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Posted to users@felix.apache.org by li...@io7m.com on 2016/08/01 15:29:47 UTC
Silently failing declarative services?
Hello.
I'm learning to use OSGi and am using Felix as the container. I have a
trivial Maven project that implements a simple service. There are two
implementations: One using the old style BundleActivator interface and
the other using modern declarative service annotations.
API module:
https://github.com/io7m/osgitest-20160801/blob/master/service0-api/src/main/java/com/io7m/service0/api/SpeakerType.java
https://github.com/io7m/osgitest-20160801/blob/master/service0-api/pom.xml
Old-style BundleActivator-based service:
https://github.com/io7m/osgitest-20160801/blob/master/service0-provider-imperative/src/main/java/com/io7m/service0/provider_imperative/Speaker.java
https://github.com/io7m/osgitest-20160801/blob/master/service0-provider-imperative/pom.xml
New declarative style service:
https://github.com/io7m/osgitest-20160801/blob/master/service0-provider-declarative/src/main/java/com/io7m/service0/provider_declarative/Speaker.java
https://github.com/io7m/osgitest-20160801/blob/master/service0-provider-declarative/pom.xml
The manifest created by compiling the "imperative" module looks correct
(the text wrapping is actually present in the manifest):
--8<--
Manifest-Version: 1.0
Bnd-LastModified: 1470064469312
Build-Jdk: 1.8.0_92
Built-By: someone
Bundle-Activator: com.io7m.service0.provider_imperative.Speaker
Bundle-License: http://io7m.com/license/isc.txt
Bundle-ManifestVersion: 2
Bundle-Name: service0-provider-imperative
Bundle-SymbolicName: com.io7m.experimental.service0-provider-imperative
Bundle-Version: 0.1.0
Created-By: Apache Maven Bundle Plugin
Export-Package: com.io7m.service0.provider_imperative;uses:="com.io7m.se
rvice0.api,org.osgi.framework";version="0.1.0",com.io7m.service0.api;ve
rsion="0.1.0"
Import-Package: com.io7m.service0.api;version="[0.1,0.2)",org.osgi.frame
work;version="[1.8,2)"
Require-Capability: osgi.ee;filter:="(&(osgi.ee=JavaSE)(version=1.8))"
Tool: Bnd-3.2.0.201605172007
-->8--
When the bundle is installed and started in Felix, I get the expected
messages on stdout:
g! install service0-provider-imperative/target/service0-provider-imperative-0.1.0.jar
Bundle ID: 5
g! start 5
DEBUG: WIRE: [com.io7m.experimental.service0-provider-imperative [5](R5.0)] osgi.wiring.package;(&(osgi.wiring.package=org.osgi.framework)(version>=1.8.0)(!(version>=2.0.0))) -> [org.apache.felix.framework [0](R 0)]
DEBUG: WIRE: [com.io7m.experimental.service0-provider-imperative [5](R 5.0)] osgi.ee; (&(osgi.ee=JavaSE)(version=1.8)) -> [org.apache.felix.framework [0](R 0)] Speaker: constructor
Speaker: start org.apache.felix.framework.BundleContextImpl@3870e6b0
The manifest created by compiling the "declarative" module looks correct:
--8<--
Manifest-Version: 1.0
Bnd-LastModified: 1470064469068
Build-Jdk: 1.8.0_92
Built-By: someone
Bundle-License: http://io7m.com/license/isc.txt
Bundle-ManifestVersion: 2
Bundle-Name: service0-provider-declarative
Bundle-SymbolicName: com.io7m.experimental.service0-provider-declarative
Bundle-Version: 0.1.0
Created-By: Apache Maven Bundle Plugin
