Difference between revisions of "Resource Manager"

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==== Design ====
 
==== Design ====
  
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* Synchronization between local and remote (i.e. stored in the IS) state and vice versa
 
* Synchronization between local and remote (i.e. stored in the IS) state and vice versa
 
* ...
 
* ...
 +
 +
  
 
==== Interface  ====
 
==== Interface  ====
 +
The service exposes a <code>ResourceManager</code> portType ...
 +
 +
 +
 +
 +
===== Resource Report =====
 +
After each resource management request, a report is produced and disseminated (via the <code>getReport</code> operation).
 +
 +
For each service, information about the service's dependencies resolution and package deployment are reported.
 +
 +
Possible dependencies states are:
 +
 +
* ''SUCCESS'': all the dependencies have been successfully resolved
 +
* ''FAILED'': some dependencies are missing
 +
 +
Periodically, the Deployer service sends a report on the deployment activity (performed asynchronously with respect to the VREManager request). Such report has a state:
 +
 +
* ''OPEN'': the activity is still ongoing, other reports will follow
 +
* ''CLOSED'' : the activity is closed, no further report will be sent
 +
 +
Possible package states are:
 +
 +
* ''WAITING'': request is still pending
 +
* ''ALREADYDEPLOYED'': the package was already available on the target gHN
 +
* ''SKIPPED'': the package was not deployed due to an error in another service from which it depends on
 +
* ''FAILED'': the deployment failed
 +
* ''DEPLOYED'': the package has been deployed
 +
* ''NOTVERIFIED'': the package has been deployed, but the correctness of the operation cannot be checked (and therefore guaranteed)
 +
* ''ACTIVATED'': the package has been activated
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* ''RUNNING'': the related instance is running
 +
 +
Possible resource states:
 +
 +
* ''ADDED'': the resource was successfully added to the scope
 +
* ''REMOVED'': the resource was successfully removed to the scope
 +
* ''FAILED'': an error occurred and the resource has not been managed
 +
 +
This is a sample report showing the results of a request including the add of a service, a generic resource, a collection and an existing running instance to the managed scope:
 +
 +
<source lang="xml">
 +
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 +
<ResourceReport>
 +
  <ID>4522f7c0-a54c-11dd-8525-e7e836b0fdde</ID>
 +
  <LastUpdate>2008-10-29T00:58:17+01:00</LastUpdate>
 +
  <TargetScope>/gcube/devsec</TargetScope>
 +
  <Services>
 +
    <Service>
 +
      <Class>InformationSystem</Class>
 +
      <Name>IS-Notifier</Name>
 +
      <Version>1.00.00</Version>
 +
      <DependenciesResolutionStatus>SUCCESS</DependenciesResolutionStatus>
 +
      <DeployedOn>9bf172d0-a30c-11dd-88bf-83f7edc13611</DeployedOn>
 +
      <ErrorDescription>-</ErrorDescription>
 +
      <DependenciesResolution>
 +
        <ResolvedDependencies>
 +
          <Dependency>
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            <ServiceClass>InformationSystem</ServiceClass>
 +
            <ServiceName>IS-Notifier</ServiceName>
 +
            <ServiceVersion>1.00.00</ServiceVersion>
 +
            <PackageName>Notifier-service</PackageName>
 +
            <PackageVersion>1.01.00</PackageVersion>
 +
          </Dependency>
 +
          <Dependency>
 +
            <ServiceClass>InformationSystem</ServiceClass>
 +
            <ServiceName>IS-Notifier</ServiceName>
 +
            <ServiceVersion>1.00.00</ServiceVersion>
 +
            <PackageName>Notifier-stubs</PackageName>
 +
            <PackageVersion>1.00.01</PackageVersion>
 +
          </Dependency>
 +
        </ResolvedDependencies>
 +
        <MissingDependencies/>
 +
      </DependenciesResolution>
 +
    </Service>
 +
  </Services>
 +
  <DeploymentActivity>
 +
    <GHN>
 +
      <Host>dlib33.isti.cnr.it:8001</Host>
 +
      <ID>9bf172d0-a30c-11dd-88bf-83f7edc13611</ID>
 +
      <LastReportReceivedOn>2008-10-29T00:58:16+01:00</LastReportReceivedOn>
 +
      <LastReportReceived>
 +
        <Status>OPEN</Status>
 +
        <Packages>
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          <Package>
 +
            <ServiceClass>InformationSystem</ServiceClass>
 +
            <ServiceName>IS-Notifier</ServiceName>
 +
            <ServiceVersion>1.00.00</ServiceVersion>
 +
            <PackageName>Notifier-service</PackageName>
 +
            <PackageVersion>1.01.00</PackageVersion>
 +
            <Status>RUNNING</Status>
 +
            <Message>The package has NOT been successfully deployed. Possible cause: unable to deploy because of a RI of the service is already deployed on this node</Message>
 +
          </Package>
 +
          <Package>
 +
            <ServiceClass>InformationSystem</ServiceClass>
 +
            <ServiceName>IS-Notifier</ServiceName>
 +
            <ServiceVersion>1.00.00</ServiceVersion>
 +
            <PackageName>Notifier-stubs</PackageName>
 +
            <PackageVersion>1.00.01</PackageVersion>
 +
            <Status>ACTIVATED</Status>
 +
            <Message>The package could not be deployed because it depends on a package which has an error</Message>
 +
          </Package>
 +
        </Packages>
 +
      </LastReportReceived>
 +
    </GHN>
 +
  </DeploymentActivity>
 +
  <Resources>
 +
    <Resource>
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      <ID>83080450-a235-11dd-8a29-b025e02401d5</ID>
 +
      <Type>RunningInstance</Type>
 +
      <Status>ADDED</Status>
 +
      <ErrorDescription>-</ErrorDescription>
 +
    </Resource>
 +
    <Resource>
 +
        <ID>61927680-a996-11dd-961c-8eba14a244c3</ID>
 +
        <Type>MetadataCollection</Type>
 +
        <Status>ADDED</Status>
 +
        <ErrorDescription>-</ErrorDescription>
 +
    </Resource>
 +
    <Resource>
 +
        <ID>f2c04460-b446-11dd-8aab-e7a1e3fdae89</ID>
 +
        <Type>GenericResource</Type>
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        <Status>ADDED</Status>
 +
        <ErrorDescription>-</ErrorDescription>
 +
    </Resource>
 +
  </Resources>
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</ResourceReport>
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</source>
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 +
==== gHNManager integration ====
 +
...
 +
 +
==== Deployer integration ====
 +
...
 +
 +
==== Resource Broker integration ====
 
