date:20130223



 I tend to think clojure is in a similar position - fast enough for the 
 vast majority of things (ymmv of course - depending on what your domain is) 
 and if you meet a situation like this where optimising the clojure becomes 
 too ugly, you can drop down to Java (or indeed C!)


Not quite, I'd say. In Java, and I bet it wasn't very different with C in 
the '80s, the most natural way to solve a problem is already the most 
performant, or at least within 50% of that. If you ever need to optimize, 
it means you are doing something very, very critical indeed, and probably 
involving native system resources in a way not idiomatically supported by 
Java's abstractions.

In Clojure this is nohwere close to being true. Idiomatic Clojure is 
concise, expressive, and *slow.* Not 50% slower; not 100% slower; more like 
100 *times* slower. Optimized Clojure is like a completely different 
language. Have you ever experienced the culture shock of opening core.clj? 
On the other hand, have you ever studied String.java or ArrayList.java? No 
surprises there; just the basic Java you write every day.

On the other hand, an attitude that you are nevertheless likely to 
encounter on this grous is It's not Clojure; it's you. Clojure already has 
all you need to achieve native performance. If that's not what you are 
seeing, don't blame it on Clojure. Many posters feel put down by that kind 
of attitude and the worst part it, it really isn't their fault.

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Re: Clojure Performance For Expensive Algorithms

From my (admittedly limited) experience with Scala, yes, you can freely use 
reassignable local vars and write pretty much the same loops as in Java, 
but on the other hand there are many non-obvious performance pitfalls (like 
simply using the built-in *for comprehension*) and the optimized library 
code is a heavy mess. With Clojure, you open core.clj and stand a good 
chance of learning something; with Scala, you just stare in total confusion.

I'd be curious to hear some opinions on this from the Scala community.  I 
 have only been limited by Clojure's performance on one particular program 
 where it was truly necessary to drop down to Java, for the most part 
 performance has been good enough that it has been a non-issue for me.  But 
 for those who regularly need to write high-performance code, isn't that 
 supposed to be Scala's sweet spot?  The promise of Scala is that it allows 
 you to do a reasonable amount of high-level functional coding while also 
 making it convenient to write mutable, Java-like performance code using the 
 same language with the same semantics.  If there are any members of this 
 list who straddle the two worlds of Clojure and Scala, I'd be interested in 
 knowing whether Scala delivers on that promise of being able to write both 
 high-level and performant low-level code, and how much of a difference this 
 makes in practice versus Clojure's approach of expecting the programmer to 
 drop down to Java for the best performance.
  

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protocol granularity

2013-02-23 Thread Jim - FooBar();


Hi everyone,

I'm facing a little problem when extending protocols in a mix of 
inheriting and implementing classes...Let me explain:


stanford-corenlp defines a top level interface called Annotator (with 
a single 'annotatate' method signature'). It also defines a class called 
AnnotationPipeline which implements Annotator and a class 
StanfordCoreNLP which extends AnnotationPipeline and is essentially the 
main entry point for the library...Under this class (in the hierarchy), 
one can find all the concrete implementations of several 'Annotators'. 
Now the problem is this: All these Annotators are not pipelines (or 
workflows) they are single components in a sense, but they do implement 
Annotator as does AnnotationPipeline. I need to extend my own protocol 
IWorkflow to AnnotationPipeline and my own 'IComponent' to all the 
single-Annotators without  having them satisfy IWorkflow. It is fine if 
AnnotationPipeline satisfies IComponent and NOT the other way round 
(components satisfying IWorkflow).


Mybest attempt was this:

(defn extend-stanford-core
A single fn to extend to all stanford-corenlp modules (or 'annotators' 
as they call them). 

[]
(extend-type edu.stanford.nlp.pipeline.AnnotationPipeline
IWorkflow
(deploy [this ^String text]
  (.annotate this text))
(appendComponent [this co]
  (.addAnnotator this (reify edu.stanford.nlp.pipeline.Annotator
  (annotate [this annotation]
(run co annotation) )
(extend-type edu.stanford.nlp.pipeline.StanfordCoreNLP
IComponent
 (run [this ^String text]
  (let [ann (edu.stanford.nlp.pipeline.Annotation. text)]
(.annotate this ann) ann)))
)

However, as I said, a stanfordNLP consumer will most likely use the 
StanfordCoreNLP class to create the single-annotators...Consequently, 
his 'components' will also satisfy IWorkflow (because StanfordCoreNLP 
inherits from AnnotationPipeline),  which is not desirable...


any thoughts?

Jim

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creating code stubs to use inside an extend-protocol form

2013-02-23 Thread Jim - FooBar();

I seem to be unable to quote a form and then repeatedly pass it inside 
the extend-protocol macro...something like this:


(def ^:private co-stub
'(run [this ^String text]
   (let [ann (edu.stanford.nlp.pipeline.Annotation. text)]
 (.annotate this ann) ann)))


(extend-protocol IComponent
edu.stanford.nlp.pipeline.POSTaggerAnnotator  co-stub
edu.stanford.nlp.pipeline.PTBTokenizerAnnotator   co-stub
edu.stanford.nlp.pipeline.WordsToSentencesAnnotator co-stub
edu.stanford.nlp.pipeline.CleanXmlAnnotator   co-stub
edu.stanford.nlp.pipeline.MorphaAnnotator co-stub
edu.stanford.nlp.pipeline.NERCombinerAnnotatorco-stub
edu.stanford.nlp.pipeline.RegexNERAnnotator   co-stub
edu.stanford.nlp.pipeline.TrueCaseAnnotator   co-stub
edu.stanford.nlp.pipeline.ParserAnnotator co-stub
edu.stanford.nlp.pipeline.DeterministicCorefAnnotator co-stub
)

neither quoted version nor the back-quoted version work...The former 
throws :
ClassCastException clojure.lang.PersistentList cannot be cast to 
java.lang.Class  clojure.core/implements? (core_deftype.clj:512)


and the latter throws:

ClassCastException clojure.lang.Cons cannot be cast to java.lang.Class  
clojure.core/implements? (core_deftype.clj:512)


any macro-gurus around?

Jim

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Re: Clojure Performance For Expensive Algorithms

2013-02-23 Thread David Nolen

Lisp programmers know the value of everything and the cost of nothing ;)

On Saturday, February 23, 2013, Marko Topolnik wrote:

 I tend to think clojure is in a similar position - fast enough for the
 vast majority of things (ymmv of course - depending on what your domain is)
 and if you meet a situation like this where optimising the clojure becomes
 too ugly, you can drop down to Java (or indeed C!)


 Not quite, I'd say. In Java, and I bet it wasn't very different with C in
 the '80s, the most natural way to solve a problem is already the most
 performant, or at least within 50% of that. If you ever need to optimize,
 it means you are doing something very, very critical indeed, and probably
 involving native system resources in a way not idiomatically supported by
 Java's abstractions.

 In Clojure this is nohwere close to being true. Idiomatic Clojure is
 concise, expressive, and *slow.* Not 50% slower; not 100% slower; more
 like 100 *times* slower. Optimized Clojure is like a completely different
 language. Have you ever experienced the culture shock of opening core.clj?
 On the other hand, have you ever studied String.java or ArrayList.java? No
 surprises there; just the basic Java you write every day.

 On the other hand, an attitude that you are nevertheless likely to
 encounter on this grous is It's not Clojure; it's you. Clojure already has
 all you need to achieve native performance. If that's not what you are
 seeing, don't blame it on Clojure. Many posters feel put down by that kind
 of attitude and the worst part it, it really isn't their fault.

