I want my client to download (not render) a dynamically generated PDF file via pyramid. Right now I do it like this:
def get_pdf(request):
pdfFile = open('/tmp/example.pdf', "wb")
pdfFile.write(generator.GeneratePDF())
response = FileResponse('/tmp/example.pdf')
response.headers['Content-Disposition'] = ('attachment; filename=example.pdf')
return response
From the client point-of-view it's exactly what I need. However,
It leaves behind an orphaned file
It isn't thread-safe (though I could use random filenames)
The docs say:
class FileResponse
A Response object that can be used to serve a static file from disk simply.
So FileResponse is probably not what I should be using. How would you replace it with something more dynamic but indistinguishable for the client?
Just use a normal response with the same header:
def get_pdf(request):
response = Response(body=generator.GeneratePDF())
response.headers['Content-Disposition'] = ('attachment;filename=example.pdf')
return response
Related
I wish to make a post request to add an attachment utilising urllib3 in python without success. I have confirmed the API itself is working in postman but cannot work out how to convert this request to python. Appreciating I'm mixing object types I just don't know how to avoid it.
Python code:
import urllib3
import json
api_key = "secret_key"
header = {"X-API-KEY": api_key, "ACCEPT": "application/json", "content-type": "multipart/form-data"}
url = "https://secret_url.com/api/"
http = urllib3.PoolManager()
with open("invoice.html", 'rb') as f:
file_data = f.read()
payload = {
"attchment": {
"file": file_data
}
}
payload = json.dumps(payload)
r = http.request('post', url, headers = header, fields = payload)
print(r.status)
print(r.data)
Postman - which works and properly sends file-name through also (I'm guessing it splits the bytes and filename up?)
Edit: I've also tried the requests library as I'm more familiar with this (but can't use it as the script will be running in AWS lambda). Removing the attachment element form the dict allows it to run but the API endpoint gives 401 presumably because it's missing the "attachement" part to the data structure as per postman below... but when I put this in I get runtime errors.
r = requests.post(url, headers = header, files={"file": open("invoice.html", 'rb')})
For anyone who stumbles upon this from Dr google a few points:
I was completely mis-interpreting the structure of the element. It's actually a string "attachment[file]" not a dict like object.
Postman has the ability to output python code in urllib/request syntax albeit not 100% what I was after. Note: the chrome version (depreciated) outputs gibberish code that only half works so the client version should be used. A short bit of work below shows it working as expected:
http = urllib3.PoolManager()
with open("invoice.html", "rb") as f:
file = f.read()
payload={
'attachment[file]':('invoice.html',file,'text/html')
}
r = http.request('post', url, headers = header, fields = payload)
I am getting a zipped response from a server.
Using CURL and | gunzip I am able to get the unzipped content response, but I would like not to use CURL and decompress it directly via SOAPUI, by a header, or by a script.
I tried to write something like:
def responseBody=testRunner.testCase.getTestStepByName("getZIp").httpRequest.response.responseContent;
InputStream ins = new ByteArrayInputStream(responseBody.getBytes())
log.info responseBody
def outFile = new FileOutputStream(new File('/users/trythis.zip'))
if (ins) {
com.eviware.soapui.support.Tools.writeAll(outFile, ins )
}
ins.close()
outFile.close()
but the data is still compressed.
something straight-forward like:
InputStream ins = new ByteArrayInputStream(responseBody.getBytes())
def outFile = new File('/users/trythis.txt')
new GZIPInputStream( ins ).withReader{ outFile << it }
In SoapUI's preferences, there are options for working with API's which expected compressed payloads and/or send back compressed responses.
I've used this in the past and SoapUI decompresses the response and presents that in the UI so I didn't have to resort to Groovy scripts to read the response.
I am writing my first Groovy script, where I am calling a REST API.
I have the following call:
def client = new RESTClient( 'http://myServer:9000/api/resources/?format=json' )
That returns:
[[msr:[[data:{"level":"OK"}]], creationDate:2017-02-14T16:44:11+0000, date:2017-02-14T16:46:39+0000, id:136]]
I am trying to get the field level, like this:
def level_value = client.get( path : 'msr/data/level' )
However, when I print the value of the variable obtained:
println level_value.getData()
I get the whole JSON object instead of the field:
[[msr:[[data:{"level":"OK"}]], creationDate:2017-02-14T16:44:11+0000, date:2017-02-14T16:46:39+0000, id:136]]
So, what am I doing wrong?
