Kinda a random question, but our company uses Jenkins
http://jenkins-ci.org/
Anyways there is a section for our company thats like a "Weather Report" in table form of build statuses. Basically It'll have a Weather Icon (Sunny/Cloudy/Thunderstorm) then on mouseover it'll tell what % of methods have been covered, and how many builds have failed (like 2/256) or something.
Also there is a Blue Glowing Indicator that well.....flashes/glows when a Project is being 'built' and turns solid blue when it is completed......Anyways How exactly is this done?
Obviously the webpage is some basic Html/Javascript and im pretty sure XML (for the tables). stuff, but....Im confused at how exactly you'd get the status of builds like they do, (especially checking what % of methods are completed?). And what about checking if something is currently being "built" or is completed (i'd imagine it returns some "SUCCESS" string.....when it's finished, but what about when it's being currently build....
Any ideas at how this is done? (and b4 someone asks "Why don't you ask the company") i'd rather just figure out how the basics are done to implement it myself in a test website.
I would take a screenshot....but im pretty sure most of stuff is considered confidential....and I wouldn't wanna get fired lol. But TL;DR How would you make your OWN build status checker.
EDIT: http://wiki.jenkins-ci.org/display/JENKINS/Firefox+Add-on+Build+Monitor
^^ thats a example of a firefox addon that sorta does what Im looking for, but I would want to create my own and not use jenkins( which is awesome, but I just want to figure out how they did it)
Javascript in the status page.
The simple version would use a call back to run every X number of seconds to request status information from the server with something like http://api.jquery.com/jQuery.ajax/, and then update the page accordingly.
A more advanced version, which avoids the need to poll every X seconds, would use something like Comet http://en.wikipedia.org/wiki/Comet_(programming)) which would allow the browser to keep a connection open, and for the server to send updates as they occurred.
The percent completion in Jenkins is just basically a guess based on how long the current build has been running vs how long recent builds took to complete, so assuming your server side tracks the length of tasks, you could take an average, and compare the length of the current run to calculate the percentage complete.
If you want to know how Jenkins/Hudson works, a good start is probably their Architecture Documents that were posted in January:
Hudson Web/REST Architecture
Hudson View Architecture
Hudson Execution Architecture
Hudson Remote Execution Architecture
Hudson Security Architecture
Hudson Plugin Architecture
If you want to look into how a simple continuous integration server works, you'd probably want to look at
the source of travis-ci or
the source of CI Joe
which are both simplistic and written in Ruby.
As for the live status indicator thingy with jenkins, equip yourself with Firebug and have a look around on the status page. You should see a bunch of Ajax requests going on.
For the build progress estimation part (I think that's what you mean by "checking what % of methods are completed", not?) I observed that Jenkins is just guessing that by relating time spent on this build / time spent on last run of this build.
Related
I hope this is the right place to post this question. The web applications stack exchange did not look suitable based on the other questions asked on there so I guessed this might be the best place to put this question.
I have a java eclipse project that works as I would like it which takes in an image locally from the adjacent file path and performs the required action on this image before returning a double value at the end after all the calculations. To do these calculations I use the OpenCV library which is essential to the core functionality of the application.
The issue I am having is to deploy this application so that the the application when it receives a request will take in an image (preferably as a .jpg but this can be changed if absolutely essential) and then after the application has carried out the required task send back the resulting number. In future this will be sent and received by an Android app which will just take the photo, compress it and send it away before receiving and displaying the answer but for now I'm just trying to get my project onto an accessible server.
I have tried to use Heroku and followed their tutorials and instructions which encourages the use of Maven but I could not properly insert the dependencies for my project as it used an external jar. I spent a lot of time checking through the various solutions online to this issue but a lot of them felt like workarounds which only worked in some cases and none were working for me. I am open to using this again if there is an elegant solution that is simple to follow.
The main sections of this question that I am asking is for the simplest way to take my working eclipse project which uses an external library, modify it to take in an image via server request and then send back a number result. I also would like a suggestion as to which cloud-based service would be suitable for this project and allow me simply to put my code on their service and allow a test user to run this code whenever I want with reasonable availability.
Sorry for the long-winded explanation and I hope I have provided enough information. I have been trying to work out how to do these things with the help of tutorials and suggestions for a few weeks now but have no previous experience with making a web server as everything I have created has been a local program.
Thanks for your help and suggestions
In my tests chrome stucks after 30 or 40 minutes of work with error:
[710.758][SEVERE]: Unable to receive message from renderer
My current functionally is to take some txt data from web page and add it to inputs using executeScript. Can someone to help with this issue? Or just tell me correct way to resolve this problem
As far as I can remember, Chrome uses its own task manager... it can be opened by pressing shift+esc, assuming you don't have another program hooking that hotkey pair. Open the task manager and monitor the different tasks to see which one is bogging.
