I have developed a script which executes against one DB instance e.g.: db1. The code to connect to DB is written in Background section. Now what i want to do is, i have to execute same test script against diffrent db instance e.g.:db2
Feature:Execution against multiple DB instance.
##############################################
Background:
* def db_properties = {db_username,db_password,db_connection_string,driver}
* def createConnection = path to read .java file
* def readFromDB = new createConnection(db_properties)
##############################################
In * def db_properties, i have hard coded the actual values of username, password, conenction string and driver.What exactly i want to do is, i have to validate my API response agains't another DB instance e.g. build is deployed in another environment, and db properties which i have mentioned is diffrent environment. How can i do it?
This has nothing to do with Karate. Maybe the solution is to have 2 sets of DB connection values in your karate-config.js. Please figure out a solution that is appropriate for your situation.
Related
I'm writing a small Flask application and am having it connect to Rserve using pyRserve. I want every session to initiate and then maintain its own Rserve connection.
Something like this:
session['my_connection'] = pyRserve.connect()
doesn't work because the connection object is not JSON serializable. On the other hand, something like this:
flask.g.my_connection = pyRserve.connect()
doesn't work because it does not persist between requests. To add to the difficulty, it doesn't seem as though pyRserve provides any identifier for a connection, so I can't store a connection ID in the session and use that to retrieve the right connection before each request.
Is there a way to accomplish having a unique connection per session?
The following applies to any global Python data that you don't want to recreate for each request, not just rserve, and not just data that is unique to each user.
We need some common location to create an rserve connection for each user. The simplest way to do this is to run a multiprocessing.Manager as a separate process.
import atexit
from multiprocessing import Lock
from multiprocessing.managers import BaseManager
import pyRserve
connections = {}
lock = Lock()
def get_connection(user_id):
with lock:
if user_id not in connections:
connections[user_id] = pyRserve.connect()
return connections[user_id]
#atexit.register
def close_connections():
for connection in connections.values():
connection.close()
manager = BaseManager(('', 37844), b'password')
manager.register('get_connection', get_connection)
server = manager.get_server()
server.serve_forever()
Run it before starting your application, so that the manager will be available:
python rserve_manager.py
We can access this manager from the app during requests using a simple function. This assumes you've got a value for "user_id" in the session (which is what Flask-Login would do, for example). This ends up making the rserve connection unique per user, not per session.
from multiprocessing.managers import BaseManager
from flask import g, session
def get_rserve():
if not hasattr(g, 'rserve'):
manager = BaseManager(('', 37844), b'password')
manager.register('get_connection')
manager.connect()
g.rserve = manager.get_connection(session['user_id'])
return g.rserve
Access it inside a view:
result = get_rserve().eval('3 + 5')
This should get you started, although there's plenty that can be improved, such as not hard-coding the address and password, and not throwing away the connections to the manager. This was written with Python 3, but should work with Python 2.
We are having one django rest framework (DRF) project which should have multiple databases (mongoDB).Each databases should be independed. We are able to connect to one database, but when we are going to another DB for writing connection is happening but data is storing in DB which is first connected.
We changed default DB and everything but no changes.
(Note : Solution should be apt for the usage of serializer. Because we need to use DynamicDocumentSerializer in DRF-mongoengine.
Thanks in advance.
While running connect() just assign an alias for each of your databases and then for each Document specify a db_alias parameter in meta that points to a specific database alias:
settings.py:
from mongoengine import connect
connect(
alias='user-db',
db='test',
username='user',
password='12345',
host='mongodb://admin:qwerty#localhost/production'
)
connect(
alias='book-db'
db='test',
username='user',
password='12345',
host='mongodb://admin:qwerty#localhost/production'
)
models.py:
from mongoengine import Document
class User(Document):
name = StringField()
meta = {'db_alias': 'user-db'}
class Book(Document):
name = StringField()
meta = {'db_alias': 'book-db'}
I guess, I finally get what you need.
What you could do is write a really simple middleware that maps your url schema to the database:
from mongoengine import *
class DBSwitchMiddleware:
"""
This middleware is supposed to switch the database depending on request URL.
