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From: Pavel Tupitsyn <ptupitsyn@apache.org>
Date: Fri, 23 Sep 2016 11:28:10 +0300
Message-ID: <CAK2_iMMJ4y7y9kCaenS+RGdFpaSvUa0Tqs5ydb8Nqvn-Ts_-cA@mail.gmail.com>
Subject: Re: Ignite inside OData WebAPI
To: user@ignite.apache.org
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archived-at: Fri, 23 Sep 2016 08:28:44 -0000

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Hi,

1) The code looks good to me. What exactly is the issue? Is there an
exception, or do you get incorrect results?
2) There is a known issue with IIS: it performs a shadow-copy [1] of
application assemblies (dll files), which makes it impossible for Ignite to
detect Libs directory with jar files.
If your libs directory is in bin folder (as it is when NuGet is used), the
solution is the following [2]:

IgniteConfiguration.JvmClasspath =
Directory.GetFiles(Server.MapPath(@"~\bin\libs")).Aggregate((x, y) => x +
";" + y);

Let me know if this helps.


[1] https://msdn.microsoft.com/en-us/library/ms404279(v=vs.110).aspx
[2]
https://apacheignite-net.readme.io/docs/aspnet-output-caching#configuration-starting-ignite-manually

On Fri, Sep 23, 2016 at 6:02 AM, Murthy Kakarlamudi <ksatya@gmail.com>
wrote:

> Hi,
>    I am trying to expose Cache contents as an Odata API. I created the
> Odata API using ASP.NET WebAPI. Inside the API implementation, I am
> initializing Ignite in cache mode. Below is the method I am using to
> retrieve a listing. I have 2 questions.
>
> 1. I was not able to use Select option in AsCacheQueryable. How to get a
> list of all the entries in the cache from LINQ?
> 2. Embedded IIS server quits the process after it hits var ignite =
> Ignition.Start(cfg); statement. Processing stops beyond this statement. I
> confirmed this in debug mode. It does not throw any errors in the console.
> Not sure if it is possible to start Ignite in client mode in Web API that
> is deployed on IIS.
>
> Any help will be much appreciated. Thanks.
>
> public List<Movie> GetMovies()
>         {
>             var cfg = new IgniteConfiguration
>             {
>                 BinaryConfiguration = new Apache.Ignite.Core.Binary.
> BinaryConfiguration(typeof(Movie), typeof(StarRating), typeof(Person)),
>                 JvmOptions = new List<string> { "-Xms512m", "-Xmx1024m" }
>             };
>             Ignition.ClientMode = true;
>             var ignite = Ignition.Start(cfg);
>             var cache = ignite.GetOrCreateCache<int, Movie>(new
> CacheConfiguration
>             {
>                 Name = "myMusicCache",
>                 QueryEntities = new[]
>             {
>                         new QueryEntity(typeof(int), typeof(Movie))
>
>                     }
>             });
>             List<Movie> movies = new List<Movie>();
>             IQueryable<ICacheEntry<int, Movie>> qry =
>                 cache.AsCacheQueryable().Where(m => m.Key == 1);
>
>             foreach (ICacheEntry<int, Movie> entry in qry)
>             {
>                 Console.WriteLine("Movie: " + entry.Value);
>                 movies.Add(entry.Value);
>             }
>
>
>             return movies;
>         }
>

