Emc IP Holding Company LLC

Emc Corporation

James Odis Pendergraft

Jichao Zhang

Hao Sun

Norman Speciner

Wei Wang

Chao Wang

Bruce Rabe

Xuan Tang

Chun Wei

Yue Zhao

Kenneth D Lee

Vincent Ma

Qiang Ma

Meiling Ge

Peter Jun Peng

Jeegn Chen

Chen Zhang

Scott E Joyce

Ying Xie

Dazhi Dong

Xiaogang Wang

Yuanjie Wu

Xing Chen

Binhua Lu

Jun Peng

David A Parenti

Nicholas Wei

Seven Duan

Link Yu

Sherman Liu

Harbee Huijing Wang

Described are techniques for request processing. A request may be received from a requester for first data to be returned to the requester. The request may be in accordance with an application programming interface. The first data may include a plurality of objects each including a value for a first property. The request may include a parameter of the application programming interface indicating to return the plurality of objects sorted in accordance with natural ordering based on the first property of each of the plurality of objects. The natural ordering may be performed as the default ordering. With natural ordering, one or more consecutive digits in a string are treated as a single numeric value rather than individual characters. First processing may be performed to service the request and obtain the first data. A response, including the first data, may be generated in accordance with the first processing.

Natural order API calls

A method, computer program product, and computing system for receiving an inquiry for a storage system from a user, wherein the inquiry concerns one or more resources/properties of the storage system. The inquiry is processed to identify one or more unavailability errors, wherein an unavailability error occurs when a resource/property identified within the inquiry is unavailable on the storage system. A database is queried to obtain information on the one or more resources/properties of the storage system, thus generating a search result. The search result is filtered to remove information corresponding to the one or more unavailability errors.

Querying system and method

An aspect includes identifying one or more dependencies, via a feature toggle component of an application programming interface (API), with respect to features associated with a set of resources. An aspect also includes populating identified dependencies within a metadata table corresponding to the API and defining a multi-level access control feature for the resource. The multi-level access control includes a top level that identifies the resource, and a mid level that identifies a first set of properties for the resource. An aspect further includes populating fields in the metadata table with the first set of properties and a corresponding mid-level indicator, and enabling access to the resource at varying levels of granularity based on the identified dependencies in the metadata table for the resource and the mid level-indicator for the first set of properties.

Expression-based feature toggle in an application programming interface (API)

Improved systems, methods, and techniques for generating representational state transfer (REST) requests from a client computer to a server computer. The disclosed techniques employ a REST application programming interface (also referred to as the 'RESTful API') for use in receiving the REST requests at the server computer from the client computer, and providing REST responses from the server computer to the client computer. The disclosed techniques further employ an intelligent REST client configured as a webpage (also referred to as the 'intelligent REST client webpage') that can be accessed by a browser running on the client computer, and transmitted or otherwise served by the server computer for display on the browser of the client computer. The intelligent REST client webpage may be employed by a user of the client computer for efficiently interacting with the RESTful API of the server computer.

Intelligent REST client for operating a data storage system

Techniques for request processing may include: receiving, at a data storage system, a plurality of requests from one or more clients, wherein the plurality of requests are in accordance with an application programming interface (API); collecting usage information regarding the plurality of requests; and periodically transmitting portions of the usage information to a data center. The usage information may include usage statistics regarding usage aspects of the API with respect to different types or classes of components in the data storage system. The usage information may be further analyzed for any suitable purpose such as to prioritize and identify existing features, services and/or commands for further development and improvement; identify unused or infrequently used features, commands, and/or parameters; and identify potential user interface enhancement.

Telemetry service

A method, computer program product, and computing system for receiving a language-generic message identifier from a storage system that is for a client electronic device. A preferred language is identified for the client electronic device. A database is searched using the language-generic message identifier and the preferred language to identify a language-specific notification.

