Conditionally execute a TeamCity build step

teamcityteamcity-8.0

I am working on defining a general-purpose build template for all our projects — which I have placed at the "root project" level (thanks to this new feature of TeamCity 8). Some of our projects create an installer, which needs to be generated by a separate "build step" that runs a powershell script. However, some of our projects do not create this installer, and hence do not need this additional build step.

Is there a way to conditionally execute a build step, based on a build parameter? I thought that perhaps the "disable build step" feature could be leveraged here, but I don't see a way to define the enabled/disabled status of a step via a parameter.

Of course I could bake this conditional into the build step that performs the installer generation, but it would be cleaner if this could be handled from within teamcity itself.

Best Answer

I've had need for conditional build steps on numerous occasions but alas, the feature does not exist at the moment. http://youtrack.jetbrains.com/issue/TW-17939

There's no reason you can't have a template used by many build configurations and then simply disable the build step in the build configs/projects that do not need to create the installer. Disabling the step in an individual build config does not affect the parent template it is based on.

Not as tidy as having a runtime/dynamic method built in to TC but I use it on occasion. I've done iwo has suggested as well.

Related Solutions

Python – How to load and show a rescaled image with pyqt4

You could use the QPixmap.scaledToHeight or QPixmap.scaledToWidth method:

import sys
from PyQt4 import QtGui
app = QtGui.QApplication(sys.argv)
window = QtGui.QMainWindow()
window.setGeometry(0, 0, 400, 200)
pic = QtGui.QLabel(window)
pic.setGeometry(10, 10, 400, 200)
pixmap = QtGui.QPixmap(FILENAME)
pixmap = pixmap.scaledToHeight(200)
pic.setPixmap(pixmap)

window.show()
sys.exit(app.exec_())

You can find documentation on PyQT classes (including QPixmap) here.

Sometimes when I am lazy and do not want to read documentation, I use this:

def describe(obj):
    for key in dir(obj):
        try:
            val = getattr(obj, key)
        except AttributeError:
            continue
        if callable(val):
            help(val)
        else:
            print('{k} => {v}'.format(k = key, v = val))
        print('-'*80)

pixmap = QtGui.QPixmap(FILENAME)
describe(pixmap)

which prints lots of output about all the attributes of the object passed to describe. In this case, you can find relevant methods by searching for the string -> QPixmap since these are the methods that return a new QPixmap. That's how I found scaledToHeight and scaledToWidth.

Best Answer

Related Solutions

Python – How to load and show a rescaled image with pyqt4

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