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datomic + clojure + clojurescript examples

2013-02-23 Thread Mond Ray

My fellow Clojurians,

I am having a trouble hunting down an example of the above stack for 
clojure applications.

Can anyone point me in the right direction?

Thanks

Ray

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Re: nREPL + Emacs: How to get new definitions to load reliably?

2013-02-23 Thread Stuart Sierra

Hi Karl,

I've added an experimental feature in tools.namespace 0.2.3-SNAPSHOT which
tries to recover the namespace configuration in your REPL after an error
during reload. What that hopefully means is you can call `refresh` as you
normally would even after an error.

Updated docs 
herehttps://github.com/clojure/tools.namespace/blob/6723baff2c17e5ad9dde6024f4e35fe81bb0361a/README.md#handling-errors

To get it in Leiningen:

:dependencies [[org.clojure/tools.namespace 0.2.3-SNAPSHOT]]
:repositories {sonatype-oss-public
   https://oss.sonatype.org/content/groups/public/}


Let me know if that helps.

Thanks,
-S



On Thu, Feb 21, 2013 at 3:23 PM, Karl Smeltzer karl.smelt...@gmail.comwrote:

 Thanks for that helper function.  I suppose that's as close as I'll
 get for the time being.

 On Thu, Feb 21, 2013 at 6:03 AM, Stuart Sierra
 the.stuart.sie...@gmail.com wrote:
  For what it's worth, I tried using tools.namespace but if I
  (refresh) code that doesn't compile, then suddenly the refresh
  symbol is out of scope and I'm back to square one.
 
 
  You can still recover from this: just call 'refresh' by its
  fully-qualified name:
 
  (clojure.tools.namespace.repl/refresh)
 
  I use a (hackish) Emacs helper function to do this in nREPL:
  http://bit.ly/WUqLE4
 
 
  -S
 
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Re: Clojure Performance For Expensive Algorithms

:)

On the other hand, the Common Lisp movement of the '80s was brimming with 
the can-do attitude of achieving native performance. From Steele, Gabriel, *The 
Evolution of Lisp*:

the two strongest voices—Steele and Gabriel—were feeling their oats over 
 their ability to write a powerful compiler to foil the complexities of 
 Common Lisp. One often heard them, and later Moon, remark that a 
 “suﬃciently smart compiler” could solve a particular problem. Pretty soon 
 the core group was quoting this “SSC” argument regularly.




On Saturday, February 23, 2013 3:26:24 PM UTC+1, David Nolen wrote:

 Lisp programmers know the value of everything and the cost of nothing ;)

 On Saturday, February 23, 2013, Marko Topolnik wrote:



 In Clojure this is nohwere close to being true. Idiomatic Clojure is 
 concise, expressive, and *slow.* Not 50% slower; not 100% slower; more 
 like 100 *times* slower. Optimized Clojure is like a completely 
 different language. Have you ever experienced the culture shock of opening 
 core.clj? On the other hand, have you ever studied String.java or 
 ArrayList.java? No surprises there; just the basic Java you write every day.

 

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Re: Redefinition of datatypes

2013-02-23 Thread Stuart Sierra

Hi Ambrose,

I would try to help diagnose this, but I can't even try to compile 
core.typed in its present state because of dependencies: core.typed 
declares a dependency on analyze 
0.3.1-SNAPSHOThttps://github.com/clojure/core.typed/blob/78d09859cee78967e9dd0ee7d74e0f52bd3be6f1/project.clj#L3,
 
which I cannot find anywhere, including the 
sourcehttps://github.com/frenchy64/analyzeon GitHub.

Even if we fix that, there are larger issues with releasing core.typed as a 
contrib library. The Maven-based builds on build.clojure.org do not include 
Clojars.org in their list of repositories. All of the contrib libraries 
released so far have no dependencies other than Clojure itself. There has 
been an *implicit* policy that contrib libraries may not have external 
dependencies, on which Rich has the final say.

Furthermore, according to the policy of the Maven Central 
Repositoryhttp://search.maven.org/, 
we cannot deploy anything which depends on third-party repositories. 
Therefore we cannot deploy core.typed to the Central Repository unless all 
its dependencies are also deployed there.

I will do whatever I can to help you get core.typed up and running on 
build.clojure.org, but these are the constraints we have to work in. Feel 
free to contact me off-list if you have additional questions.

Thanks,
-S




On Friday, February 22, 2013 2:26:31 AM UTC-5, Ambrose Bonnaire-Sergeant 
wrote:

 Hi,

 I don't understand why this `assert` fails when the namespace is compiled 
 with `compile`.
 It seems like the datatype A is being compiled twice.

 (ns mvn-test.core)

 (deftype A [])

 (assert (= (class (A.))
(class ((fn [] (A.))

 user= (compile 'mvn-test.core)
 CompilerException java.lang.AssertionError: Assert failed: (= (class (A.)) 
 (class ((fn [] (A.), compiling:(core.clj:5:1) 

 Here is the project.clj:

 (defproject mvn-test 0.0.1-SNAPSHOT
   :source-paths [src/main/clojure]
   :dependencies [[org.clojure/clojure 1.5.0-RC16]])

 I found this behaviour was the root cause of why `mvn test` fails in 
 core.typed,
 while `lein test` works perfectly.

 Any pointers would be appreciated.

 Thanks,
 Ambrose


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Re: Redefinition of datatypes

2013-02-23 Thread Ambrose Bonnaire-Sergeant

Hi Stuart,

Sorry about that, I just changed it to analyze 0.3.0, which is on Clojars.
Try pulling again.

As for dependencies:
- the Trammel dep could be refactored to use core.contracts
- I'm happy to offer analyze as a contrib project if needed. It's crucial
to core.typed.
- other deps can be deleted easily.

Thanks,
Ambrose

On Sun, Feb 24, 2013 at 12:35 AM, Stuart Sierra the.stuart.sie...@gmail.com
 wrote:

 Hi Ambrose,

 I would try to help diagnose this, but I can't even try to compile
 core.typed in its present state because of dependencies: core.typed
 declares a dependency on analyze 
 0.3.1-SNAPSHOThttps://github.com/clojure/core.typed/blob/78d09859cee78967e9dd0ee7d74e0f52bd3be6f1/project.clj#L3,
 which I cannot find anywhere, including the 
 sourcehttps://github.com/frenchy64/analyzeon GitHub.

 Even if we fix that, there are larger issues with releasing core.typed as
 a contrib library. The Maven-based builds on build.clojure.org do not
 include Clojars.org in their list of repositories. All of the contrib
 libraries released so far have no dependencies other than Clojure itself.
 There has been an *implicit* policy that contrib libraries may not have
 external dependencies, on which Rich has the final say.

 Furthermore, according to the policy of the Maven Central 
 Repositoryhttp://search.maven.org/,
 we cannot deploy anything which depends on third-party repositories.
 Therefore we cannot deploy core.typed to the Central Repository unless all
 its dependencies are also deployed there.

 I will do whatever I can to help you get core.typed up and running on
 build.clojure.org, but these are the constraints we have to work in. Feel
 free to contact me off-list if you have additional questions.

 Thanks,
 -S




 On Friday, February 22, 2013 2:26:31 AM UTC-5, Ambrose Bonnaire-Sergeant
 wrote:

 Hi,

 I don't understand why this `assert` fails when the namespace is compiled
 with `compile`.
 It seems like the datatype A is being compiled twice.

