I wrote a code and used concert technology(cplex and C++). Now I want to get some information about variable selection. For example I want to know that at each node which variable is selected among 10 variables.
how can i write this and add it to my code?
As #IagoCarvalho suggested, you should have a look at the Branch callback:
https://www.ibm.com/support/knowledgecenter/SSSA5P_12.9.0/ilog.odms.cplex.help/CPLEX/UsrMan/topics/progr_adv/callbacks_basic/15_catalog.html.
Examples using a branch callback can be found in an installation of the product. Look for "branch callback" in the cplex/examples/src directory and you will find, among others, cpp/iloadmipex3.cpp.
Related
I have 100+ feature files that each year need to be updated with the year of the request ie this year they show 22-23 but next it will be 23-24 in almost every test. We created a step that allowed us to us a variable instead that we set in config eg
currentYear: 22-23
which we can then manipulate in our step to use currentYear+1 currentYear-5 etc. This all works fine and means that annually we simply change the config however on the output it shows the variable name rather than the value...eg
And Path Parameters:
year: [currentYear]
What I need it to do is show that as the value it actually used.
year: 22-23
No doubt this is something simple but I can't quite seem to get it! Any pointers would be greatly appreciated.
If you are using Maven you can filter resources before they're used in a test. This would allow you to use a variable in your feature files and have it replaced when tests are executed.
https://maven.apache.org/plugins/maven-resources-plugin/examples/filter.html
I'm certain Gradle has a similar feature.
Note that these filtered resources will be put on the classpath. So you should use classpath:com/example.feature as your feature path and not src/main/resources/com/example.feature. If JUnit 5 is used #SelectClasspathResource("com/example.feature").
Disclaimer: I can achieve the behavior I’m looking for with Active Choices plugin, BUT I really want this to work in a Jenkinsfile and controlled with scm because it’s tedious to configure the Active Choices on each job we may need them on. And with it being separate from the Jenkinsfile creation, it’s then one job defined in multiple places. :(
I am looking to verify if this is possible, because I can’t get the syntax right, if it is possible. And I haven’t been able to find any examples online:
pipeline {
environment {
ARTIFACTS = lib.myfunc() // this works well
}
parameters {
choice(name: "Artifacts", choices: ARTIFACTS) // I can’t get this to work
}
}
I cannot use the function inline in the declaration of the parameter. The errors were clear about that, but it seems as though I should be able to do what I’ve written out above.
I am not home, so I do not have the exceptions handy, but I will add them soon. They did not seem very helpful while I was working on this yesterday.
What have I tried?
I’ve tried having the the function return a List Because it requires a list according to the docs, and I’ve also tried (illogically) returning a String in the precise syntax of a list of strings. (It was hacky, like return "['" + artifacts.join("', '") + "']" to look like ['artifact1.zip', 'artifact2.zip']
I also tried things like "$ARTIFACTS" and ${ARTIFACTS} in desperation.
the list of choices has to be supplied as String containing new line characters (\n): choices: 'TESTING\nSTAGING\nPRODUCTION'
I was tipped off by this article:
https://st-g.de/2016/12/parametrized-jenkins-pipelines
Related to a bug:
https://issues.jenkins.io/plugins/servlet/mobile#issue/JENKINS-40358
:shrug:
First, we need to understand that Jenkins starts running your pipeline code by presenting you with Parameters page. Once you've set up the parameters, and pressed Build, then a node is allocated, variables are set, and your code starts to run.
But in your pipeline, as presented above, you want to run some code to prepare the parameters.
This is not how Jenkins usually works. It's definitely not doing the following: allocating a node, setting the variables, running some of your code until parameters clause is reached, stopping all that, presenting you with GUI, and then continuing where it left off. Again, it's not how Jenkins works.
This is why, when writing a new pipeline, your first option to build it is Build and not Build with Parameters. Jenkins hasn't run your code yet; it doesn't have any idea if there are any parameters. When running for the first time, it will remember the parameters (and any choices, if were) as were configured for this (first) run, so in the second run you will see the parameters as configured in the first run. (Generally, in run number n you will see the result of configuration in run number n-1.)
There are a number of ways to overcome this.
If having a "somewhat recent" (and not "current and absolutely up-to-date") situation fits you, your code may need minor changes to work — second time. (I don't know what exactly lib.myfunc() returns but if it's a choice of Development/Staging/Production this might be good enough.)
If having a "somewhat recent" situation is an absolute no-no (e.g. your lib.myfunc() returns the list of git branches, and "list of branches as of yesterday" is unacceptable), then your only solution is ActiveChoice. ActiveChoice allows you to run some code before showing you the Build with Parameters GUI (with script approval etc.).