(couldn't leave a comment with low rep)
In my experience, this kind of error happens when you have something on the browser side which is preventing the part of Selenium that lives in the browser from doing its work. Whenever I've seen it, it was because some code went into an infinite loop. This would prevent the JavaScript engine from giving control to anything else and would prevent Selenium from being able to poll the renderer.
Besides the message Unable to receive message from renderer the other symptom would be a relatively high CPU usage from the test browser. Linux was pretty good about preventing the runaway browser from completely hosing my machine. I had to take a look specifically at the browser's processes to see the problem.
I'm working with a project of patient queuing using JSP and Eclipse IDE. In it, I require a message to be conveyed between two different sessions of same website (i.e. the doctor's and compounder's homepage are alive).
As soon as the doctor finishes consulting a patient, a message is to be passed to the compounder's home page saying "To send new patient in".
I checked session creations and MVVM. But it doesn't satisfy me. Will anyone please help me out on this? I have tried an "auto refresh" inside JavaScript, but I ended up in an infinite loop.
This is a very broad topic. You can go about it in several ways and using several technologies (message queues/brokers, websocket, dwr, etc).
This is similar to building a chat application so maybe search for that online (again another broad topic).
If you want something very simple (and most of the times inefficient - but that depends on your requirements) you can go about it this way:
Have a simple database behind your application (an application wide thread-safe queue should work too but a database gives you persistance in case something happens to the application, like a server crash);
once the doctor finishes the consultation, his page saves an entry to the database, a flag basically;
The compounder's page has an Ajax request that from time to time (say 10 sec) looks for the flag in the database;
if the flag is found it displays a message on the compounder's page to send the next patient and then resets the flag
repeat step 2.
Those are broad steps to build something simple. As I said, not the most efficient way. Search for how to build a chat and you'll find better ways since a requirement for chat applications is to be fast and scalable.
I am looking for an addition for our "livestream and podcast" solution, which uses a camera to film speeches in our house.
It has been requested to view the slides of our speakers directly as a image in the webbrowser instead of the video stream. We don't want/can not install software on the speakers laptop, so I thought about a Java applet, which the speaker can just run via a webbrowser.
So what I need is technically this:
[speakers laptop] -> [Screencapture every N seconds via applet on a webpage] -> [Displaying the screen of the speaker on a different webpage for the external viewers]
I know there are Java applications which do record the screen, but save the file output locally. I need something that does the same, but sends the image to the server. On the server side I thought about a websocket.js accepting and displaying the image (other suggestions are welcome).
It would be great if somebody could help me out here. Btw, I never programmed in Java, so telling me which frameworks I need won't really help me.
Thanks!!
I was recently asked to evaluate possibilities for live screen-cast via applet. Most video APIs do not support codecs that have high enough compression (e.g. JMF). Some APIs can do advanced formats (JFFMPEG, Xuggle) but also use natives. While natives are normally no problem for an app. launched (free floating) using Java Web Start or a Plug-In 2 applet, the makers of Xuggle identify 'the order of loading natives' as a problem (e.g. won't work) for both JWS and applets.
It is a pity that more than a decade into its development, Java has no reasonable API for video capture/processing that can be deployed for a wide use (applet/JWS based - for the 'general public') GUI.
Perhaps you can find a solution using Flash.
Update 1
In fact, I do not need the screen to be recorded as a video.
In fact, you mentioned much of that in your initial question, but I focused on just a few keywords before drafting a reply. My bad. :P
OK.
Getting an image is relatively easy. An applet would need to be trusted in order to get a screenshot, but once trusted, it is just a few lines of code to get the image.
Encoding the image to JPEG of particular quality/compression setting (in memory) is also doable.
Sending the image to the server would depend on the size in bytes and connection speed, but one image with a high compression, every 10 seconds, should be doable. The server would need to implement functionality to accept the image.
As far as displaying the image on the client, it seems you already have some ideas based around JS. If you can make that work that would be optimal, since it can then be viewed in browsers with no Java.
I would still recommend you deploy the app. to the 'speaker' using Java Web Start, rather than embed an applet. A JWS app. will give you less deployment & maintenance troubles, and the JWS launch is ..nicer. Further, a free floating frame launched using JWS can minimize itself (or in later JREs, become transparent), during the action of taking a screen image - thereby capturing everything on the screen except itself.
Update 2
I actually found this code here.
That is ..horrible. Not the code, the site. When I visited it I got a message saying a pop-up had been suppressed (fair enough). Then there was the irritating 'vibrating dialog' hovering in the middle of the page (and following the scroll). You click the little x to see - another tab opened with yet another floating dialog, saying some other rubbish about how "You've won.." - with sound loud enough to drown out my high volume trance/dance playlist.