Export-Package: com.io7m.service0.provider_declarative;uses:="com.io7m.s
ervice0.api";version="0.1.0",com.io7m.service0.api;version="0.1.0"
Import-Package: com.io7m.service0.api;version="[0.1,0.2)"
Provide-Capability: osgi.service;objectClass:List<String>="com.io7m.serv
ice0.api.SpeakerType"
Require-Capability: osgi.ee;filter:="(&(osgi.ee=JavaSE)(version=1.8))"
Service-Component: OSGI-INF/com.io7m.service0.provider_declarative.Speak
er.xml
Tool: Bnd-3.2.0.201605172007
-->8--
The OSGI-INF/com.io7m.service0.provider_declarative.Speaker.xml descriptor
inserted into the jar by the Maven plugin looks correct to me:
--8<--
<?xml version="1.0" encoding="UTF-8"?>
<scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" name="com.io7m.service0.provider_declarative.Speaker" activate="onActivate">
<implementation class="com.io7m.service0.provider_declarative.Speaker"/>
<service>
<provide interface="com.io7m.service0.api.SpeakerType"/>
</service>
</scr:component>
-->8--
However, when installing and starting the bundle, I get nothing:
g! install service0-provider-declarative/target/service0-provider-declarative-0.1.0.jar
Bundle ID: 5
g! start 5
DEBUG: WIRE: [com.io7m.experimental.service0-provider-declarative [5](R 5.0)] osgi.ee; (&(osgi.ee=JavaSE)(version=1.8)) -> [org.apache.felix.framework [0](R 0)]
g! lb
START LEVEL 1
ID|State |Level|Name
0|Active | 0|System Bundle (5.4.0)|5.4.0
1|Active | 1|Apache Felix Bundle Repository (2.0.6)|2.0.6
2|Active | 1|Apache Felix Gogo Command (0.16.0)|0.16.0
3|Active | 1|Apache Felix Gogo Runtime (0.16.2)|0.16.2
4|Active | 1|Apache Felix Gogo Shell (0.10.0)|0.10.0
5|Active | 1|service0-provider-declarative (0.1.0)|0.1.0
Am I missing something here? Why are none of the Speaker methods called?
M
Re: Silently failing declarative services?
Posted by li...@io7m.com.
Hello.
On 2016-08-01T13:09:57 -0400
Benson Margulies <be...@basistech.com> wrote:
> Is your @Component set up with immediate=true?
>
It wasn't. Now it is:
g! install service0-provider-declarative/target/service0-provider-declarative-0.1.0.jar
Bundle ID: 9
g! start 9
DEBUG: WIRE: [com.io7m.experimental.service0-provider-declarative [9](R 9.0)] osgi.ee; (&(osgi.ee=JavaSE)(version=1.8)) -> [org.apache.felix.framework [0](R 0)]
Speaker: constructor
Speaker: onActivate
Thanks!
M
Re: Silently failing declarative services?
Posted by Benson Margulies <be...@basistech.com>.
Is your @Component set up with immediate=true?
On Mon, Aug 1, 2016 at 1:08 PM, <li...@io7m.com> wrote:
> On 2016-08-01T18:26:33 +0200
> Simon Chemouil <sc...@gmail.com> wrote:
>
> > list+org.apache.felix@io7m.com a écrit le 01/08/2016 18:16 :
> > > I don't see a compiled bundle anywhere, only source code. Is there one
> > > available, or do I need to build it?
> >
> > http://felix.apache.org/downloads.cgi
> >
> > or straight from Maven Central.
> >
> > It's also good to have an implementation of Metatype and of the
> > LogService when you use Felix SCR, since it will complain (but not fail)
> > the former is missing, and uses the latter for logging.
>
> Thank you. Somehow failed to see that the links on that page were
> binaries (was looking at the source jars to the right).
