The Runtime Image
The Runtime Image
The Fabric3 Server runtime image is organized in the following way:
/bin |
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| Startup modules |
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/lib |
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| Modules required to start the runtime host |
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/boot |
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| Modules required for the runtime bootstrap and primordial system services |
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/host |
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| Libraries shared between the runtime and application (e.g. web services annotations) |
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/extensions |
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| Extension modules that are able to be loaded by all runtime instances |
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/runtimes |
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| Specific runtime instance configuration is hosted by default under this directory |
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| <runtime-name> |
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| top level directory for a runtime configuration |
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| /config |
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| Contains systemConfig.xml for configuring the runtime and extensions |
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| /deploy |
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| File system deploy directory for the controller and single-VM runtimes |
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| /repository |
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| /runtime |
| Extensions only loaded for the runtime image |
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| /user |
| User contributions (only populated on the controller and single-VM runtimes) |
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| /data |
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| Persistent data directory for a runtime instance (e.g. transaction log) |
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| /tmp |
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| Temporary data and artifact cache for a runtime instance |
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Enabling Pass-By-Value Semantics
By default, Fabric3 is configured to use pass-by-reference semantics when invoking remotable services collocated with their clients. This avoids the overhead of parameter copying. In some cases, this may not be desirable, for example, if a service directly modifies parameter data that should not be visible to clients. To avoid this, the runtime can be configured to follow SCA by-value semantics by setting the @enableByValue attribute to true on the SCA setting in serviceConfig.xml:
<sca enableByValue="true"/>