Then after closing that the hell out of my FF, I go back to the original page, close the damn 'dialog', scroll down & see.. a red background to the code (shudder). That is as far as I could manage. I closed the page with the code.
Try this code instead, for a single screen-shot.
Would it be possible to use this on the client side..
Yes.
.. and receive it with javascript on the server side?
Not really. Unless you mean an IIS based server running Microsoft's JScript. JavaScript is a client side technology.
For security reasons, servers need to protect themselves. E.G. From:
Someone creating a slavebot that uploads all the 1000s of docs on the slave machine's to the site - to make it crash.
People high-jacking your server for storing and serving bestiality porn (or worse).
Because of things like that (bad people have lots of imagination), while servers can easily accept uploads, they are generally not configured by default to allow them.
.. (I don't want Java on my server ;-)
It can be done using PHP, ASP, CGI etc. It does not need Java specifically, but it does need some active involvement from the server, if only to check the size of what is being uploaded and abort if it gets too large!
..Will take a look at the link you posted, but as I said, I can't program in Java, though I can understand some of it. Thanks!
It sounds like you'll need some help getting the server-side of it ready, as well. It is trivial for someone that knows how (not me), but a potential security nightmare for the inexperienced.
Update 3
where do I add the function to send the picture?
Sorry. I've not tried to implement that - you'd want to want to encode it to JPEG before sending, to reduce the size. See this code for how to provide an adjustable compression/quality where the user can see the effect.
There are various ways to get an image to a server. E.G. sockets, HTTP, FTP.. AFAIU it would depend on how the server is accepting it. I am unfamiliar with the specific term 'websocket' or the node.js script. Can you link to what you mean?
..the old code added to pastebin, so it's readable
Smart thinking. I notice it uses sockets, it was in the back of my mind that sockets would be best for this, since they have low overhead and short wait times.
We need a tool to test a set of fairly complex Java applications. The applications are mostly independent client programs or applets communicating with a servlet or apache server at a remote site. Specs:
Runnable on Windows XP, Vista and 7
Parameterizable (Can specify in a script the sequence of buttons to click, text to type in JTextFields and browser address bar etc.)
Can quit or bail out or display a nasty message if the expected window or dialog box doesn't appear
Record the output on the Java Console of browser in a .txt file (IE is sufficient for now) when the application opens a browser window.
While running, I should be able to see it running with folded hands while it would run
for a few minutes
We were thinking of writing an AWTRobot based tool that reads a command file and does this - (don't know how to do #3 or #4 yet - will ask you folks some day how to detect a window on the desktop). Would you suggest an open source tool available to do this? We don't need anything fancy to capture video or screenshots. Thank you, - M.S.
For browser based automated testing you can use Selenuim or you can use WebDriver.
The selenium project is hosted here
If you don't need to test the way the pages are actually rendered by the browser, but instead need to work at the HTTP/HTTPS/etc request level then have a look at JMeter. It has parametrization, dataproviders, graphs, and a proxy component for recording http user sessions.
If you do need browser testing, then, as has already been mentioned, Selenium is probably the best freely available tool. For production I would recommend using Selenium Remote Control server which can be driven by scripts written in Java/Python/C#/Perl/PHP.
To see what tools people use in real production environments, and to do your own research on what is available I recommend www.sqaforums.com.
Have a look at Sikuli
The reason I suggest this is it sounds like you need to test both a Java applet and the content of a native browser (launched from Java, but not itself Java) -- so it's not "Java all the way".
I'm not sure what you mean by criteria 4, though. It is worth noting that as Sukuli works by image analysis, it won't be able to copy text to a text file.
This question is an invitation for sales pitch, don't you think. How about Mercury Quicktest professional ( I believe its HP Quick test now). I do not believe this will be cheap either ( and well its HP, it will probably only work in IE ;)).
Since you want an open source solution, I believe, the most popular option is selenium and yes its a pain to configure sometimes ( like for Flex for example). So you should try Watir.
There is a lot of good buzz around it and when I evaluated it, I loved what I see.Also it does not work for desktop applications, I suggest you try some other solution for that.
(The problem is open source GUI testing tools are not usually all inclusive. If you need one solution to handle all your gui testing needs, then you should check out the more commercial ones like QTP.
I have used IBM Rational Functional Tester. It has everything you need and it's quite easy to learn. The scripting language is either Java or VB.Net so you won't have to worry about learning a language for your tests.
I had some pretty good results with Squish from FrogLogic and didn't break the bank: http://www.froglogic.com/products/
Did you try Squsih - http://www.froglogic.com/products/index.php