How do I get an erlang shell where I can experiment with couchbeam?

[tleyden]

I'm an erlang and couchbeam noob .. and just want to be in an erlang shell where I can experiment with couchbeam as I'm writing my own module.

Here's what I've tried:

• run "make"
• cd into the ebin directory

and then:

$ erl
Erlang R15B01 (erts-5.9.1) [source] [64-bit] [smp:8:8] [async-threads:0] [hipe] [kernel-poll:false]

Eshell V5.9.1  (abort with ^G)
1> application:start(sasl),
1> application:start(ibrowse),
1> application:start(couchbeam).

=PROGRESS REPORT==== 4-Sep-2012::09:18:26 ===
      supervisor: {local,sasl_safe_sup}
     started: [{pid,<0.38.0>},
           {name,alarm_handler},
           {mfargs,{alarm_handler,start_link,[]}},
           {restart_type,permanent},
           {shutdown,2000},
           {child_type,worker}]

=PROGRESS REPORT==== 4-Sep-2012::09:18:26 ===
      supervisor: {local,sasl_safe_sup}
     started: [{pid,<0.39.0>},
           {name,overload},
           {mfargs,{overload,start_link,[]}},
           {restart_type,permanent},
           {shutdown,2000},
           {child_type,worker}]

=PROGRESS REPORT==== 4-Sep-2012::09:18:26 ===
      supervisor: {local,sasl_sup}
     started: [{pid,<0.37.0>},
           {name,sasl_safe_sup},
           {mfargs,
               {supervisor,start_link,
               [{local,sasl_safe_sup},sasl,safe]}},
           {restart_type,permanent},
           {shutdown,infinity},
           {child_type,supervisor}]

=PROGRESS REPORT==== 4-Sep-2012::09:18:26 ===
      supervisor: {local,sasl_sup}
     started: [{pid,<0.40.0>},
           {name,release_handler},
           {mfargs,{release_handler,start_link,[]}},
           {restart_type,permanent},
           {shutdown,2000},
           {child_type,worker}]

=PROGRESS REPORT==== 4-Sep-2012::09:18:26 ===
     application: sasl
      started_at: nonode@nohost
{error,{not_started,crypto}}
2> Host = "localhost",
2> Port = 5984,
2> Prefix = "",
2> Options = [],
2> S = couchbeam:server_connection(Host, Port, Prefix, Options).
{server,"localhost",5984,[],[]}
3> {ok, _Version} = couchbeam:server_info(S).
** exception error: undefined function ibrowse:send_req/6
 in function  couchbeam_httpc:request/6 (src/couchbeam_httpc.erl, line 25)
 in call from couchbeam:server_info/1 (src/couchbeam.erl, line 139)

Also, not sure if it is related, but I'm not able to run "make test" either:

$ make test
==> Entering directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/mochiweb'
==> mochiweb (get-deps)
==> Leaving directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/mochiweb'
==> Entering directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/jiffy'
==> Entering directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/proper'
==> proper (get-deps)
==> Leaving directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/proper'
==> jiffy (get-deps)
==> Leaving directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/jiffy'
==> Entering directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/oauth'
==> oauth (get-deps)
==> Leaving directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/oauth'
==> Entering directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/ibrowse'
==> ibrowse (get-deps)
==> Leaving directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/ibrowse'
==> couchbeam (get-deps)
==> Entering directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/mochiweb'
==> mochiweb (compile)
==> Leaving directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/mochiweb'
==> Entering directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/jiffy'
==> Entering directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/proper'
==> proper (compile)
make[1]: `include/compile_flags.hrl' is up to date.
==> Leaving directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/proper'
==> jiffy (compile)
==> Leaving directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/jiffy'
==> Entering directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/oauth'
==> oauth (compile)
==> Leaving directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/oauth'
==> Entering directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/ibrowse'
==> ibrowse (compile)
==> Leaving directory `/Users/tleyden/Documents/work/tools/couchbeam/deps/ibrowse'
==> couchbeam (compile)
prove t/*.t
t/001-load.t ........ ok   
t/002-server.t ...... Failed 1/1 subtests 
t/003-database.t .... Failed 10/10 subtests 
t/004-document.t .... Failed 28/28 subtests 
t/005-view.t ........ Failed 5/5 subtests 
t/006-attachment.t .. Failed 13/13 subtests 

Test Summary Report
-------------------
t/002-server.t    (Wstat: 0 Tests: 0 Failed: 0)
  Parse errors: Bad plan.  You planned 1 tests but ran 0.
t/003-database.t  (Wstat: 0 Tests: 3 Failed: 3)
  Failed tests:  1-3
  Parse errors: Bad plan.  You planned 10 tests but ran 3.
t/004-document.t  (Wstat: 0 Tests: 0 Failed: 0)
  Parse errors: Bad plan.  You planned 28 tests but ran 0.
t/005-view.t      (Wstat: 0 Tests: 0 Failed: 0)
  Parse errors: Bad plan.  You planned 5 tests but ran 0.
t/006-attachment.t (Wstat: 0 Tests: 0 Failed: 0)
  Parse errors: Bad plan.  You planned 13 tests but ran 0.
Files=6, Tests=5,  1 wallclock secs ( 0.06 usr  0.02 sys +  1.24 cusr  0.23 csys =  1.55 CPU)
Result: FAIL
make: *** [test] Error 1

[tleyden]

I managed to get couchbeam to load in the shell via the following:

$ cd ebin
$ erl
> code:add_patha("/Users/tleyden/Documents/work/tools/couchbeam/deps/ibrowse/ebin").
> code:add_patha("/Users/tleyden/Documents/work/tools/couchbeam/deps/jiffy/ebin").
> code:add_patha("/Users/tleyden/Documents/work/tools/couchbeam/deps/mochiweb/ebin").
> code:add_patha("/Users/tleyden/Documents/work/tools/couchbeam/deps/oauth/ebin").
> code:add_patha("/Users/tleyden/Documents/work/tools/couchbeam/deps/proper/ebin").
> application:start(crypto).
> application:start(public_key).
> application:start(sasl).
> application:start(ibrowse).
> application:start(ssl).
> application:start(couchbeam).
> Host = "localhost",
> Port = 5984,
> Prefix = "",
> Options = [],
> S = couchbeam:server_connection(Host, Port, Prefix, Options).
> {ok, _Version} = couchbeam:server_info(S).

Which prints:

{ok,{[{<<"couchdb">>,<<"Welcome">>}, 
  {<<"version">>,<<"1.2.0">>}]}}

Is there an easier way to get this to work or some crucial step I'm missing?

[kuloshius]

The easiest way is to get rebar (https://github.com/basho/rebar) which is a neat tool for building erlang applications. Then $ cd couchbeam $ rebar get-deps (this will fetch the required dependencies for you) $ rebar compile (this will build the application) $ cd ebin $ erl 1> couchbeam:start(). (this will start couchbeam application making sure all the required dependencies are loaded.

No idea why tests fail though.

Cheers

[tleyden]

Great, that worked! The tests now pass too.