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<div dir=3D"ltr">Hi,<div><br></div><div>1) The code looks good to me. What =
exactly is the issue? Is there an exception, or do you get incorrect result=
s?</div><div>2) There is a known issue with IIS: it performs a shadow-copy =
[1] of application assemblies (dll files), which makes it impossible for Ig=
nite to detect Libs directory with jar files.</div><div>If your libs direct=
ory is in bin folder (as it is when NuGet is used), the solution is the fol=
lowing [2]:</div><div><br></div><div>IgniteConfiguration.JvmClasspath =3D D=
irectory.GetFiles(Server.MapPath(@&quot;~\bin\libs&quot;)).Aggregate((x, y)=
 =3D&gt; x + &quot;;&quot; + y);</div><div><br></div><div>Let me know if th=
is helps.</div><div><br></div><div><br></div><div>[1]=C2=A0<a href=3D"https=
://msdn.microsoft.com/en-us/library/ms404279(v=3Dvs.110).aspx">https://msdn=
.microsoft.com/en-us/library/ms404279(v=3Dvs.110).aspx</a></div><div>[2] <a=
 href=3D"https://apacheignite-net.readme.io/docs/aspnet-output-caching#conf=
iguration-starting-ignite-manually">https://apacheignite-net.readme.io/docs=
/aspnet-output-caching#configuration-starting-ignite-manually</a></div></di=
v><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Fri, Sep 23,=
 2016 at 6:02 AM, Murthy Kakarlamudi <span dir=3D"ltr">&lt;<a href=3D"mailt=
o:ksatya@gmail.com" target=3D"_blank">ksatya@gmail.com</a>&gt;</span> wrote=
:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-le=
ft:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">Hi,<div>=C2=A0 =C2=A0I=
 am trying to expose Cache contents as an Odata API. I created the Odata AP=
I using <a href=3D"http://ASP.NET" target=3D"_blank">ASP.NET</a> WebAPI. In=
side the API implementation, I am initializing Ignite in cache mode. Below =
is the method I am using to retrieve a listing. I have 2 questions.</div><d=
iv><br></div><div>1. I was not able to use Select option in AsCacheQueryabl=
e. How to get a list of all the entries in the cache from LINQ?</div><div>2=
. Embedded IIS server quits the process after it hits var ignite =3D Igniti=
on.Start(cfg); statement. Processing stops beyond this statement. I confirm=
ed this in debug mode. It does not throw any errors in the console. Not sur=
e if it is possible to start Ignite in client mode in Web API that is deplo=
yed on IIS.</div><div><br></div><div>Any help will be much appreciated. Tha=
nks.</div><div><br></div><div><div>public List&lt;Movie&gt; GetMovies()</di=
v><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 {</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 var cfg =3D new IgniteConfiguration</div><div>=C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 {</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 BinaryConfiguration =3D new Apache.Ignite.Core.Binary.=
<wbr>BinaryConfiguration(typeof(<wbr>Movie), typeof(StarRating), typeof(Per=
son)),</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Jv=
mOptions =3D new List&lt;string&gt; { &quot;-Xms512m&quot;, &quot;-Xmx1024m=
&quot; }</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 };</div><div>=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Ignition.ClientMode =3D true;</di=
v><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 var ignite =3D Ignition.St=
art(cfg);</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 var cache =3D=
 ignite.GetOrCreateCache&lt;int, Movie&gt;(new CacheConfiguration</div><div=
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 {</div><div>=C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Name =3D &quot;myMusicCache&quot;,</div=
><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 QueryEntities=
 =3D new[]</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 {</div><div>=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 new QueryEntity(typeof(int), typeof(Movie))</div><div><br></div>=
<div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
}</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 });</div><div>=C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 List&lt;Movie&gt; movies =3D new List&lt=
;Movie&gt;();</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 IQueryabl=
e&lt;ICacheEntry&lt;int, Movie&gt;&gt; qry =3D</div><div>=C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 cache.AsCacheQueryable().<wbr>Where(=
m =3D&gt; m.Key =3D=3D 1);</div><div><br></div><div>=C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 foreach (ICacheEntry&lt;int, Movie&gt; entry in qry)</=
div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 {</div><div>=C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Console.WriteLine(&quot;Movie=
: &quot; + entry.Value);</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 movies.Add(entry.Value);</div><div>=C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 }</div><div><br></div><div><br></div><div>=C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 return movies;</div><div>=C2=A0 =C2=A0 =C2=
=A0 =C2=A0 }</div></div></div>
</blockquote></div><br></div>

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