System and method for dynamic clustered JMS in an application server environment
First Claim
1. A system for providing a dynamic clustered messaging service in an application server environment, comprising:
- one or more computers having memory and at least one processor, the application server environment executing thereon and associated with a domain for execution of software applications and a plurality of deployable resources,wherein the domain and a plurality of partitions are provided at a cluster including a plurality of servers operating within the application server environment;
wherein each partition of the plurality of partitions provides a subdivision of the domain, and includes a resource group that enables partition-specific information for the deployable resources; and
wherein the cluster is configured to vary a number of the plurality of servers based on a service load of applications running on the cluster, and failure and restart of the plurality of servers;
a messaging service for communicating messages between components of the applications running on the cluster, the messaging service including instances of messaging service artifacts running on the plurality of servers; and
a placement engine residing on each of the plurality of servers, whereupon a determination that a server on which an active placement engine fails, an inactive placement engine on one of the others of the plurality of servers is made active, andwherein an active placement engine is configured to migrate one or more of the instances of messaging service artifacts between servers as the number of servers in the cluster and a number of the instances of messaging service artifacts is varied,wherein the active placement engine selects a server to which a particular messaging service artifact is migrated based on a distribution policy and a number of messaging service artifacts presently provided on each of the available servers.
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Abstract
In accordance with an embodiment, a system and method provides a dynamic clustered messaging service in an application server environment. A cluster includes one or more servers operating within the application server environment and is configured to vary a number of the servers based on a service load of applications running on the cluster. The number also varies based on failure and restart of the servers. A messaging service for communicating messages between components of the applications includes instances of messaging service artifacts running on the one or more servers. A placement engine operating on the cluster is configured to migrate the instances of messaging service artifacts between the one or more servers based on a set of rules as the number of the one or more servers in the cluster expands and contracts and as a number of the instances of messaging service artifacts expands and contracts.
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Citations
19 Claims
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1. A system for providing a dynamic clustered messaging service in an application server environment, comprising:
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one or more computers having memory and at least one processor, the application server environment executing thereon and associated with a domain for execution of software applications and a plurality of deployable resources, wherein the domain and a plurality of partitions are provided at a cluster including a plurality of servers operating within the application server environment; wherein each partition of the plurality of partitions provides a subdivision of the domain, and includes a resource group that enables partition-specific information for the deployable resources; and wherein the cluster is configured to vary a number of the plurality of servers based on a service load of applications running on the cluster, and failure and restart of the plurality of servers; a messaging service for communicating messages between components of the applications running on the cluster, the messaging service including instances of messaging service artifacts running on the plurality of servers; and a placement engine residing on each of the plurality of servers, whereupon a determination that a server on which an active placement engine fails, an inactive placement engine on one of the others of the plurality of servers is made active, and wherein an active placement engine is configured to migrate one or more of the instances of messaging service artifacts between servers as the number of servers in the cluster and a number of the instances of messaging service artifacts is varied, wherein the active placement engine selects a server to which a particular messaging service artifact is migrated based on a distribution policy and a number of messaging service artifacts presently provided on each of the available servers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 18)
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9. A method for providing a dynamic clustered messaging service in an application server environment, comprising:
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providing, at one or more computers having memory and at least one processor, the application server environment executing thereon and associated with a domain for execution of software applications and a plurality of deployable resources, wherein the domain and a plurality of partitions are provided at a cluster including a plurality of servers operating within the application server environment; wherein each partition of the plurality of partitions provides a subdivision of the domain, and includes a resource group that enables partition-specific information for the deployable resources; and wherein the cluster is configured to vary a number of the plurality of servers based on a service load of applications running on the cluster, and failure and restart of the plurality of servers; providing a messaging service for communicating messages between components of the applications running on the cluster, the messaging service including instances of messaging service artifacts running on the plurality of servers; providing a placement engine residing on each of the plurality of servers, whereupon a determination that a server on which an active placement engine fails, an inactive placement engine on one of the others of the plurality of servers is made active, and migrating, via an active placement engine, one or more of the instances of messaging service artifacts between servers as the number of servers in the cluster and a number of the instances of messaging service artifacts is varied, wherein the active placement engine selects a server to which a particular messaging service artifact is migrated based on a distribution policy and a number of messaging service artifacts presently provided on each of the available servers. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 19)
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17. A non-transitory computer readable storage medium, including instructions stored thereon which when read and executed by one or more computers cause the one or more computers to perform the steps comprising:
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providing, at one or more computers having memory and at least one processor, the application server environment executing thereon and associated with a domain for execution of software applications and a plurality of deployable resources, wherein the domain and a plurality of partitions are provided at a cluster including a plurality of servers operating within the application server environment; wherein each partition of the plurality of partitions provides a subdivision of the domain, and includes a resource group that enables partition-specific information for the deployable resources; and wherein the cluster is configured to vary a number of the plurality of servers based on a service load of applications running on the cluster, and failure and restart of the plurality of servers; providing a messaging service for communicating messages between components of the applications running on the cluster, the messaging service including instances of messaging service artifacts running on the plurality of servers; providing a placement engine residing on each of the plurality of servers, whereupon a determination that a server on which an active placement engine fails, an inactive placement engine on one of the others of the plurality of servers is made active, and migrating, via an active placement engine, one or more of the instances of messaging service artifacts between servers as the number of servers in the cluster and a number of the instances of messaging service artifacts is varied, wherein the active placement engine selects a server to which a particular messaging service artifact is migrated based on a distribution policy and a number of messaging service artifacts presently provided on each of the available servers.
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Specification