>
> On adding the declarative services bundle, I ran across the following:
>
> Caused by: java.lang.ClassNotFoundException: *** Class
> 'org.osgi.service.cm.ConfigurationListener' was not found. Bundle
> org.apache.felix.scr [7] does not import package 'org.osgi.service.cm',
> nor is the package exported by any other bundle or available from the
> system class loader. ***
>
> Some checking online indicated that I needed the configuration admin
> bundle. I now have these bundles installed:
>
> g! lb
> START LEVEL 1
> ID|State |Level|Name
> 0|Active | 0|System Bundle (5.4.0)|5.4.0
> 1|Active | 1|Apache Felix Bundle Repository (2.0.6)|2.0.6
> 2|Active | 1|Apache Felix Configuration Admin Service
> (1.8.10)|1.8.10
> 3|Active | 1|Apache Felix Gogo Command (0.16.0)|0.16.0
> 4|Active | 1|Apache Felix Gogo Runtime (0.16.2)|0.16.2
> 5|Active | 1|Apache Felix Gogo Shell (0.10.0)|0.10.0
> 6|Active | 1|Apache Felix Log Service (1.0.1)|1.0.1
> 7|Active | 1|Apache Felix Metatype Service (1.1.2)|1.1.2
> 8|Active | 1|Apache Felix Declarative Services (2.0.4)|2.0.4
>
> However, this hasn't solved the original problem:
>
> g! install
> service0-provider-declarative/target/service0-provider-declarative-0.1.0.jar
> Bundle ID: 9
> g! start 9
> DEBUG: WIRE: [com.io7m.experimental.service0-provider-declarative [9](R
> 9.0)] osgi.ee; (&(osgi.ee=JavaSE)(version=1.8)) ->
> [org.apache.felix.framework [0](R 0)]
> g! lb
> START LEVEL 1
> ID|State |Level|Name
> 0|Active | 0|System Bundle (5.4.0)|5.4.0
> 1|Active | 1|Apache Felix Bundle Repository (2.0.6)|2.0.6
> 2|Active | 1|Apache Felix Configuration Admin Service
> (1.8.10)|1.8.10
> 3|Active | 1|Apache Felix Gogo Command (0.16.0)|0.16.0
> 4|Active | 1|Apache Felix Gogo Runtime (0.16.2)|0.16.2
> 5|Active | 1|Apache Felix Gogo Shell (0.10.0)|0.10.0
> 6|Active | 1|Apache Felix Log Service (1.0.1)|1.0.1
> 7|Active | 1|Apache Felix Metatype Service (1.1.2)|1.1.2
> 8|Active | 1|Apache Felix Declarative Services (2.0.4)|2.0.4
> 9|Active | 1|service0-provider-declarative (0.1.0)|0.1.0
>
> The service0-provider-declarative bundle appears to be running, but none
> of the
> methods have been called.
>
> M
>
Re: Silently failing declarative services?
Posted by li...@io7m.com.
On 2016-08-01T18:26:33 +0200
Simon Chemouil <sc...@gmail.com> wrote:
> list+org.apache.felix@io7m.com a écrit le 01/08/2016 18:16 :
> > I don't see a compiled bundle anywhere, only source code. Is there one
> > available, or do I need to build it?
>
> http://felix.apache.org/downloads.cgi
>
> or straight from Maven Central.
>
> It's also good to have an implementation of Metatype and of the
> LogService when you use Felix SCR, since it will complain (but not fail)
> the former is missing, and uses the latter for logging.
Thank you. Somehow failed to see that the links on that page were
binaries (was looking at the source jars to the right).
On adding the declarative services bundle, I ran across the following:
Caused by: java.lang.ClassNotFoundException: *** Class
'org.osgi.service.cm.ConfigurationListener' was not found. Bundle
org.apache.felix.scr [7] does not import package 'org.osgi.service.cm',
nor is the package exported by any other bundle or available from the
system class loader. ***
Some checking online indicated that I needed the configuration admin
bundle. I now have these bundles installed:
g! lb
START LEVEL 1
ID|State |Level|Name
0|Active | 0|System Bundle (5.4.0)|5.4.0
1|Active | 1|Apache Felix Bundle Repository (2.0.6)|2.0.6
2|Active | 1|Apache Felix Configuration Admin Service (1.8.10)|1.8.10
3|Active | 1|Apache Felix Gogo Command (0.16.0)|0.16.0
4|Active | 1|Apache Felix Gogo Runtime (0.16.2)|0.16.2
5|Active | 1|Apache Felix Gogo Shell (0.10.0)|0.10.0
6|Active | 1|Apache Felix Log Service (1.0.1)|1.0.1
7|Active | 1|Apache Felix Metatype Service (1.1.2)|1.1.2
8|Active | 1|Apache Felix Declarative Services (2.0.4)|2.0.4
However, this hasn't solved the original problem:
g! install service0-provider-declarative/target/service0-provider-declarative-0.1.0.jar
Bundle ID: 9
g! start 9
DEBUG: WIRE: [com.io7m.experimental.service0-provider-declarative [9](R 9.0)] osgi.ee; (&(osgi.ee=JavaSE)(version=1.8)) -> [org.apache.felix.framework [0](R 0)]
g! lb
START LEVEL 1
ID|State |Level|Name
0|Active | 0|System Bundle (5.4.0)|5.4.0
1|Active | 1|Apache Felix Bundle Repository (2.0.6)|2.0.6
2|Active | 1|Apache Felix Configuration Admin Service (1.8.10)|1.8.10
3|Active | 1|Apache Felix Gogo Command (0.16.0)|0.16.0
4|Active | 1|Apache Felix Gogo Runtime (0.16.2)|0.16.2
5|Active | 1|Apache Felix Gogo Shell (0.10.0)|0.10.0
6|Active | 1|Apache Felix Log Service (1.0.1)|1.0.1
7|Active | 1|Apache Felix Metatype Service (1.1.2)|1.1.2
8|Active | 1|Apache Felix Declarative Services (2.0.4)|2.0.4
9|Active | 1|service0-provider-declarative (0.1.0)|0.1.0
The service0-provider-declarative bundle appears to be running, but none of the
methods have been called.