 (ns mvn-test.core)

 (deftype A [])

 (assert (= (class (A.))
(class ((fn [] (A.))

 user= (compile 'mvn-test.core)
 CompilerException java.lang.AssertionError: Assert failed: (= (class
 (A.)) (class ((fn [] (A.), compiling:(core.clj:5:1)

 Here is the project.clj:

 (defproject mvn-test 0.0.1-SNAPSHOT
   :source-paths [src/main/clojure]
   :dependencies [[org.clojure/clojure 1.5.0-RC16]])

 I found this behaviour was the root cause of why `mvn test` fails in
 core.typed,
 while `lein test` works perfectly.

 Any pointers would be appreciated.

 Thanks,
 Ambrose

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Re: A Working nrepl-ritz Setup?

2013-02-23 Thread bruce li

Hello,

I managed to get nrepl-ritz going, but I'm experiencing the following
annoying things:

1. When I switched on M-x nrepl-ritz-break-on-exception, I'm unable to
disable it. When I called the command with a prefix(by default M--), it is
still in action.  Is there a way to disable it? Otherwise, I'll need to
spend another 20-30s to re-initialize the repl and reload the work I'm doing

2. This is not a serious problem but somehow a little annoying: I cannot
enable ac-nrepl with ritz on. Otherwise, it will hang forever (unless I
kill emacs). Is there a possible way to integrate it with ac-nrepl? Or is
there any better alternatives? PS. I do miss slime fuzzy complete when I
program common lisp though. Also, can nrepl by default make completions on
Java methods? I can only find it possible in ac-nrepl.

Any help would be appreciated.

Bruce Li



2013/1/20 fb friedrich.boe...@gmail.com

 On Windows, I had to put the profiles.clj in the Windows home
 directory C:\Users\%user name%\AppData\Roaming, where also .emacs.d
 reesides (see also
 https://github.com/pallet/ritz/issues/28#issuecomment-12460118).

 -fb

 Am Mittwoch, 5. Dezember 2012 18:24:20 UTC+1 schrieb Hugo Duncan:

 Timothy Washington twas...@gmail.com writes:

 
  1) I start from an empty *~/.emacs.d/*
  2) I then populate init.el from the example in
  ritz/nreplhttps://github.com/**pallet/ritz/tree/develop/nreplhttps://github.com/pallet/ritz/tree/develop/nrepl
 **
 
  3) I open a lein project and run `*M-x nrepl-ritz-jack-in*`
 
  **) The error I get back is:
 
  *error in process sentinel: Could not start nREPL server: 'ritz-nrepl'
 is
  not a task. See 'lein help'.*

 This is actually a lein message, and it is saying that the lein-ritz
 plugin is not in the :plugins vector of a lein profile. There is an
 example of setting this up in ~/.lein/profiles.clj on the page you
 linked.

 HTH,

 Hugo

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Re: Redefinition of datatypes

2013-02-23 Thread Chas Emerick

On Feb 23, 2013, at 11:35 AM, Stuart Sierra wrote:

 Furthermore, according to the policy of the Maven Central Repository, we 
 cannot deploy anything which depends on third-party repositories. Therefore 
 we cannot deploy core.typed to the Central Repository unless all its 
 dependencies are also deployed there.

Straying further off-topic, but: FWIW, unless they've changed the verification 
of POMs being promoted recently, that's not so.  The official guide to OSS 
deployment only says it's strongly discouraged 
(https://docs.sonatype.org/display/Repository/Sonatype+OSS+Maven+Repository+Usage+Guide),
 and links to blog posts that indicate that Sonatype is (was?) planning on 
rewriting POMs to remove external repository definitions, but tons of artifacts 
in central still contain them, e.g.:

http://repo1.maven.org/maven2/org/openid4java/openid4java-nodeps/0.9.6/openid4java-nodeps-0.9.6.pom

(…which refers to a now-defunct Guice repository, thus highlighting the 
rationale for the proposed no-external-repositories policy.)

Cheers,

- Chas

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Re: Clojure Performance For Expensive Algorithms

Stack analysis is quite a brittle mechanism, as far as I'm aware of. As 
soon as you pass the object to any method, even if private, the object will 
not be stack-allocated. The way Clojure code is typically written, and the 
way it is compiled, some method call will almost certainly get involved.

On Saturday, February 23, 2013 9:14:12 PM UTC+1, Nicolas Oury wrote:

 On Fri, Feb 22, 2013 at 8:01 PM, Marko Topolnik 
 marko.t...@gmail.comjavascript:
  wrote:


 Forgot to mention another hugely important factor: heap-allocated objects 
 spell disaster for CPU cachelines. With today's architectures the 
 difference between a cache hit and a cache miss is like the difference 
 between catching your bus to work and having to walk instead. In our 
 example I would have to be careful to reuse the same deftype instance for 
 all inner loop runs, but then I'd need even more code to make sure the 
 values are reset before entering. The result would be messy, brittle code 
 with higher-level logic scattered between all the housekeeping constructs.



  Wouldn't the object be stack allocated by escape analysis?


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Re: Can't type-hint a def with ^objects

2013-02-23 Thread Michael Klishin

2013/2/24 Marko Topolnik marko.topol...@gmail.com

 Is this behavior specified? It certainly doesn't make sense from a
 language user perspective.


^doubles can be used to avoid boxing on the hot code path, what would you
gain with ^objects?
-- 
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http://twitter.com/michaelklishin

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Re: Can't type-hint a def with ^objects

Actually, ^doubles can be used for two separate things, one of which 
applies to ^objects as well: avoid reflection and avoid  boxing/unboxing. I 
do need to avoid reflection.

On Saturday, February 23, 2013 10:00:58 PM UTC+1, Michael Klishin wrote:


 2013/2/24 Marko Topolnik marko.t...@gmail.com javascript:

 Is this behavior specified? It certainly doesn't make sense from a 
 language user perspective.


 ^doubles can be used to avoid boxing on the hot code path, what would you 
 gain with ^objects?
 -- 
 MK

 http://github.com/michaelklishin
 http://twitter.com/michaelklishin
  

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[ANN] edn-java 0.4.0 a library to read and write edn data

2013-02-23 Thread Ben Smith-Mannschott

I'm happy to report that edn-java is now available on Maven Central.

What is edn-java?
-

Edn-java is a Java library for reading and writing edn data.
It has no dependencies other than Java 1.6.x or later.

A more detailed description, including usage examples is available
here: http://edn-java.bpsm.us

What is edn?


Edn is an extensible data notation used used by Datomic and other
applications as a data transfer format. It supports a rich set of
built-in elements, and the definition of extension elements in terms
of the others. edn is a system for the conveyance of values. It is
not a type system, and has no schemas. Edn is suitable for streaming
and interactive applications since there is no enclosing element at
the top level.

(Paraphrased form https://github.com/edn-format/edn)

Where can I get edn-java?
-

Edn-java is licensed under the Eclipse Public License 1.0.

Sources are on github: https://github.com/bpsm/edn-java
Patches  issues welcomed!

Maven coordinates are:

dependency
  groupIdus.bpsm/groupId
  artifactIdedn-java/artifactId
  version0.4.0/version
/dependency

Caveats
---

The Parser seems pretty solid (for 0.4.0). I use it in production.
I don't anticipate breaking API changes there.

Printing support is not as far along as parsing. It appears to work
correctly, but does not pretty print. Printing APIs may change.

