I think you're thinking about it the wrong way. You aren't actually using any
attributes (attributes are on flowfiles, properties on processors), just
utilizing the functions of expression language. So you can manually put in
everything you would normally as a literal then reference the expression
language functions in the expression using ${*expression*}.
That being said, since GetHttp is a source processor you shouldn't be changing
that URL all that often so you could just manually replace the space with "%20"
(URL encoding of a space).
Here is a link to a URL encoder/decoder:
http://meyerweb.com/eric/tools/dencoder/
Joe
- - - - - -
Joseph Percivall
linkedin.com/in/Percivall
e: [email protected]
On Tuesday, December 15, 2015 5:32 PM, Igor Kravzov <[email protected]>
wrote:
But how I define attribute "url" in GetHTTP processor? I tried to ad a
property and got an error that property not defined or supported.
On Tue, Dec 15, 2015 at 4:57 PM, Joe Percivall <
[email protected]> wrote:
> Hello Igor,
>
> The URL property for GetHTTP supports expression language. Check out this
> function:
> https://nifi.apache.org/docs/nifi-docs/html/expression-language-guide.html#urlencode
>
>
> Hope that helps,
> Joe
>
> - - - - - -
> Joseph Percivall
> linkedin.com/in/Percivall
> e: [email protected]
>
>
>
>
> On Tuesday, December 15, 2015 4:46 PM, Igor Kravzov <
> [email protected]> wrote:
>
>
>
> Hi Joe,
>
> Another quick question. How can I encode some part of the URL? Like in
> example bellow after searchpattern=
> <
> http://api.twingly.com/analytics/Analytics.ashx?key=75744154-6ACB-3340-937A-9B5A59FA8F30&searchpattern=boycott&xmloutputversion=2&ts=$%7Bnow():minus(600000):format(
> >
> space
> between Matt Dupe needs to be encoded. Otherwise GetHTTP throws an error.
>
>
> http://api.twingly.com/analytics/Analytics.ashx?key=75744154-6ACB-3340-937A-9B5A59FA8F30&searchpattern=Matt
> Dupe&xmloutputversion=2&ts=${now():minus(600000):format(
> <
> http://api.twingly.com/analytics/Analytics.ashx?key=75744154-6ACB-3340-937A-9B5A59FA8F30&searchpattern=boycott&xmloutputversion=2&ts=$%7Bnow():minus(600000):format(
> >
> "yyyy-MM-dd HH:mm:ss")}&tsTo=${now():format("yyyy-MM-dd HH:mm:ss")}
>
>
> On Mon, Dec 14, 2015 at 6:16 PM, Joe Percivall <
> [email protected]> wrote:
>
> > Glad I could help and thanks!
> > - - - - - -
> > Joseph Percivall
> > linkedin.com/in/Percivall
> > e: [email protected]
> >
> >
> >
> >
> > On Monday, December 14, 2015 6:09 PM, Igor Kravzov <
> [email protected]>
> > wrote:
> > Thank you very much Joe. It worked.
> > And congratulations.
> >
> >
> > On Mon, Dec 14, 2015 at 6:00 PM, Joe Percivall <
> > [email protected]> wrote:
> >
> > > Hello Igor,
> > >
> > > You're having trouble because you have a space in your format of the
> > dates
> > > which need to be URL encoded. You can use the EL method "urlencode" to
> > get
> > > a valid expression like such:
> > >
> > >
> > >
> >
> http://api.twingly.com/analytics/Analytics.ashx?key=75744154-6ACB-3340-937A-9B5A59FA8F30&searchpattern=boycott&xmloutputversion=2&ts=${now():minus(600000):format(
> > "yyyy-MM-dd
> > > HH:mm:ss"):urlEncode()}&tsTo=${now():format("yyyy-MM-dd
> > > HH:mm:ss"):urlEncode()}
> > >
> > > Hope that helps,
> > > Joe
> > > - - - - - -
> > > Joseph Percivall
> > > linkedin.com/in/Percivall
> > > e: [email protected]
> > >
> > >
> > >
> > >
> > > On Monday, December 14, 2015 5:31 PM, Igor Kravzov <
> > [email protected]>
> > > wrote:
> > > Hi guys,
> > >
> > > Why I am getting the error bellow? I am constructing URL like this:
> > >
> > >
> >
> http://api.twingly.com/analytics/Analytics.ashx?key=75744154-6ACB-3340-937A-9B5A59FA8F30&searchpattern=boycott&xmloutputversion=2&ts=${now():minus(600000):format(
> > > "yyyy-MM-dd
> > > HH:mm:ss")}&tsTo=${now():format("yyyy-MM-dd HH:mm:ss")}
> > >
> > >
> > > Am I missing something? Thanks in advance.
> > >
> > >
> > > java.lang.IllegalArgumentException: Illegal character in query at index
> > > 143:
> > >
> > >
> >
> http://api.twingly.com/analytics/Analytics.ashx?key=75744154-6ACB-3340-937A-9B5A59FA8F30&searchpattern=boycott&xmloutputversion=2&ts=2015-12-14
> > > 17:03:46&tsTo=2015-12-14 17:13:46
> > > at java.net.URI.create(Unknown Source) ~[na:1.8.0_66]
> > > at org.apache.http.client.methods.HttpGet.<init>(HttpGet.java:69)
> > > ~[httpclient-4.4.1.jar:4.4.1]
> > > at
> > org.apache.nifi.processors.standard.GetHTTP.onTrigger(GetHTTP.java:444)
> > > ~[na:na]
> > > at
> > >
> > >
> >
> org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1146)
> > > ~[nifi-framework-core-0.4.0.jar:0.4.0]
> > > at
> > >
> > >
> >
> org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:139)
> > > [nifi-framework-core-0.4.0.jar:0.4.0]
> > > at
> > >
> > >
> >
> org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:49)
> > > [nifi-framework-core-0.4.0.jar:0.4.0]
> > > at
> > >
> > >
> >
> org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:119)
> > > [nifi-framework-core-0.4.0.jar:0.4.0]
> > > at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
> > > [na:1.8.0_66]
> > > at java.util.concurrent.FutureTask.runAndReset(Unknown Source)
> > > [na:1.8.0_66]
> > > at
> > >
> > >
> >
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown
> > > Source) [na:1.8.0_66]
> > > at
> > >
> > >
> >
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown
> > > Source) [na:1.8.0_66]
> > > at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
> > > [na:1.8.0_66]
> > > at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
> > > [na:1.8.0_66]
> > > at java.lang.Thread.run(Unknown Source) [na:1.8.0_66]
> > > Caused by: java.net.URISyntaxException: Illegal character in query at
> > index
> > > 143:
> > >
> > >
> >
> http://api.twingly.com/analytics/Analytics.ashx?key=75744154-6ACB-3340-937A-9B5A59FA8F30&searchpattern=boycott&xmloutputversion=2&ts=2015-12-14
> > > 17:03:46&tsTo=2015-12-14 17:13:46
> > > at java.net.URI$Parser.fail(Unknown Source) ~[na:1.8.0_66]
> > > at java.net.URI$Parser.checkChars(Unknown Source) ~[na:1.8.0_66]
> > > at java.net.URI$Parser.parseHierarchical(Unknown Source) ~[na:1.8.0_66]
> > > at java.net.URI$Parser.parse(Unknown Source) ~[na:1.8.0_66]
> > > at java.net.URI.<init>(Unknown Source) ~[na:1.8.0_66]
> > > ... 14 common frames omitted
> > >
> >
>