I have a cucumber feature file 'A' that serves as setting up environment (data clean up and initialization). I want to have it executed before all other feature files can run.
It's it kind of like #before hook as in http://zsoltfabok.com/blog/2012/09/cucumber-jvm-hooks/. However, that does not work because my feature files 'A' contains hundreds of cucumber steps and it is not as simple as:
#Before
public void beforeScenario() {
tomcat.start();
tomcat.deploy("munger");
browser = new FirefoxDriver();
}
instead it's better to be able to run 'A' as a feature file as a whole.
I've searched around but did not find a answer. I am so surprised that no one has this type of requirement before.
The closest i found is 'background'. But that means i can have only one huge feature file with the content of 'A' as 'background' at the top, and rest of my test in the same file. I really do not want to do that.
Any suggestions?
By default, Cucumber features are run single thread in order by:
Alphabetically by feature file directory
Alphabetically by feature file name within directory
Scenario execution is then by order within the feature file.
So have your initialization feature in the first directory (alhpabetically) with a file name that sorts first (alphabetically) in that directory.
That being said it is generally a bad practice to require an execution order in your feature files. We run our feature files in parallel so order is meaningless. For Jenkins or TeamCity you could add a build step that executes the one feature file followed by a second build step that executes the rest of your feature files.
I have also a project, where we have a single feature file, that contains a very long scenario called Scenario: Test data with a lot of very long scenarios, like this:
Given the system knows about the following employees
|uuid|user-key|name|nickname|
|1|0101140000|Anna|annie|
... hundreds of lines like this follow ...
We see this long SystemKnows scenarios as quite valuable, so that our testers, Product Owner and developers have a baseline of what data are in the system. Our domain is quite complex, and we need this baseline of reference data for everyone to be able to understand the tests.
(These reference data become almost like well known personas, and are a shared team metaphore)
In the beginning, we were relying on the alphabetic naming convention, to have the AAA.feature to be run first.
Later, we discovered that this setup was brittle, and decided to use the following trick, inspired by the PageObject pattern:
Add a background with the single line Given(~'^I set test data for all feature files$')
In the step definition, have a factory to create the test data, and make sure inside the factore method, that it is only created once, like testFactory.createTestData()
In this way, you have both the convenience of expressing reference setup as a scenario, that enhances team communication, but you also have a stable test setup.
Hope this is helpful!
Agata
I'm currently working on a deployment script to run as part of my GitLab CI setup. What I want is to copy a file from one location to another and rename it.
Now I want to be able to find what commit that file was generated with, so I'd like to add the hash of the commit to it.
For that to work I'd like to use something like this:
cp myLogFile.log /var/log/gitlab-runs/$COMMITHASH.log
The output should be a file named eg.
/var/log/gitlab-runs/9b43adf.log
How is this possible to achieve using GitLab CI?
In your example you used the short git hash that you would get with the predefined variable CI_COMMIT_SHA by building a substring like this:
${CI_COMMIT_SHA:0:8}
or by using the short sha directly
$CI_COMMIT_SHORT_SHA
The variable you are looking for is CI_COMMIT_SHA (formerly CI_BUILD_REF in GitLab 8.x and earlier) which one of the predefined variables.
All predefined variables are listed here.
Since GitLab v11.7 you can use $CI_COMMIT_SHORT_SHA which returns the first eight characters of CI_COMMIT_SHA.
I came across echofunc.vim today (from a link in SO). Since I'm rubbish at remembering the order of function parameters, it looked like a very useful tool for me.
But the documentation is a bit lean on installation! And I've not been able to find any supplementary resources on the internet.
I'm trying to get it running on a RHEL box. I've copied the script into ~/.vim/plugin/echofunc.vim however no prompt when I type in a function name followed by '('. I've tried adding
let g:EchoFuncLangsUsed = ["php","java","cpp"]
to my .vimrc - still no prompting.
I'm guessing it needs to read from a dictionary somewhere - although there is a file in /usr/share/vim/vim70/ftplugin/php.vim, this is the RH default and does not include an explicit function list.
I'm not too bothered about getting hints on the functions/methods I've defined - just trying to get hints for the built-in functions. I can see there is a dictionary file available here which appears to provide the resources required for echofunc.vim, I can't see how I set this up.
TIA,
It expects a tags file, the last line of the description describes exactly how to generate it:
ctags -R --fields=+lS .
It works here with PHP but not with JS. Your mileage may vary.
I didn't know about this plugin, thanks for the info.
You should try phpcomplete.vim, it shows a prototype of the current function in a scratchpad. It is PHP only, though.