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How does clj-http work regarding https?


This might be a dumb How does the Internet work kind of question.

I have been asked to pull data from Omniture, using the Omniture API.
I thought this would take me an hour, but I've been working on this
for 3 days now. I keep getting authentication errors.

I became curious about exactly what code was sending to Omniture, so I
downloaded Charles, the network debugging tool:

http://www.charlesproxy.com/

I am using clj-http to make the POST. The post is suppose to be
https.

This is the thing that surprises me: If I use http then I can see all
the headers in Charles, and they all look correct. But if I use https
(which is what I need to use) then there are no headers that I can see
in Charles.

Is that because Charles does not want to show me a bunch of encrypted
garbage? Or is clj-http not adding in the headers with https? Maybe I
need a special setting to get clj-http to correctly send to https? (I
have not been able to find any such setting.)

This is the code where I use clj-http (here I call http-client):

(defn omniture-call-api [url-with-queue-method api-payload headers]
  (timbre/spy :debug  return value of omniture-call-api 
  (try+
(http-client/post url-with-queue-method
  {:body api-payload
   :headers {X-Api-Version 2
 X-WSSE headers}
   :content-type :json
   :socket-timeout 4000
   :conn-timeout 4000
   :accept :json
   :client-params
{http.protocol.allow-circular-redirects false
   http.useragent
clj-http}})
(catch Object o (println (pp/pprint o))

The url is:

https://api2.omniture.com/admin/1.3/rest/?method=Report.QueueRanked

At first I assumed this was a problem with Omniture's code. I have
asked several question on the Developer forum at Omniture, but no one
there could help me (Adobe has apparently cut most of the developer
support since Adobe bought Omniture in 2009). However, I am now
wondering if maybe I am doing this POST incorrectly.

I am puzzled by something else as well: I call this function once, yet
Charles shows 4 calls being made to Omniture, and my own code, when it
prints data to the terminal, seems to show many requests being made.
Why would that be?

Again, if I change the URL so it uses http then in Charles I can see
all the headers that suppose to be in this line of code:

X-WSSE headers

and the headers look correct (I posted them to the developer forums at
Omniture and the one guy from Omniture who gave it a look felt there
was nothing terribly amiss -- but he couldn't rule anything out.)

But If I change the URL to use https, then I see no headers in
Charles. Why is that?

 lawrence







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Re: Can't type-hint a def with ^objects

2013-02-23 Thread Michael Klishin

2013/2/24 Marko Topolnik marko.topol...@gmail.com

 I do need to avoid reflection.


Then use ^[Ljava.lang.Object;
and friends, it works just fine.
-- 
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http://twitter.com/michaelklishin

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Re: Can't type-hint a def with ^objects

Thank you, I'm using it and it does work. However, there is presumably a 
good reason for the existence of the ^objects annotation, so the question 
remains whether this is a) specified behavior and b) the way it is planned 
to stay.

On Saturday, February 23, 2013 10:32:31 PM UTC+1, Michael Klishin wrote:


 2013/2/24 Marko Topolnik marko.t...@gmail.com javascript:

 I do need to avoid reflection.


 Then use ^[Ljava.lang.Object;
 and friends, it works just fine.
 -- 
 MK

 http://github.com/michaelklishin
 http://twitter.com/michaelklishin
  

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Re: How does clj-http work regarding https?


When I turn on:

:debug true
:debug-body true

I get all that follows. Which mostly looks right, I guess. But why
don't I see the headers in Charles?

I'll go back to assuming this is a problem with Omniture, but I would
be grateful if anyone could glance over this output and tell me if
anything looks amiss. I took out the username and password but
otherwise left in all the details.


{:scheme :https,
 :http-url
 https://api2.omniture.com/admin/1.3/rest/?
method=Report.QueueOvertime,
 :conn-timeout 4000,
 :debug-body true,
 :request-method :post,
 :query-string method=Report.QueueOvertime,
 :content-type :json,
 :uri /admin/1.3/rest/,
 :server-name api2.omniture.com,
 :headers
 {accept-encoding gzip, deflate,
  accept application/json,
  content-type application/json,
  x-api-version 2,
  x-wsse
  UsernameToken Username=\xxx\, PasswordDigest=\xxx\, Nonce=
\Y2FiOGM3YjAxY2QyY2YwMTdmZTY2YTIzNzNjNzU2OWI=\, Created=
\2013-02-23T16:40:14Z},
 :socket-timeout 4000,
 :debug true,
 :body-type org.apache.http.entity.StringEntity,
 :server-port nil,
 :character-encoding UTF-8,
 :client-params
 {http.useragent clj-http,
  http.protocol.allow-circular-redirects false},
 :body
 {\reportDescription\ : {
                          \reportSuiteID\ : \timeoutny\,
                          \dateFrom\ : \2013-02-01\,
                          \dateTo\ : \2013-02-12\,
                          \dateGranularity\ : \hourly\,
                          \metrics\ : [
                                         {
                                          \id\ : \pageViews\
                                          },
                                         {
                                          \id\ : \visits\
                                          }
                                         ],
                          \validate\:\true\
                          }
                  },
 :user-info nil}

HttpRequest:
{:requestLine
 #BasicRequestLine POST 
https://api2.omniture.com/admin/1.3/rest/?method=Report.QueueOvertime
HTTP/1.1,
 :protocolVersion #HttpVersion HTTP/1.1,
 :params
 #BasicHttpParams org.apache.http.params.BasicHttpParams@47b0081,
 :method POST,
 :entity #StringEntity org.apache.http.entity.StringEntity@117eb1bd,
 :class org.apache.http.client.methods.HttpPost,
 :allHeaders
 [#BasicHeader Connection: close,
  #BasicHeader accept-encoding: gzip, deflate,
  #BasicHeader accept: application/json,
  #BasicHeader content-type: application/json,
  #BasicHeader x-api-version: 2,
  #BasicHeader x-wsse: UsernameToken Username=xxx,
PasswordDigest=xxx,
Nonce=Y2FiOGM3YjAxY2QyY2YwMTdmZTY2YTIzNzNjNzU2OWI=,
Created=2013-02-23T16:40:14Z],
 :aborted false,
 :URI
 #URI https://api2.omniture.com/admin/1.3/rest/?method=Report.QueueOvertime}



Sadly, Omniture doesn't offer any support service, so I am not able to
contact them directly and get any help from them. (They have support
contracts that cost  many thousands of dollars, but my company would
not be interested in that kind of expense.)








{:trace-redirects
 [https://api2.omniture.com/admin/1.3/rest/?
method=Report.QueueOvertime],
 :request-time 1064,
 :status 401,
 :headers
 {date Sat, 23 Feb 2013 21:40:15 GMT,
  server Omniture AWS/2.0.0,
  www-authenticate
  WSSE realm=\Omniture REST Api\, profile=\UsernameToken\,
  xserver www336,
  content-length 46,
  content-type application/json,
  connection close},
 :body {\error\:\Unable to validate authentication.\}}
nil
Request: org.apache.http.entity.StringEntity



On Feb 23, 4:18 pm, larry google groups lawrencecloj...@gmail.com
wrote:
 This might be a dumb How does the Internet work kind of question.

 I have been asked to pull data from Omniture, using the Omniture API.
 I thought this would take me an hour, but I've been working on this
 for 3 days now. I keep getting authentication errors.

 I became curious about exactly what code was sending to Omniture, so I
 downloaded Charles, the network debugging tool:

 http://www.charlesproxy.com/

 I am using clj-http to make the POST. The post is suppose to be
 https.