Notification system and method

A data storage system executes a system management component initiating and monitoring a multi-task job affecting a storage resource such as a storage device. Execution includes maintaining a job data object and a set of task data objects for the multi-task job. A task operates upon the storage resource has a respective task data object containing an identifier of the storage resource as a task-affected storage resource. The job data object is used by a job-level function (e.g., job level of a management GUI) and initially lacks the identifier of the storage resource. During execution, the identifier of the storage resource is copied from the task data object to the job data object as an identifier of a job-affected storage resource, which is then used in subsequent performance of the job-level function (e.g., displaying a hyperlink for the storage resource in a job-level screen of the management GUI).

Data storage system management with promotion of task-level resource identifiers to higher objects

Described are techniques for request processing. A server receives from a client a request for first data to be returned to the client. The first data includes a first property of an object. The object is included in an object model and includes a predefined property. The first property is not a predefined property of the object and is a new property defined using an expression included in the request. The request includes any of the predefined property and a constant. First processing is performed at the server to service the request and obtain the first data. At the server in accordance with the first processing, a response to the request including the first data is generated.

Defining new properties using expressions in API calls

Natural order in API calls

Described are techniques for processing requests. A profile is recorded comprising a plurality of prior requests from a client to a server. The plurality of prior requests associated with first data. A cached copy of the first data is stored in a cache of the server. A quality of service associated with the received request is determined for affecting when the update is applied to the cached copy of first data. The quality of service associated with the received request is dependent on the prior requests in the profile. The first update is applied to the first data. In accordance with the quality of service, the first update is applied to the cached copy of the first data.

Techniques for cache updates based on quality of service

Examples are generally directed towards managing query responses. A server receives an unspecified property request associated with a resource. The request identifies a resource and omits a property field parameter. A set of instances associated with the resource is identified. An identifier for each instance in the set of instances is identified to form a set of identifiers. The server returns only the set of identifiers to the client as a response to the unspecified property request. On determining the server has received a types-feed request from the client, the server identifies all possible property types for the resource to form a list of all property types. The server returns the list of all property types to the client as a response to the types-feed request.

Returning identifiers in default query responses

Examples are generally directed towards managing paginated data. A server receives a page-to-identifier query from a client. The page-to-identifier query includes an identifier of a selected object instance. The server generates an ordered list of object instances corresponding to at least one ordering criteria paginated into a set of pages. The server identifies a page in the set of pages including the selected instance to form a results page. The results page includes the selected instance. The server returns the results page to the client.

Managing paginated data

The subject disclosure is generally directed towards caching property values in a sparse cache for use in translating notifications to contain property values related to a source instance, e.g., for use in SMI-S compliant notifications (deletion indications). When a deletion indication translation needs properties that are unavailable in the current source instance, a cache is accessed to obtain the previous related property values. The deletion indication is translated based upon the related property values, and output, e.g., as a translated deletion indication to a client subscriber.

Deletion indication implementation based on internal model

Described are techniques for consolidating tasks into a composite job. A server processes a composite request to create a composite job on the server. The composite request comprises a plurality of nested job create requests. The composite job comprises a plurality of jobs. Each job in the plurality of jobs corresponds to a job create request in the plurality of nested job create requests. The server generates a dependency tree indicating a dependency of each job in the plurality of jobs. The server executes the composite job in accordance with the dependency tree. On determining that a first job is dependent on a second job, the server executes the second job prior to executing the first job. The server passes the output of the second job as input to the first job.

Consolidating tasks into a composite request

The subject disclosure is generally directed towards caching property values in a sparse cache for use in translating notifications to contain previous and source property values, e.g., for use in SMI-S compliant notifications (modification indications). When a modification indication that needs a previous instance and source instance, but only the source instance is available, a cache is accessed to obtain the previous property value. The modification indication is translated to contain the previous and source instance, and output, e.g., to a client subscriber. The cache is updated with the property values of the source instance in anticipation of being needed for a subsequent modification indication of that property.

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Raleigh, NC, United States of America

James Odis Pendergraft