M
Re: Silently failing declarative services?
Posted by Simon Chemouil <sc...@gmail.com>.
list+org.apache.felix@io7m.com a crit le 01/08/2016 18:16 :
> I don't see a compiled bundle anywhere, only source code. Is there one
> available, or do I need to build it?
http://felix.apache.org/downloads.cgi
or straight from Maven Central.
It's also good to have an implementation of Metatype and of the
LogService when you use Felix SCR, since it will complain (but not fail)
the former is missing, and uses the latter for logging.
HTH,
Simon
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Re: Silently failing declarative services?
Posted by li...@io7m.com.
Hello.
On 2016-08-01T17:32:54 +0200
Frank Lyaruu <fl...@gmail.com> wrote:
> I think you need a bundle providing the SCR runtime:
>
> http://felix.apache.org/documentation/subprojects/apache-felix-service-component-runtime.html
>
> Without a DS implementation it simple won't do anything.
>
> regards, Frank
>
Ah, makes sense. Didn't realise that the 5.4.0 distribution didn't
contain one.
I don't see a compiled bundle anywhere, only source code. Is there one
available, or do I need to build it?
M
Re: Silently failing declarative services?
Posted by Frank Lyaruu <fl...@gmail.com>.
I think you need a bundle providing the SCR runtime:
http://felix.apache.org/documentation/subprojects/apache-felix-service-component-runtime.html
Without a DS implementation it simple won't do anything.
regards, Frank
On Mon, Aug 1, 2016 at 5:29 PM, <li...@io7m.com> wrote:
> Hello.
>
> I'm learning to use OSGi and am using Felix as the container. I have a
> trivial Maven project that implements a simple service. There are two
> implementations: One using the old style BundleActivator interface and
> the other using modern declarative service annotations.
>
> API module:
>
>
> https://github.com/io7m/osgitest-20160801/blob/master/service0-api/src/main/java/com/io7m/service0/api/SpeakerType.java
>
> https://github.com/io7m/osgitest-20160801/blob/master/service0-api/pom.xml
>
> Old-style BundleActivator-based service:
>
>
> https://github.com/io7m/osgitest-20160801/blob/master/service0-provider-imperative/src/main/java/com/io7m/service0/provider_imperative/Speaker.java
>
> https://github.com/io7m/osgitest-20160801/blob/master/service0-provider-imperative/pom.xml
>
> New declarative style service:
>
>
> https://github.com/io7m/osgitest-20160801/blob/master/service0-provider-declarative/src/main/java/com/io7m/service0/provider_declarative/Speaker.java
>
> https://github.com/io7m/osgitest-20160801/blob/master/service0-provider-declarative/pom.xml
>
> The manifest created by compiling the "imperative" module looks correct
> (the text wrapping is actually present in the manifest):
>
> --8<--
> Manifest-Version: 1.0
> Bnd-LastModified: 1470064469312
> Build-Jdk: 1.8.0_92
> Built-By: someone
> Bundle-Activator: com.io7m.service0.provider_imperative.Speaker
> Bundle-License: http://io7m.com/license/isc.txt
> Bundle-ManifestVersion: 2
> Bundle-Name: service0-provider-imperative
> Bundle-SymbolicName: com.io7m.experimental.service0-provider-imperative
> Bundle-Version: 0.1.0
> Created-By: Apache Maven Bundle Plugin
> Export-Package: com.io7m.service0.provider_imperative;uses:="com.io7m.se