 This is the thing that surprises me: If I use http then I can see all
 the headers in Charles, and they all look correct. But if I use https
 (which is what I need to use) then there are no headers that I can see
 in Charles.

 Is that because Charles does not want to show me a bunch of encrypted
 garbage? Or is clj-http not adding in the headers with https? Maybe I
 need a special setting to get clj-http to correctly send to https? (I
 have not been able to find any such setting.)

 This is the code where I use clj-http (here I call http-client):

 (defn omniture-call-api [url-with-queue-method api-payload headers]
   (timbre/spy :debug  return value of omniture-call-api 
               (try+
                 (http-client/post url-with-queue-method
                                   {:body api-payload
                                    :headers {X-Api-Version 2

Re: Clojure Performance For Expensive Algorithms

2013-02-23 Thread Geo

Just wanted to say I am getting a lot out of this discussion.

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Re: How does clj-http work regarding https?

Try adding

:insecure? true

to the map. Charles dynamically generates a cert pretending to be the
target host when acting as an ssl proxy, and clj-http probably has to be
told to accept it.




On Sat, Feb 23, 2013 at 4:18 PM, larry google groups 
lawrencecloj...@gmail.com wrote:


 This might be a dumb How does the Internet work kind of question.

 I have been asked to pull data from Omniture, using the Omniture API.
 I thought this would take me an hour, but I've been working on this
 for 3 days now. I keep getting authentication errors.

 I became curious about exactly what code was sending to Omniture, so I
 downloaded Charles, the network debugging tool:

 http://www.charlesproxy.com/

 I am using clj-http to make the POST. The post is suppose to be
 https.

 This is the thing that surprises me: If I use http then I can see all
 the headers in Charles, and they all look correct. But if I use https
 (which is what I need to use) then there are no headers that I can see
 in Charles.

 Is that because Charles does not want to show me a bunch of encrypted
 garbage? Or is clj-http not adding in the headers with https? Maybe I
 need a special setting to get clj-http to correctly send to https? (I
 have not been able to find any such setting.)

 This is the code where I use clj-http (here I call http-client):

 (defn omniture-call-api [url-with-queue-method api-payload headers]
   (timbre/spy :debug  return value of omniture-call-api 
   (try+
 (http-client/post url-with-queue-method
   {:body api-payload
:headers {X-Api-Version 2
  X-WSSE headers}
:content-type :json
:socket-timeout 4000
:conn-timeout 4000
:accept :json
:client-params
 {http.protocol.allow-circular-redirects false
http.useragent
 clj-http}})
 (catch Object o (println (pp/pprint o))

 The url is:

 https://api2.omniture.com/admin/1.3/rest/?method=Report.QueueRanked

 At first I assumed this was a problem with Omniture's code. I have
 asked several question on the Developer forum at Omniture, but no one
 there could help me (Adobe has apparently cut most of the developer
 support since Adobe bought Omniture in 2009). However, I am now
 wondering if maybe I am doing this POST incorrectly.

 I am puzzled by something else as well: I call this function once, yet
 Charles shows 4 calls being made to Omniture, and my own code, when it
 prints data to the terminal, seems to show many requests being made.
 Why would that be?

 Again, if I change the URL so it uses http then in Charles I can see
 all the headers that suppose to be in this line of code:

 X-WSSE headers

 and the headers look correct (I posted them to the developer forums at
 Omniture and the one guy from Omniture who gave it a look felt there
 was nothing terribly amiss -- but he couldn't rule anything out.)

 But If I change the URL to use https, then I see no headers in
 Charles. Why is that?

  lawrence







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Re: How does clj-http work regarding https?

Try adding

:insecure? true

to the map. Charles dynamically generates a cert pretending to be the
target host when acting as an ssl proxy, and clj-http probably has to be
told to accept it.

Okay, I've done so, but I don't think I understand what you are
telling me. Are you saying that clj-http won't send its POST if it
feels the cert is false?

Charles has consistently said, in each report, SSL Proxying not
enabled for this host: enable in Proxy Settings, SSL locations

And I've made the change you suggested, but I still see that message.

On Feb 23, 5:24 pm, Jonah Benton jo...@jonah.com wrote:
Try adding

:insecure? true

to the map. Charles dynamically generates a cert pretending to be the
target host when acting as an ssl proxy, and clj-http probably has to be
told to accept it.

On Sat, Feb 23, 2013 at 4:18 PM, larry google groups

lawrencecloj...@gmail.com wrote:

This might be a dumb How does the Internet work kind of question.

I have been asked to pull data from Omniture, using the Omniture API.
I thought this would take me an hour, but I've been working on this
for 3 days now. I keep getting authentication errors.

I became curious about exactly what code was sending to Omniture, so I
downloaded Charles, the network debugging tool:

http://www.charlesproxy.com/

I am using clj-http to make the POST. The post is suppose to be
https.

This is the thing that surprises me: If I use http then I can see all
the headers in Charles, and they all look correct. But if I use https
(which is what I need to use) then there are no headers that I can see
in Charles.

Is that because Charles does not want to show me a bunch of encrypted
garbage? Or is clj-http not adding in the headers with https? Maybe I
need a special setting to get clj-http to correctly send to https? (I
have not been able to find any such setting.)

This is the code where I use clj-http (here I call http-client):

(defn omniture-call-api [url-with-queue-method api-payload headers]
(timbre/spy :debug return value of omniture-call-api
(try+
(http-client/post url-with-queue-method
{:body api-payload
:headers {X-Api-Version 2
X-WSSE headers}
:content-type :json
:socket-timeout 4000
:conn-timeout 4000
:accept :json
:client-params
{http.protocol.allow-circular-redirects false
http.useragent
clj-http}})
(catch Object o (println (pp/pprint o))

The url is:

https://api2.omniture.com/admin/1.3/rest/?method=Report.QueueRanked

At first I assumed this was a problem with Omniture's code. I have
asked several question on the Developer forum at Omniture, but no one
there could help me (Adobe has apparently cut most of the developer
support since Adobe bought Omniture in 2009). However, I am now
wondering if maybe I am doing this POST incorrectly.

I am puzzled by something else as well: I call this function once, yet
Charles shows 4 calls being made to Omniture, and my own code, when it
prints data to the terminal, seems to show many requests being made.
Why would that be?

Again, if I change the URL so it uses http then in Charles I can see
all the headers that suppose to be in this line of code:

X-WSSE headers

and the headers look correct (I posted them to the developer forums at
Omniture and the one guy from Omniture who gave it a look felt there
was nothing terribly amiss -- but he couldn't rule anything out.)

But If I change the URL to use https, then I see no headers in
Charles. Why is that?

lawrence

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functions as return values

2013-02-23 Thread Larry Travis

In Clojure, if I have a function call that asks for return of a 
function, for example


user ((fn [a] (fn [b] (+ (inc a) (* b b 5)

I get the function name

#user$eval4164$fn__4165$fn__4166 user$eval4164$fn__4165$fn__4166@29770daa

But what I would like to get is an expression that defines this 
function, for example


(fn [b] (+ 6 (* b b)))

Is there some way that I can suppress the evaluation of this expression?

  --Larry




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Re: How does clj-http work regarding https?

Any idea why a single call to clj-http/post causes 4 transactions to
appear in Charles?