"""
def __init__(self, get_response):
# list all the mongoengine Documents in your project
import models
self.documents = [item for in dir(models) if isinstance(item, Document)]
def __call__(self, request):
# depending on the URL, switch documents to appropriate database
if request.path.startswith('/main/project1'):
for document in self.documents:
document.cls._meta['db_alias'] = 'db1'
elif request.path.startswith('/main/project2'):
for document in self.documents:
document.cls._meta['db_alias'] = 'db2'
# delegate handling the rest of response to your views
response = get_response(request)
return response
Note that this solution might be prone to race conditions. We're modifying a Documents globally here, so if one request was started and then in the middle of its execution a second request is handled by the same python interpreter, it will overwrite document.cls._meta['db_alias'] setting and first request will start writing to the same database, which will break your database horribly.
Same python interpreter is used by 2 request handlers, if you're using multithreading. So with this solution you can't start your server with multiple threads, only with multiple processes.
To address the threading issues, you can use threading.local(). If you prefer context manager approach, there's also a contextvars module.
In Karate script is there a way to cache the DB connections ? . To be more specific the DB connections are through a Java program , every time we make DB calls the connection call is also
def dbDemo=Java.type('tests.DataBaseAssertions')
The above line of code is used in all the feature files . Is there a way to cache this object so that all script can refer to that .
Application level
Sounds like you are looking for the callSingle() syntax, please refer to the docs:
https://github.com/intuit/karate#hooks
var result = karate.callSingle('classpath:jdbc.feature');
In SoapUI, I have a host Test Case, which executes another external Test Case (with several test steps) using the "Run Test Case" test step. I need to access a response from the external TC from within my host TC, since I need to assert on some values.
I cannot transfer the properties since they are in XML. Could I get some pointers as to how I could leverage Groovy/SoapUI for this.
For Response you can use the below code.
testRunner.testCase.getTestStepByName("test step").testRequest.response.responseContent
In you external TC create another property and at the end of the TC use Transfer Property step to transfer your XML node to it. In your host TC, just read that property as you would any other.
I also had a look around to see if this can be done from Groovy. SoapUI documentation says that you need to refer to the external name of the testsuite / testcase:
def tc = testRunner.testCase.testSuite.project.testSuites["external TestSuite"].testCases["external TestCase"]
def ts = tc.testSteps["test step"]
But I could not find how to get at the Response after that.
In addition to Guest and SiKing answers, I share a solution to a problem that I've met:
If your step is not of type 'request' but 'calltestcase' you cannot use Guest answer.
I have a lot of requests contained each in a testCase and my other testCases call these testCases each time I need to launch a request.
I configured my request testCases in order to return the response as a custom property that I call "testResponse" so I can easily access it from my other testCases.
I met a problem in the following configuration :
I have a "calltestcase" step that gives me a request result.
Further in the test I have a groovy script that needs to call this step and get the response value
If I use this solution :
testRunner.runTestStepByName("test step")
followed by testRunner.testCase.getTestStepByName("test step").testRequest.response.responseContent
I'm stuck as there is no testRequest property for the class.
The solution that works is :
testRunner.runTestStepByName("test step")
def response_value = context.expand( '${test step#testResponse#$[\'value\']}' )
another solution is :
testRunner.runTestStepByName("test step")
tStep = testRunner.testCase.getTestStepByName("test step")
response = tStep.getPropertyValue("testResponse")
Then I extract the relevant value from 'response' (in my case, it is a json that I have to parse).
Of course it works only because I the request response as a custom property of my request test case.
I hope I was clear enough
I have a Test Case called "testCaseOne"
It contains three Test Steps:
"AMFrequestOne"
"propertyTransfer"
"AMFrequestTwo"
"AMFrequestOne" creates a database object.
"propertyTransfer" sends the ResponseAsXml to a temporary property in "testCaseOne" called "tempProp".
I need to reference "tempProp" in a script inside of "AMFrequestTwo"
I've tried the following
def temp = testRunner.testCase.getPropertyValue( "tempProp" )
but I get the error "No such property: testRunner for class: Script6" (number increments with tries)
Is this because in an AMF request "Script is invoked with log, context, parameters and amfHeaders variables" and testRunner is not recognized?
I know it seems odd, but is it possible to do this? I'm unable to use a specific xpath property transfer between the two AMF Requests as it's possible for the structure to change and I'm not always looking for the same node.
Used
def temp = context.testCase.getPropertyValue( "tempProp" )
instead of
def temp = testRunner.testCase.getPropertyValue( "tempProp" )
and this works fine.