it had imposed on the project's javadocs (such as the need for absolute URLs for intermodule references, making the resulting tree hard to preview or relocate).

Work continues to reimplement the C native build and retire the nar-maven-plugin and maven-antrun-plugin, to be delivered in a future PR.


WAL-G Performance

We’ve just completed the decoupling of the complex WAL-G internal class. Thanks to it, the new functionality developed in July for a more intelligent backup creation process can now be safely integrated. This feature involves major changes so it requires time to verify that everything is working as expected. We plan to finish the integration in parallel with working on other features.

Currently, we are working on merging the new series of commands for the WAL archives that have been uploaded to storage. These commands will allow end users to analyze the storage for any missing WAL segments that may prevent performing a PITR. Also, Dan now is in the process of implementing the last feature and he expects to finish it on time.


Thanks to all mentors for the status update!

  • Twitter
  • Bookmark Google Summer of Code 2020 - Intermediate status update at del.icio.us
  • Facebook
  • Google Bookmarks
  • FriendFeed
  • Digg Google Summer of Code 2020 - Intermediate status update
  • Bloglines Google Summer of Code 2020 - Intermediate status update
  • Technorati Google Summer of Code 2020 - Intermediate status update
  • Fark this: Google Summer of Code 2020 - Intermediate status update
  • Bookmark Google Summer of Code 2020 - Intermediate status update at YahooMyWeb
  • Bookmark Google Summer of Code 2020 - Intermediate status update at Furl.net
  • Bookmark Google Summer of Code 2020 - Intermediate status update at reddit.com
  • Bookmark Google Summer of Code 2020 - Intermediate status update at blinklist.com
  • Bookmark Google Summer of Code 2020 - Intermediate status update at Spurl.net
  • Bookmark Google Summer of Code 2020 - Intermediate status update at Simpy.com
  • Bookmark Google Summer of Code 2020 - Intermediate status update at blogmarks
  • Bookmark Google Summer of Code 2020 - Intermediate status update with wists
  • wong it!
  • Bookmark using any bookmark manager!
  • Stumble It!
  • Identi.ca

Unterwegs auf Kuba (offline)

2019 war ich auf Kuba, für eine Konferenz welche dort stattgefunden hat.

Bei der Vorbereitung der Reise stellte sich heraus dass der Internetzugang im Land einerseits langsam ist, und nicht gut ausgebaut. Und andererseits dass der mobile Internetzugang über Roaming obszön teuer ist. Es war also abzusehen dass ich eine Woche ohne mobiles Internet auskommen muss, und demzufolge auch ohne online Navigation. Vorbereitungen waren notwendig.

 

Continue reading "Unterwegs auf Kuba (offline)"
  • Twitter
  • Bookmark Unterwegs auf Kuba (offline) at del.icio.us
  • Facebook
  • Google Bookmarks
  • FriendFeed
  • Digg Unterwegs auf Kuba (offline)
  • Bloglines Unterwegs auf Kuba (offline)
  • Technorati Unterwegs auf Kuba (offline)
  • Fark this: Unterwegs auf Kuba (offline)
  • Bookmark Unterwegs auf Kuba (offline) at YahooMyWeb
  • Bookmark Unterwegs auf Kuba (offline) at Furl.net
  • Bookmark Unterwegs auf Kuba (offline) at reddit.com
  • Bookmark Unterwegs auf Kuba (offline) at blinklist.com
  • Bookmark Unterwegs auf Kuba (offline) at Spurl.net
  • Bookmark Unterwegs auf Kuba (offline) at Simpy.com
  • Bookmark Unterwegs auf Kuba (offline) at blogmarks
  • Bookmark Unterwegs auf Kuba (offline) with wists
  • wong it!
  • Bookmark using any bookmark manager!
  • Stumble It!
  • Identi.ca

openHAB, Telegram Bot and quoting URLs

A while ago I integrated DWD warnings (Deutscher Wetterdienst) into our home automation system, and receive severe weather notifications ever since then. That works quite good, but it was missing a weblink with more details - or if you want to forward the warning to someone it would be useful to have a link to the warning as well. The DWD binding does not provide that piece of information, but it is easy enough to add - or so I thought.

 

Continue reading "openHAB, Telegram Bot and quoting URLs"
  • Twitter
  • Bookmark openHAB, Telegram Bot and quoting URLs at del.icio.us
  • Facebook
  • Google Bookmarks
  • FriendFeed
  • Digg openHAB, Telegram Bot and quoting URLs
  • Bloglines openHAB, Telegram Bot and quoting URLs
  • Technorati openHAB, Telegram Bot and quoting URLs
  • Fark this: openHAB, Telegram Bot and quoting URLs
  • Bookmark openHAB, Telegram Bot and quoting URLs at YahooMyWeb
  • Bookmark openHAB, Telegram Bot and quoting URLs at Furl.net
  • Bookmark openHAB, Telegram Bot and quoting URLs at reddit.com
  • Bookmark openHAB, Telegram Bot and quoting URLs at blinklist.com
  • Bookmark openHAB, Telegram Bot and quoting URLs at Spurl.net
  • Bookmark openHAB, Telegram Bot and quoting URLs at Simpy.com
  • Bookmark openHAB, Telegram Bot and quoting URLs at blogmarks
  • Bookmark openHAB, Telegram Bot and quoting URLs with wists
  • wong it!
  • Bookmark using any bookmark manager!
  • Stumble It!
  • Identi.ca

Text-to-Speech in openHAB

In my ongoing endeavor to improve our home, a while ago I added a notification when the washing machine and the dryer are finished. The notification is send to a Telegram channel. Over the summer vacation I added a number new ChromeCast Audio devices (Google no longer offers the Audio CC, if you need one get one now). One is placed in the kitchen. Not only can I listen to music while eating breakfast, I can also output notifications, by using the CC as an audio sink in openHAB.