On Feb 23, 5:47 pm, larry google groups lawrencecloj...@gmail.com
wrote:
Try adding

:insecure? true

to the map. Charles dynamically generates a cert pretending to be the
target host when acting as an ssl proxy, and clj-http probably has to be
told to accept it.

Okay, I've done so, but I don't think I understand what you are
telling me. Are you saying that clj-http won't send its POST if it
feels the cert is false?

Charles has consistently said, in each report, SSL Proxying not
enabled for this host: enable in Proxy Settings, SSL locations

And I've made the change you suggested, but I still see that message.

On Feb 23, 5:24 pm, Jonah Benton jo...@jonah.com wrote:

Try adding

:insecure? true

to the map. Charles dynamically generates a cert pretending to be the
target host when acting as an ssl proxy, and clj-http probably has to be
told to accept it.

On Sat, Feb 23, 2013 at 4:18 PM, larry google groups

lawrencecloj...@gmail.com wrote:

This might be a dumb How does the Internet work kind of question.

I have been asked to pull data from Omniture, using the Omniture API.
I thought this would take me an hour, but I've been working on this
for 3 days now. I keep getting authentication errors.

I became curious about exactly what code was sending to Omniture, so I
downloaded Charles, the network debugging tool:

http://www.charlesproxy.com/

I am using clj-http to make the POST. The post is suppose to be
https.

This is the code where I use clj-http (here I call http-client):

The url is:

https://api2.omniture.com/admin/1.3/rest/?method=Report.QueueRanked

Again, if I change the URL so it uses http then in Charles I can see
all the headers that suppose to be in this line of code:

X-WSSE headers

But If I change the URL to use https, then I see no headers in
Charles. Why is that?

lawrence

--
--
You received this message because you are subscribed to the

Re: How does clj-http work regarding https?

Ok- so in Charles, you'll need to do that, tell it to ssl proxy the domain

api2.omniture.com

Described in a little more detail here:

http://www.charlesproxy.com/documentation/proxying/ssl-proxying/





On Sat, Feb 23, 2013 at 5:47 PM, larry google groups 
lawrencecloj...@gmail.com wrote:

  Try adding
 
  :insecure? true
 
  to the map. Charles dynamically generates a cert pretending to be the
  target host when acting as an ssl proxy, and clj-http probably has to be
  told to accept it.

 Okay, I've done so, but I don't think I understand what you are
 telling me. Are you saying that clj-http won't send its POST if it
 feels the cert is false?

 Charles has consistently said, in each report, SSL Proxying not
 enabled for this host: enable in Proxy Settings, SSL locations

 And I've made the change you suggested, but I still see that message.



 On Feb 23, 5:24 pm, Jonah Benton jo...@jonah.com wrote:
  Try adding
 
  :insecure? true
 
  to the map. Charles dynamically generates a cert pretending to be the
  target host when acting as an ssl proxy, and clj-http probably has to be
  told to accept it.
 
  On Sat, Feb 23, 2013 at 4:18 PM, larry google groups 
 
 
 
 
 
 
 
  lawrencecloj...@gmail.com wrote:
 
   This might be a dumb How does the Internet work kind of question.
 
   I have been asked to pull data from Omniture, using the Omniture API.
   I thought this would take me an hour, but I've been working on this
   for 3 days now. I keep getting authentication errors.
 
   I became curious about exactly what code was sending to Omniture, so I
   downloaded Charles, the network debugging tool:
 
  http://www.charlesproxy.com/
 
   I am using clj-http to make the POST. The post is suppose to be
   https.
 
   This is the thing that surprises me: If I use http then I can see all
   the headers in Charles, and they all look correct. But if I use https
   (which is what I need to use) then there are no headers that I can see
   in Charles.
 
   Is that because Charles does not want to show me a bunch of encrypted
   garbage? Or is clj-http not adding in the headers with https? Maybe I
   need a special setting to get clj-http to correctly send to https? (I
   have not been able to find any such setting.)
 
   This is the code where I use clj-http (here I call http-client):
 
   (defn omniture-call-api [url-with-queue-method api-payload headers]
 (timbre/spy :debug  return value of omniture-call-api 
 (try+
   (http-client/post url-with-queue-method
 {:body api-payload
  :headers {X-Api-Version 2
X-WSSE headers}
  :content-type :json
  :socket-timeout 4000
  :conn-timeout 4000
  :accept :json
  :client-params
   {http.protocol.allow-circular-redirects false
  http.useragent
   clj-http}})
   (catch Object o (println (pp/pprint o))
 
   The url is:
 
  https://api2.omniture.com/admin/1.3/rest/?method=Report.QueueRanked
 
   At first I assumed this was a problem with Omniture's code. I have
   asked several question on the Developer forum at Omniture, but no one
   there could help me (Adobe has apparently cut most of the developer
   support since Adobe bought Omniture in 2009). However, I am now
   wondering if maybe I am doing this POST incorrectly.
 
   I am puzzled by something else as well: I call this function once, yet
   Charles shows 4 calls being made to Omniture, and my own code, when it
   prints data to the terminal, seems to show many requests being made.
   Why would that be?
 
   Again, if I change the URL so it uses http then in Charles I can see
   all the headers that suppose to be in this line of code:
 
   X-WSSE headers
 
   and the headers look correct (I posted them to the developer forums at
   Omniture and the one guy from Omniture who gave it a look felt there
   was nothing terribly amiss -- but he couldn't rule anything out.)
 
   But If I change the URL to use https, then I see no headers in
   Charles. Why is that?
 
    lawrence
 
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   --
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   Groups Clojure group.
   To post to this group, send email to clojure@googlegroups.com
   Note that posts from new members are moderated - please be patient with
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 an
   email to

Re: How does clj-http work regarding https?

Very likely it's the automatic retry logic:

;; Apache's http client automatically retries on IOExceptions, if
you;; would like to handle these retries yourself, you can specify a;;
:retry-handler. Return true to retry, false to stop
trying:(client/post http://example.org; {:multipart [[title Foo]
   [Content/type text/plain]
   [file
(clojure.java.io/file /tmp/missing-file)]]
   :retry-handler (fn [ex try-count
http-context]
(println Got: ex)
(if ( try-count
4) false true))})

from

https://github.com/dakrone/clj-http




On Sat, Feb 23, 2013 at 5:57 PM, larry google groups 
lawrencecloj...@gmail.com wrote:


 Any idea why a single call to clj-http/post causes 4 transactions to
 appear in Charles?



 On Feb 23, 5:47 pm, larry google groups lawrencecloj...@gmail.com
 wrote:
   Try adding
 
   :insecure? true
 
   to the map. Charles dynamically generates a cert pretending to be the
   target host when acting as an ssl proxy, and clj-http probably has to
 be
   told to accept it.
 
  Okay, I've done so, but I don't think I understand what you are
  telling me. Are you saying that clj-http won't send its POST if it
  feels the cert is false?
 
  Charles has consistently said, in each report, SSL Proxying not
  enabled for this host: enable in Proxy Settings, SSL locations
 
  And I've made the change you suggested, but I still see that message.
 
  On Feb 23, 5:24 pm, Jonah Benton jo...@jonah.com wrote:
 
 
 
 
 
 
 
   Try adding
 
   :insecure? true
 
   to the map. Charles dynamically generates a cert pretending to be the
   target host when acting as an ssl proxy, and clj-http probably has to
 be
   told to accept it.
 
   On Sat, Feb 23, 2013 at 4:18 PM, larry google groups 
 
   lawrencecloj...@gmail.com wrote:
 
This might be a dumb How does the Internet work kind of question.
 