Haven't looked at the docs for RESTClient but like Tim notes you seem to have a bit of a confusion around the rest client instance vs the respons object vs the json data. Something along the lines of:
def client = new RESTClient('http://myServer:9000/api/resources/?format=json')
def response = client.get(path: 'msr/data/level')
def level = response.data[0].msr[0].data.level
might get you your value. The main point here is that client is an instance of RESTClient, response is a response object representing the http response from the server, and response.data contains the parsed json payload in the response.
You would need to experiment with the expression on the last line to pull out the 'level' value.
I'm trying to serve base64 encoded image files and failing. Either I get UTF-8 encoded responses or the line return response errors in an interesting way. Mostly everything I've tried can be seen as commented out code in the excerpt below. Details of the traceback follow that.
My question is: How can I return base64 encoded files?
#import base64
#with open(sPath, "rb") as image_file:
#encoded_string = base64.b64encode(image_file.read())
dContentTypes = {
'bmp' : 'image/bmp',
'cod' : 'image/cis-cod',
'git' : 'image/gif',
'ief' : 'image/ief',
'jpe' : 'image/jpeg',
.....
}
sContentType = dContentTypes[sExt]
response = FileResponse(
sPath,
request=request,
content_type= sContentType#+';base64',
#content_encoding = 'base_64'
#content_encoding = encoded_string
)
return response
Uncommenting the line #content_encoding = encoded_string gives me the error:
AssertionError: Header value b'/9j/4AAQSkZJRgABAQAA' is not a string in ('Content-Encoding', b'/9j/4AAQSkZJRgABAQAA....')
FileResponse is used specifically for uploading a file as a response (hence the path argument). In you're case you want to base64-encode the file before uploading it. This means no FileResponse.
Since you've read the file into memory you can just upload the content in a Response.
response = Response(encoded_string,
request=request,
content_type=sContentType+';base64')
I'm not actually sure how content_encoding compares to the ;base64 on the type, but I think the encoding is used more commonly for gzipped content. YMMV.
The error you are seeing is telling you that Content-Type is not a string. Content-Type is an HTTP header. And as far as I know, HTTP headers must be strings.
I believe the base64 encoded file you want to pass as the body of the response. FileResponse is not appropriate here since you presumably want to pass encoded string as the body and FileResponse expects a path that it then reads in and sets the body.
When running a CherryPy app it will send server name tag something like CherryPy/version.
Is it possible to rename/overwrite that from the app without modifying CherryPy so it will show something else?
Maybe something like MyAppName/version (CherryPy/version)
This can now be set on a per application basis in the config file/dict
[/]
response.headers.server = "CherryPy Dev01"
Actually asking on IRC on their official channel fumanchu gived me a more clean way to do this (using latest svn):
import cherrypy
from cherrypy import _cpwsgi_server
class HelloWorld(object):
def index(self):
return "Hello World!"
index.exposed = True
serverTag = "MyApp/%s (CherryPy/%s)" % ("1.2.3", cherrypy.__version__)
_cpwsgi_server.CPWSGIServer.environ['SERVER_SOFTWARE'] = serverTag
cherrypy.config.update({'tools.response_headers.on': True,
'tools.response_headers.headers': [('Server', serverTag)]})
cherrypy.quickstart(HelloWorld())
This string appears to be being set in the CherrPy Response class:
def __init__(self):
self.status = None
self.header_list = None
self._body = []
self.time = time.time()
self.headers = http.HeaderMap()
# Since we know all our keys are titled strings, we can
# bypass HeaderMap.update and get a big speed boost.
dict.update(self.headers, {
"Content-Type": 'text/html',
"Server": "CherryPy/" + cherrypy.__version__,
"Date": http.HTTPDate(self.time),
})
So when you're creating your Response object, you can update the "Server" header to display your desired string. From the CherrPy Response Object documentation:
headers
A dictionary containing the headers of the response. You may set values in
this dict anytime before the finalize phase, after which CherryPy switches
to using header_list ...
EDIT: To avoid needing to make this change with every response object you create, one simple way to get around this is to wrap the Response object. For example, you can create your own Response object that inherits from CherryPy's Response and updates the headers key after initializing:
class MyResponse(Response):
def __init__(self):
Response.__init__(self)
dict.update(self.headers, {
"Server": "MyServer/1.0",
})
RespObject = MyResponse()
print RespObject.headers["Server"]
Then you can can call your object for uses where you need to create a Response object, and it will always have the Server header set to your desired string.