Beefy Boxes and Bandwidth Generously Provided by pair Networks
Clear questions and runnable code
get the best and fastest answer
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

This service requires you to have an account with Ally. Their investment API is new. I don't work for them or have any professional relationship but they are often mentioned as the best online bank in the US, I've been a customer since they were GMAC (20 years), and they really came through for me once so I have no reservations in recommending them and sharing some code to use their services.

I had trouble getting streaming to work which was embarassing because it's supposed to be the part of Perl I'm good at. :P pmqs, haukex bliako, kschwab, and vr all stepped up to help and solved my trouble. My new trouble is a websocket client—a cat to skin later—which led me back to Mojolicious. I knew it had some server support so I figured the example code might show client code. I was pleasantly shocked to see it supports it completely via its own client Mojo::UserAgent. All hail sri!

I was even happier to see the client supports gzip content, even in streams. Might be more confusing code for some but for me it was much easier to follow. I have hesitated to move some of my personal code/practices to Mojo but this is probably the shove I needed.

Since the problem is now solved with both libraries, I figured I should share some of the code here. Both rely on the terrific WWW::OAuth. There is a fair bit of identical boilerplate for the arguments and environment.

WWW::Mechanize (LWP::UserAgent)

#!/usr/bin/env perl use 5.10.0; use strictures; use WWW::Mechanize; # LWP::UserAgent is almost the same here. use WWW::OAuth; use Compress::Zlib; my @symbols = grep /\A[A-Z.]+\z/, @ARGV; die "Give a list of symbols; e.g., AAPL GHII AMZN XOM DIS PBF BABA JD +AMD VOO\n" unless @symbols; my $sym = join ",", @symbols; die "Missing ENV values: ALLY_CLIENT_ID ALLY_CLIENT_SECRET ALLY_TOKEN +ALLY_TOKEN_SECRET\n" unless $ENV{ALLY_CLIENT_ID} and $ENV{ALLY_CLIENT_SECRET} and $ENV{ALLY_TOKEN} and $ENV{ALLY_TOKEN_SECRET}; my $oauth = WWW::OAuth->new( client_id => $ENV{ALLY_CLIENT_ID}, client_secret => $ENV{ALLY_CLIENT_SECRET}, token => $ENV{ALLY_TOKEN}, token_secret => $ENV{ALLY_TOKEN_SECRET} ); my $mech = WWW::Mechanize->new( autocheck => undef ); $mech->add_handler( request_prepare => sub { $oauth->authenticate($_[0 +]) } ); my $gunzip = inflateInit( WindowBits => 16 + MAX_WBITS ) or die "Cannot create a inflation stream\n"; $mech->add_handler ( response_data => sub { my ( $response, $ua, $h, $data ) = @_; $response->content(undef); # Else will append. my ( $buffer, $status ) = $gunzip->inflate($data); die "zlib error: $status" if length $status; say $buffer; }); $mech->get("https://stream.tradeking.com/v1/market/quotes?symbols=$sym +"); __END__

Mojo::UserAgent

#!/usr/bin/env perl use 5.10.0; use strictures; use Mojo::UserAgent; use WWW::OAuth; my @symbols = grep /\A[A-Z.]+\z/, @ARGV; die "Give a list of symbols; e.g., AAPL GHII AMZN XOM DIS PBF BABA JD +AMD VOO\n" unless @symbols; my $sym = join ",", @symbols; die "Missing ENV values: ALLY_CLIENT_ID ALLY_CLIENT_SECRET ALLY_TOKEN +ALLY_TOKEN_SECRET\n" unless $ENV{ALLY_CLIENT_ID} and $ENV{ALLY_CLIENT_SECRET} and $ENV{ALLY_TOKEN} and $ENV{ALLY_TOKEN_SECRET}; my $oauth = WWW::OAuth->new( client_id => $ENV{ALLY_CLIENT_ID}, client_secret => $ENV{ALLY_CLIENT_SECRET}, token => $ENV{ALLY_TOKEN}, token_secret => $ENV{ALLY_TOKEN_SECRET} ); my $ua = Mojo::UserAgent->new( max_response_size => 0 ); # Stream mean +s no max. $ua->on( start => sub { $oauth->authenticate( $_[1]->req ) } ); # OAut +h all requests. my $tx = $ua->build_tx( GET => "https://stream.tradeking.com/v1/market +/quotes?symbols=$sym" ); $tx->res->content ->unsubscribe("read") ->on( read => sub { my ( $content, $bytes ) = @_; say $bytes; }); $tx = $ua->start($tx); __END__

In reply to Streaming Market Quotes from Ally Invest by Your Mother

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others contemplating the Monastery: (8)
    As of 2019-02-19 23:19 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?
      I use postfix dereferencing ...









      Results (105 votes). Check out past polls.

      Notices?
      • (Sep 10, 2018 at 22:53 UTC) Welcome new users!