I have been asked to pull data from Omniture, using the Omniture API.
I thought this would take me an hour, but I've been working on this
for 3 days now. I keep getting authentication errors.
 
I became curious about exactly what code was sending to Omniture, so
 I
downloaded Charles, the network debugging tool:
 
   http://www.charlesproxy.com/
 
I am using clj-http to make the POST. The post is suppose to be
https.
 
This is the thing that surprises me: If I use http then I can see all
the headers in Charles, and they all look correct. But if I use https
(which is what I need to use) then there are no headers that I can
 see
in Charles.
 
Is that because Charles does not want to show me a bunch of encrypted
garbage? Or is clj-http not adding in the headers with https? Maybe I
need a special setting to get clj-http to correctly send to https? (I
have not been able to find any such setting.)
 
This is the code where I use clj-http (here I call http-client):
 
(defn omniture-call-api [url-with-queue-method api-payload headers]
  (timbre/spy :debug  return value of omniture-call-api 
  (try+
(http-client/post url-with-queue-method
  {:body api-payload
   :headers {X-Api-Version 2
 X-WSSE headers}
   :content-type :json
   :socket-timeout 4000
   :conn-timeout 4000
   :accept :json
   :client-params
{http.protocol.allow-circular-redirects false
   http.useragent
clj-http}})
(catch Object o (println (pp/pprint o))
 
The url is:
 
   https://api2.omniture.com/admin/1.3/rest/?method=Report.QueueRanked
 
At first I assumed this was a problem with Omniture's code. I have
asked several question on the Developer forum at Omniture, but no one
there could help me (Adobe has apparently cut most of the developer
support since Adobe bought Omniture in 2009). However, I am now
wondering if maybe I am doing this POST incorrectly.
 
I am puzzled by something else as well: I call this function once,
 yet
Charles shows 4 calls being made to Omniture, and my own code, when
 it
prints data to the terminal, seems to show many requests being made.
Why would that be?
 
Again, if I change the URL so it uses http then in Charles I can
 see
all the headers that suppose to be in this line of code:
 
X-WSSE headers
 
and the headers look correct (I posted them to the developer forums
 at
Omniture and the one guy from Omniture who gave it a look felt there
was nothing terribly amiss --

Re: How does clj-http work regarding https?

Very likely it's the automatic retry logic:

Thank you for that. One mystery solved. I wonder why it retries? The
ping reaches Omniture, I get back a 401 error. Maybe it retries on any
4xx error?

On Feb 23, 6:30 pm, Jonah Benton jo...@jonah.com wrote:
Very likely it's the automatic retry logic:

;; Apache's http client automatically retries on IOExceptions, if
you;; would like to handle these retries yourself, you can specify a;;
:retry-handler. Return true to retry, false to stop
trying:(client/post http://example.org; {:multipart [[title Foo]
[Content/type text/plain]
[file
(clojure.java.io/file /tmp/missing-file)]]
:retry-handler (fn [ex try-count
http-context]
(println Got: ex)
(if ( try-count
4) false true))})

from

https://github.com/dakrone/clj-http

On Sat, Feb 23, 2013 at 5:57 PM, larry google groups

lawrencecloj...@gmail.com wrote:

Any idea why a single call to clj-http/post causes 4 transactions to
appear in Charles?

On Feb 23, 5:47 pm, larry google groups lawrencecloj...@gmail.com
wrote:
Try adding

:insecure? true

to the map. Charles dynamically generates a cert pretending to be the
target host when acting as an ssl proxy, and clj-http probably has to
be
told to accept it.

Okay, I've done so, but I don't think I understand what you are
telling me. Are you saying that clj-http won't send its POST if it
feels the cert is false?

Charles has consistently said, in each report, SSL Proxying not
enabled for this host: enable in Proxy Settings, SSL locations

And I've made the change you suggested, but I still see that message.

On Feb 23, 5:24 pm, Jonah Benton jo...@jonah.com wrote:

Try adding

:insecure? true

to the map. Charles dynamically generates a cert pretending to be the
target host when acting as an ssl proxy, and clj-http probably has to
be
told to accept it.

On Sat, Feb 23, 2013 at 4:18 PM, larry google groups

lawrencecloj...@gmail.com wrote:

This might be a dumb How does the Internet work kind of question.

I have been asked to pull data from Omniture, using the Omniture API.
I thought this would take me an hour, but I've been working on this
for 3 days now. I keep getting authentication errors.

I became curious about exactly what code was sending to Omniture, so
I
downloaded Charles, the network debugging tool:

http://www.charlesproxy.com/

I am using clj-http to make the POST. The post is suppose to be
https.

This is the code where I use clj-http (here I call http-client):

The url is:

https://api2.omniture.com/admin/1.3/rest/?method=Report.QueueRanked

I am puzzled by something else as well: I call this function once,
yet
Charles shows 4 calls being made to Omniture, and my own code, when
it
prints data to the terminal, seems to show many requests being made.
Why would that be?

Again, if I change the

Re: How does clj-http work regarding https?

Described in a little more detail here:

http://www.charlesproxy.com/documentation/proxying/ssl-proxying/

Thank you, that is a huge help.

I am finding it is a real headache to use several new technologies,
all at once.

On Feb 23, 6:28 pm, Jonah Benton jo...@jonah.com wrote:
Ok- so in Charles, you'll need to do that, tell it to ssl proxy the domain

api2.omniture.com

Described in a little more detail here:

http://www.charlesproxy.com/documentation/proxying/ssl-proxying/

On Sat, Feb 23, 2013 at 5:47 PM, larry google groups

lawrencecloj...@gmail.com wrote:
Try adding

:insecure? true

to the map. Charles dynamically generates a cert pretending to be the
target host when acting as an ssl proxy, and clj-http probably has to be
told to accept it.

Okay, I've done so, but I don't think I understand what you are
telling me. Are you saying that clj-http won't send its POST if it
feels the cert is false?

Charles has consistently said, in each report, SSL Proxying not
enabled for this host: enable in Proxy Settings, SSL locations

And I've made the change you suggested, but I still see that message.

On Feb 23, 5:24 pm, Jonah Benton jo...@jonah.com wrote:
Try adding

:insecure? true

to the map. Charles dynamically generates a cert pretending to be the
target host when acting as an ssl proxy, and clj-http probably has to be
told to accept it.

On Sat, Feb 23, 2013 at 4:18 PM, larry google groups

lawrencecloj...@gmail.com wrote:

This might be a dumb How does the Internet work kind of question.

I have been asked to pull data from Omniture, using the Omniture API.
I thought this would take me an hour, but I've been working on this
for 3 days now. I keep getting authentication errors.

I became curious about exactly what code was sending to Omniture, so I
downloaded Charles, the network debugging tool:

http://www.charlesproxy.com/

I am using clj-http to make the POST. The post is suppose to be
https.

This is the code where I use clj-http (here I call http-client):

The url is:

https://api2.omniture.com/admin/1.3/rest/?method=Report.QueueRanked

Again, if I change the URL so it uses http then in Charles I can see
all the headers that suppose to be in this line of code:

X-WSSE headers

But If I change the URL to use https, then I see no headers in
Charles. Why is that?

lawrence

Re: How does clj-http work regarding https?

;; Apache's http client automatically retries on IOExceptions,

I guess clj-http swallows the exception? It seems strange that it
doesn't bubble up to my code. But then I don't know Java so I probably
miss some of the etiquette about when a library should catch its own
exceptions.