...
 
...

Revision as of 23:05, 16 March 2010

Design

Resource Manager Class Diagram


Points to expand here:

  • Scope state management versus old VRE state management
  • Concept, role and design of ScopedResource
  • Raw state separated from the state behavior to avoid mis-serializations due to any future change in the service implementation
  • Observer pattern-based internal strategy for managing the scope state
  • Local XStream serialization
  • Synchronization between local and remote (i.e. stored in the IS) state and vice versa
  • ...


Interface

The service exposes a ResourceManager portType ...



Resource Report

After each resource management request, a report is produced and disseminated (via the getReport operation).

For each service, information about the service's dependencies resolution and package deployment are reported.

Possible dependencies states are:

  • SUCCESS: all the dependencies have been successfully resolved
  • FAILED: some dependencies are missing

Periodically, the Deployer service sends a report on the deployment activity (performed asynchronously with respect to the VREManager request). Such report has a state:

  • OPEN: the activity is still ongoing, other reports will follow
  • CLOSED : the activity is closed, no further report will be sent

Possible package states are:

  • WAITING: request is still pending
  • ALREADYDEPLOYED: the package was already available on the target gHN
  • SKIPPED: the package was not deployed due to an error in another service from which it depends on
  • FAILED: the deployment failed
  • DEPLOYED: the package has been deployed
  • NOTVERIFIED: the package has been deployed, but the correctness of the operation cannot be checked (and therefore guaranteed)
  • ACTIVATED: the package has been activated
  • RUNNING: the related instance is running

Possible resource states:

  • ADDED: the resource was successfully added to the scope
  • REMOVED: the resource was successfully removed to the scope
  • FAILED: an error occurred and the resource has not been managed

This is a sample report showing the results of a request including the add of a service, a generic resource, a collection and an existing running instance to the managed scope: 

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ResourceReport>
  <ID>4522f7c0-a54c-11dd-8525-e7e836b0fdde</ID>
  <LastUpdate>2008-10-29T00:58:17+01:00</LastUpdate>
  <TargetScope>/gcube/devsec</TargetScope>
  <Services>
    <Service>
      <Class>InformationSystem</Class>
      <Name>IS-Notifier</Name>
      <Version>1.00.00</Version>
      <DependenciesResolutionStatus>SUCCESS</DependenciesResolutionStatus>
      <DeployedOn>9bf172d0-a30c-11dd-88bf-83f7edc13611</DeployedOn>
      <ErrorDescription>-</ErrorDescription>
      <DependenciesResolution>
        <ResolvedDependencies>
          <Dependency>
            <ServiceClass>InformationSystem</ServiceClass>
            <ServiceName>IS-Notifier</ServiceName>
            <ServiceVersion>1.00.00</ServiceVersion>
            <PackageName>Notifier-service</PackageName>
            <PackageVersion>1.01.00</PackageVersion>
          </Dependency>
          <Dependency>
            <ServiceClass>InformationSystem</ServiceClass>
            <ServiceName>IS-Notifier</ServiceName>
            <ServiceVersion>1.00.00</ServiceVersion>
            <PackageName>Notifier-stubs</PackageName>
            <PackageVersion>1.00.01</PackageVersion>
          </Dependency>
        </ResolvedDependencies>
        <MissingDependencies/>
      </DependenciesResolution>
    </Service>
  </Services>
  <DeploymentActivity>
    <GHN>
      <Host>dlib33.isti.cnr.it:8001</Host>
      <ID>9bf172d0-a30c-11dd-88bf-83f7edc13611</ID>
      <LastReportReceivedOn>2008-10-29T00:58:16+01:00</LastReportReceivedOn>
      <LastReportReceived>
        <Status>OPEN</Status>
        <Packages>
          <Package>
            <ServiceClass>InformationSystem</ServiceClass>
            <ServiceName>IS-Notifier</ServiceName>
            <ServiceVersion>1.00.00</ServiceVersion>
            <PackageName>Notifier-service</PackageName>
            <PackageVersion>1.01.00</PackageVersion>
            <Status>RUNNING</Status>
            <Message>The package has NOT been successfully deployed. Possible cause: unable to deploy because of a RI of the service is already deployed on this node</Message>
          </Package>
          <Package>
            <ServiceClass>InformationSystem</ServiceClass>
            <ServiceName>IS-Notifier</ServiceName>
            <ServiceVersion>1.00.00</ServiceVersion>
            <PackageName>Notifier-stubs</PackageName>
            <PackageVersion>1.00.01</PackageVersion>
            <Status>ACTIVATED</Status>
            <Message>The package could not be deployed because it depends on a package which has an error</Message>
          </Package>
        </Packages>
      </LastReportReceived>
    </GHN>
  </DeploymentActivity>
  <Resources>
    <Resource>
      <ID>83080450-a235-11dd-8a29-b025e02401d5</ID>
      <Type>RunningInstance</Type>
      <Status>ADDED</Status>
      <ErrorDescription>-</ErrorDescription>
    </Resource>
    <Resource>
        <ID>61927680-a996-11dd-961c-8eba14a244c3</ID>
        <Type>MetadataCollection</Type>
        <Status>ADDED</Status>
        <ErrorDescription>-</ErrorDescription>
    </Resource>
    <Resource>
        <ID>f2c04460-b446-11dd-8aab-e7a1e3fdae89</ID>
        <Type>GenericResource</Type>
        <Status>ADDED</Status>
        <ErrorDescription>-</ErrorDescription>
    </Resource>
  </Resources>
</ResourceReport>

gHNManager integration

...

Deployer integration

...

Resource Broker integration

...

Retrieved from "https://gcube.wiki.gcube-system.org/index.php?title=Resource_Manager&oldid=9182"