To make that useful, I decided to use a Text-to-Speech system. openHAB offers a couple different TTS systems, however most of them need a cloud integration, and therefore a working Internet connection. The "Pico TTS" works standalone, and was my favorite choice for this implementation.

 

Continue reading "Text-to-Speech in openHAB"
  • Twitter
  • Bookmark Text-to-Speech in openHAB at del.icio.us
  • Facebook
  • Google Bookmarks
  • FriendFeed
  • Digg Text-to-Speech in openHAB
  • Bloglines Text-to-Speech in openHAB
  • Technorati Text-to-Speech in openHAB
  • Fark this: Text-to-Speech in openHAB
  • Bookmark Text-to-Speech in openHAB at YahooMyWeb
  • Bookmark Text-to-Speech in openHAB at Furl.net
  • Bookmark Text-to-Speech in openHAB at reddit.com
  • Bookmark Text-to-Speech in openHAB at blinklist.com
  • Bookmark Text-to-Speech in openHAB at Spurl.net
  • Bookmark Text-to-Speech in openHAB at Simpy.com
  • Bookmark Text-to-Speech in openHAB at blogmarks
  • Bookmark Text-to-Speech in openHAB with wists
  • wong it!
  • Bookmark using any bookmark manager!
  • Stumble It!
  • Identi.ca

openHAB and Tankerkönig gas prices + Telegram integration - Second iteration

In my previous blog post about "Tankerkönig" I explained the details of how to integrate this binding into openHAB and provide a Telegram interface.

Someone on the openHAB community forum pointed out that Telegram bots allow queries, where one can present the user with options, and the user only has to click on one of the options. That makes it easier to use, and less typing is required as well. I went ahead and implemented that.

 

 

Continue reading "openHAB and Tankerkönig gas prices + Telegram integration - Second iteration"
  • Twitter
  • Bookmark openHAB and Tankerkönig gas prices + Telegram integration - Second iteration at del.icio.us
  • Facebook
  • Google Bookmarks
  • FriendFeed
  • Digg openHAB and Tankerkönig gas prices + Telegram integration - Second iteration
  • Bloglines openHAB and Tankerkönig gas prices + Telegram integration - Second iteration
  • Technorati openHAB and Tankerkönig gas prices + Telegram integration - Second iteration
  • Fark this: openHAB and Tankerkönig gas prices + Telegram integration - Second iteration
  • Bookmark openHAB and Tankerkönig gas prices + Telegram integration - Second iteration at YahooMyWeb
  • Bookmark openHAB and Tankerkönig gas prices + Telegram integration - Second iteration at Furl.net
  • Bookmark openHAB and Tankerkönig gas prices + Telegram integration - Second iteration at reddit.com
  • Bookmark openHAB and Tankerkönig gas prices + Telegram integration - Second iteration at blinklist.com
  • Bookmark openHAB and Tankerkönig gas prices + Telegram integration - Second iteration at Spurl.net
  • Bookmark openHAB and Tankerkönig gas prices + Telegram integration - Second iteration at Simpy.com
  • Bookmark openHAB and Tankerkönig gas prices + Telegram integration - Second iteration at blogmarks
  • Bookmark openHAB and Tankerkönig gas prices + Telegram integration - Second iteration with wists
  • wong it!
  • Bookmark using any bookmark manager!
  • Stumble It!
  • Identi.ca

Install openHABian image on Linux

My plan is to reinstall openHABian on a bigger SDcard, and on a Raspberry Pi 4. The latest release (v1.5) supports the new Pi 4, and I decided it's time to do a fresh install, and see if all my Playbooks are still working.

Raspberry Pi 4 with Sectronics Armor (cooling) Case

As always, I'm searching my shell history for the right command how to install the image ... but came up empty.

 

Continue reading "Install openHABian image on Linux"
  • Twitter
  • Bookmark Install openHABian image on Linux at del.icio.us
  • Facebook
  • Google Bookmarks
  • FriendFeed
  • Digg Install openHABian image on Linux
  • Bloglines Install openHABian image on Linux
  • Technorati Install openHABian image on Linux
  • Fark this: Install openHABian image on Linux
  • Bookmark Install openHABian image on Linux at YahooMyWeb
  • Bookmark Install openHABian image on Linux at Furl.net
  • Bookmark Install openHABian image on Linux at reddit.com
  • Bookmark Install openHABian image on Linux at blinklist.com
  • Bookmark Install openHABian image on Linux at Spurl.net
  • Bookmark Install openHABian image on Linux at Simpy.com
  • Bookmark Install openHABian image on Linux at blogmarks
  • Bookmark Install openHABian image on Linux with wists
  • wong it!
  • Bookmark using any bookmark manager!
  • Stumble It!
  • Identi.ca