On Feb 23, 6:52 pm, larry google groups lawrencecloj...@gmail.com
wrote:
Described in a little more detail here:

http://www.charlesproxy.com/documentation/proxying/ssl-proxying/

Thank you, that is a huge help.

I am finding it is a real headache to use several new technologies,
all at once.

On Feb 23, 6:28 pm, Jonah Benton jo...@jonah.com wrote:

Ok- so in Charles, you'll need to do that, tell it to ssl proxy the domain

api2.omniture.com

Described in a little more detail here:

http://www.charlesproxy.com/documentation/proxying/ssl-proxying/

On Sat, Feb 23, 2013 at 5:47 PM, larry google groups

lawrencecloj...@gmail.com wrote:
Try adding

:insecure? true

to the map. Charles dynamically generates a cert pretending to be the
target host when acting as an ssl proxy, and clj-http probably has to be
told to accept it.

Okay, I've done so, but I don't think I understand what you are
telling me. Are you saying that clj-http won't send its POST if it
feels the cert is false?

Charles has consistently said, in each report, SSL Proxying not
enabled for this host: enable in Proxy Settings, SSL locations

And I've made the change you suggested, but I still see that message.

On Feb 23, 5:24 pm, Jonah Benton jo...@jonah.com wrote:
Try adding

:insecure? true

to the map. Charles dynamically generates a cert pretending to be the
target host when acting as an ssl proxy, and clj-http probably has to be
told to accept it.

On Sat, Feb 23, 2013 at 4:18 PM, larry google groups

lawrencecloj...@gmail.com wrote:

This might be a dumb How does the Internet work kind of question.

I have been asked to pull data from Omniture, using the Omniture API.
I thought this would take me an hour, but I've been working on this
for 3 days now. I keep getting authentication errors.

I became curious about exactly what code was sending to Omniture, so I
downloaded Charles, the network debugging tool:

http://www.charlesproxy.com/

I am using clj-http to make the POST. The post is suppose to be
https.

This is the code where I use clj-http (here I call http-client):

The url is:

https://api2.omniture.com/admin/1.3/rest/?method=Report.QueueRanked

Again, if I change the URL so it uses http then in Charles I can see
all the headers that suppose to be in this line of code:

X-WSSE headers

Re: Clojure Performance For Expensive Algorithms

2013-02-23 Thread Leif

This may be slightly off topic, but your longest contiguous common 
subsequence problem sounds like the longest common substring problem. 
 Your code uses the dynamic programming solution, which is O(M*N), but 
there are O(M+N) algorithms that might be faster depending on the length 
and alphabet of your input sequences.

On Monday, February 18, 2013 11:16:51 PM UTC-5, Geo wrote:

 Hello,

 I am cross-posting my Clojure question from StackOverflow.  I am trying to 
 get an algorithm in Clojure to match Java speed and managed to get the 
 performance to within one order of magnitude and wondering if more is 
 possible. The full question is here:


 http://stackoverflow.com/questions/14949705/clojure-performance-for-expensive-algorithms

 Thank you.


-- 
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Groups Clojure group.
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first post.
To unsubscribe from this group, send email to
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Re: How does clj-http work regarding https?

It won't retry on http-level errors; those semantics are up to the
application. It should only retry connection-layer problems. So there must
have been something funny happening either between the client and Charles,
or between Charles and Omniture.



On Sat, Feb 23, 2013 at 6:50 PM, larry google groups 
lawrencecloj...@gmail.com wrote:

  Very likely it's the automatic retry logic:


 Thank you for that. One mystery solved. I wonder why it retries? The
 ping reaches Omniture, I get back a 401 error. Maybe it retries on any
 4xx error?




 On Feb 23, 6:30 pm, Jonah Benton jo...@jonah.com wrote:
  Very likely it's the automatic retry logic:
 
  ;; Apache's http client automatically retries on IOExceptions, if
  you;; would like to handle these retries yourself, you can specify a;;
  :retry-handler. Return true to retry, false to stop
  trying:(client/post http://example.org; {:multipart [[title Foo]
 [Content/type
 text/plain]
 [file
  (clojure.java.io/file /tmp/missing-file)]]
 :retry-handler (fn [ex try-count
  http-context]
  (println Got: ex)
  (if ( try-count
  4) false true))})
 
  from
 
  https://github.com/dakrone/clj-http
 
  On Sat, Feb 23, 2013 at 5:57 PM, larry google groups 
 
 
 
 
 
 
 
  lawrencecloj...@gmail.com wrote:
 
   Any idea why a single call to clj-http/post causes 4 transactions to
   appear in Charles?
 
   On Feb 23, 5:47 pm, larry google groups lawrencecloj...@gmail.com
   wrote:
 Try adding
 
 :insecure? true
 
 to the map. Charles dynamically generates a cert pretending to be
 the
 target host when acting as an ssl proxy, and clj-http probably has
 to
   be
 told to accept it.
 
Okay, I've done so, but I don't think I understand what you are
telling me. Are you saying that clj-http won't send its POST if it
feels the cert is false?
 
Charles has consistently said, in each report, SSL Proxying not
enabled for this host: enable in Proxy Settings, SSL locations
 
And I've made the change you suggested, but I still see that message.
 
On Feb 23, 5:24 pm, Jonah Benton jo...@jonah.com wrote:
 
 Try adding
 
 :insecure? true
 
 to the map. Charles dynamically generates a cert pretending to be
 the
 target host when acting as an ssl proxy, and clj-http probably has
 to
   be
 told to accept it.
 
 On Sat, Feb 23, 2013 at 4:18 PM, larry google groups 
 
 lawrencecloj...@gmail.com wrote:
 
  This might be a dumb How does the Internet work kind of
 question.
 
  I have been asked to pull data from Omniture, using the Omniture
 API.
  I thought this would take me an hour, but I've been working on
 this
  for 3 days now. I keep getting authentication errors.
 
  I became curious about exactly what code was sending to
 Omniture, so
   I
  downloaded Charles, the network debugging tool:
 
 http://www.charlesproxy.com/
 
  I am using clj-http to make the POST. The post is suppose to be
  https.
 
  This is the thing that surprises me: If I use http then I can
 see all
  the headers in Charles, and they all look correct. But if I use
 https
  (which is what I need to use) then there are no headers that I
 can
   see
  in Charles.
 
  Is that because Charles does not want to show me a bunch of
 encrypted
  garbage? Or is clj-http not adding in the headers with https?
 Maybe I
  need a special setting to get clj-http to correctly send to
 https? (I
  have not been able to find any such setting.)
 
  This is the code where I use clj-http (here I call http-client):
 
  (defn omniture-call-api [url-with-queue-method api-payload
 headers]
(timbre/spy :debug  return value of omniture-call-api 
(try+
  (http-client/post url-with-queue-method
{:body api-payload
 :headers {X-Api-Version 2
   X-WSSE headers}
 :content-type :json
 :socket-timeout 4000
 :conn-timeout 4000
 :accept :json
 :client-params
  {http.protocol.allow-circular-redirects false
 
  http.useragent
  clj-http}})
  (catch Object o (println (pp/pprint o))
 
  The url is:
 
 
 https://api2.omniture.com/admin/1.3/rest/?method=Report.QueueRanked
 
  At first I assumed this was a problem with Omniture's code. I
 have
  asked several question on the Developer forum at Omniture, but
 no one
  there could help me (Adobe has apparently

Re: How does clj-http work regarding https?