> rvice0.api,org.osgi.framework";version="0.1.0",com.io7m.service0.api;ve
> rsion="0.1.0"
> Import-Package: com.io7m.service0.api;version="[0.1,0.2)",org.osgi.frame
> work;version="[1.8,2)"
> Require-Capability: osgi.ee;filter:="(&(osgi.ee=JavaSE)(version=1.8))"
> Tool: Bnd-3.2.0.201605172007
> -->8--
>
> When the bundle is installed and started in Felix, I get the expected
> messages on stdout:
>
> g! install
> service0-provider-imperative/target/service0-provider-imperative-0.1.0.jar
> Bundle ID: 5
> g! start 5
> DEBUG: WIRE: [com.io7m.experimental.service0-provider-imperative
> [5](R5.0)]
> osgi.wiring.package;(&(osgi.wiring.package=org.osgi.framework)(version>=1.8.0)(!(version>=2.0.0)))
> -> [org.apache.felix.framework [0](R 0)]
> DEBUG: WIRE: [com.io7m.experimental.service0-provider-imperative [5](R
> 5.0)] osgi.ee; (&(osgi.ee=JavaSE)(version=1.8)) ->
> [org.apache.felix.framework [0](R 0)] Speaker: constructor
> Speaker: start org.apache.felix.framework.BundleContextImpl@3870e6b0
>
> The manifest created by compiling the "declarative" module looks correct:
>
> --8<--
> Manifest-Version: 1.0
> Bnd-LastModified: 1470064469068
> Build-Jdk: 1.8.0_92
> Built-By: someone
> Bundle-License: http://io7m.com/license/isc.txt
> Bundle-ManifestVersion: 2
> Bundle-Name: service0-provider-declarative
> Bundle-SymbolicName: com.io7m.experimental.service0-provider-declarative
> Bundle-Version: 0.1.0
> Created-By: Apache Maven Bundle Plugin
> Export-Package: com.io7m.service0.provider_declarative;uses:="com.io7m.s
> ervice0.api";version="0.1.0",com.io7m.service0.api;version="0.1.0"
> Import-Package: com.io7m.service0.api;version="[0.1,0.2)"
> Provide-Capability: osgi.service;objectClass:List<String>="com.io7m.serv
> ice0.api.SpeakerType"
> Require-Capability: osgi.ee;filter:="(&(osgi.ee=JavaSE)(version=1.8))"
> Service-Component: OSGI-INF/com.io7m.service0.provider_declarative.Speak
> er.xml
> Tool: Bnd-3.2.0.201605172007
> -->8--
>
> The OSGI-INF/com.io7m.service0.provider_declarative.Speaker.xml descriptor
> inserted into the jar by the Maven plugin looks correct to me:
>
> --8<--
> <?xml version="1.0" encoding="UTF-8"?>
> <scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0"
> name="com.io7m.service0.provider_declarative.Speaker" activate="onActivate">
> <implementation class="com.io7m.service0.provider_declarative.Speaker"/>
> <service>
> <provide interface="com.io7m.service0.api.SpeakerType"/>
> </service>
> </scr:component>
> -->8--
>
> However, when installing and starting the bundle, I get nothing:
>
> g! install
> service0-provider-declarative/target/service0-provider-declarative-0.1.0.jar
> Bundle ID: 5
> g! start 5
> DEBUG: WIRE: [com.io7m.experimental.service0-provider-declarative [5](R
> 5.0)] osgi.ee; (&(osgi.ee=JavaSE)(version=1.8)) ->
> [org.apache.felix.framework [0](R 0)]
> g! lb
> START LEVEL 1
> ID|State |Level|Name
> 0|Active | 0|System Bundle (5.4.0)|5.4.0
> 1|Active | 1|Apache Felix Bundle Repository (2.0.6)|2.0.6
> 2|Active | 1|Apache Felix Gogo Command (0.16.0)|0.16.0
> 3|Active | 1|Apache Felix Gogo Runtime (0.16.2)|0.16.2
> 4|Active | 1|Apache Felix Gogo Shell (0.10.0)|0.10.0
> 5|Active | 1|service0-provider-declarative (0.1.0)|0.1.0
>
> Am I missing something here? Why are none of the Speaker methods called?
>
> M
>
>