International Business Machines Corporation

Oracle International Corporation

Utkarsh Milind Desai

Srikanth Govindaraj Tamilselvam

Vijayalakshmi Krishnamurthy

Amith Singhee

Sambaran Bandyopadhyay

Karthik Gvd

Alex Mathai

Goldee Udani

Senthil Kumar Kumarasamy Mani

Giriprasad Sridhara

Shivali Agarwal

Amit Vaid

Neha Tomar

Raunak Sinha

One embodiment provides a computer implemented computer implemented method, including: receiving information describing an application to be split into a plurality of modules to be hosted on a remote services environment; identifying a plurality of possible sets of modules for splitting the application; providing a visualization of the application split into modules, wherein the visualization displays different possible sets of modules as different layers within the visualization; and splitting, responsive to receiving user input within the visualization selecting one of the different layers, the application into one of the different possible sets of modules based upon the one of the different layers.

Visualization for splitting an application into modules

Methods, systems, and computer program products for constraints-based refactoring of monolith applications through attributed graph embeddings are provided herein. A computer-implemented method includes performing an analysis of source code of a monolith application to identify structural features and behavioral features; generating a graph structure representing the monolith application based on the identified structural features and the identified behavioral features, wherein the graph structure comprises: a plurality of nodes, each node corresponding to one of a plurality of software modules of the monolith application, and a plurality of edges between the plurality nodes, each edge representing a relationship of the corresponding nodes; automatically identifying constraints associated with the plurality of nodes in the graph structure based on the analysis of the source code; clustering the nodes using a convolutional neural network based the constraints; and outputting candidate microservices corresponding to respective ones of the clusters for refactoring the monolith application.

Constraints-based refactoring of monolith applications through attributed graph embeddings

One embodiment provides a method, including: receiving information describing an application to be split into a plurality of microservices; identifying, utilizing a microservices advisor application, application elements of the application; generating, utilizing the microservices advisor application and from the application elements, a heterogenous graph, wherein each node within the heterogenous graph represents an application element and wherein each edge within the heterogenous graph represents a relationship between two nodes connected by the edge; identifying, based upon user input identifying preferences of relationships between nodes, groups of nodes within the heterogenous graph sharing a common attribute; and providing, from the microservices advisor application, a recommendation, based upon the identified groups of nodes, for splitting the application into microservices, wherein the recommendation includes a number of microservices for the application and application elements that should be included within each of the microservices.

Heterogeneous graph generation for application microservices

By analyzing transaction data of an executing application, an application graph is constructed, the application graph comprising a plurality of nodes and a plurality of edges connecting pairs of the plurality of nodes, a node in the application graph corresponding to a module of the application. The plurality of nodes is clustered into a set of clusters. Formation of a cluster in the set of clusters is analyzed, the analyzing identifying a central node of the cluster, a feature importance in placing a node into the cluster, and an edge importance in placing the node into the cluster. Responsive to a confidence value in the cluster being above a threshold confidence value, using the central node of the cluster, the application is refactored into a set of microservices, the cluster corresponding to a microservice, the central node of the cluster corresponding to a component of the microservice.

Application refactoring with explainability

Methods, systems, and computer program products for identifying microservices from a monolith application through static code analysis are provided herein. A method includes performing a static code analysis to extract multiple features of a monolith application; partitioning code elements of the monolith application into multiple groups using an agglomerative clustering process, wherein the agglomerative clustering process is based on the extracted multiple features and a set of clustering metrics; obtaining at least one weight corresponding to one or more of: at least one of the multiple features and at least one of the multiple groups; adjusting the groups based on the at least one weight; generating a list of candidate microservices for the monolith application, wherein each candidate microservice in the list corresponds to a different one of the adjusted multiple groups; and outputting the list of candidate microservices to at least one of a system and a user.

Identifying microservices for a monolith application through static code analysis

Embodiments determine an optimized maintenance schedule for a maintenance program that includes multiple levels, each level including at least one asset (i.e., asset type) and at least one of the levels including a plurality of assets. Embodiments receive historical failure data for each of the assets, the historical failure data generated at least in part by a sensor network. For each asset, embodiments generate a probability density function ('PDF') using kernel density estimation ('KDE'). For each asset, based on a reliability rate threshold, embodiments determine a cumulative density function (&#x201c;CDF&#x201d;) using the PDF. For each asset, embodiments determine an optimized time to failure (&#x201c;TTF&#x201d;) using the CDF. Embodiments then create the schedule for each level that includes a minimum TTF for the assets at each level.

Sensor network for optimized maintenance schedule

Embodiments determine anomalies in sensor data generated by a sensor by receiving an evaluation time window of clean sensor data generated by the sensor. Embodiments receive a threshold value for determining anomalies. When the clean sensor data has a cyclic pattern, embodiments divide the evaluation time window into a plurality of segments of equal length, wherein each equal length comprises the cyclic pattern. When the clean sensor data does not have the cyclic pattern, embodiments divide the evaluation time window into a pre-defined number of plurality of segments of equal length. Embodiments convert the evaluation time window and each of the plurality of segments into corresponding curves using Kernel Density Estimation ('KDE'). For each of the plurality of segments, embodiments determine a Kullback-Leibler ('KL') divergence value between corresponding curves of the segment and the evaluation time window to generate a plurality of KL divergence values.

Univariate anomaly detection in a sensor network

Methods, systems, and computer program products for assisting dependency migration are provided herein. A computer-implemented method includes determining differences between a first version of a dependency used by a software application and each of a plurality of upgrade candidates, the plurality of upgrade candidates comprising at least one of: (i) one or more newer versions of the dependency and (ii) a substitute dependency; identifying, based on the determined differences for a given one of the upgrade candidates, one or more sections of code of the software application that need to be patched in order to be compatible with the given upgrade candidate; and generating a modified version of the software application for the given upgrade candidate that comprises one or more patches for at least a portion of the identified one or more sections of code.

Assisting dependency migration

Embodiments determine anomalies in sensor data generated by a sensor. Embodiments receive a first time window of clean sensor data generated by the sensor, the clean sensor data including anomaly free data, and determine if the clean sensor data includes a cyclic pattern. When the clean sensor data has a cyclic pattern, embodiments divide the first time window into a plurality of segments of equal length, where each equal length includes the cyclic pattern. Embodiments convert the first time window and each of the plurality of segments into corresponding curves using Kernel Density Estimation ('KDE'). For each of the plurality of segments, embodiments determine a Kullback-Leibler ('KL') divergence value between corresponding curves of the segment and the first time window to generate a plurality of KL divergence values.

Growing community of inventors

Bengaluru, India

Utkarsh Milind Desai