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create a simple energy meter "backend" and ""frontend".

$10-30 CAD

Closed
Posted almost 5 years ago

$10-30 CAD

Paid on delivery
Java Application with SpringBoot, JPA, Hibernate, Postges, Rest-Service You write an application based on a given sourcecode (reimplementation with changes). The given sourcecode of a plain java application collects data from a serial interface (/tty/USB0), interpret these data and save them to the filesystem. [watch: [login to view URL]] After you have created the database tables. Your task is to collect and interpret data as mentioned above and save them to the database. You will write a REST-Service to provide the collected data and write some web-pages (responsive design). [watch: [login to view URL]] The data are metering data and contains the consumption and the power of three phases. [watch: [login to view URL] & [login to view URL]] Please, watch the process as specified. [watch: [login to view URL]] The data that has to be processed, comes from an energy meter over the IR-diod to the serial interface /tty/USB0. Because the application runs on a linux device, this interface is a “normal” file to read. [watch: [login to view URL]] First, the application stores the values plane into a table (may be called ‘raw-data’) [watch: [login to view URL]] Than there must be a ‘statistic-data’ table where the application stores one dataset for a minute, an hour, a day, a week, a month and a year by a type (resolution), implemented as an enumeration. This dataset contains the consumption of this period, a minimum-, a maximum- and an average value of the three phases and the timestamp. Every minute, hour, day, week, month and year we get another dataset (INSERT). Within the period, the dataset will be updated for all fields [minute, hour, day, week, month, year]: [logic:] set [login to view URL] = [login to view URL] set table.dataset.count++ set [login to view URL] = [login to view URL] set [login to view URL] = [login to view URL] set [login to view URL] = [login to view URL] - [login to view URL] of this [login to view URL] set ([login to view URL] + [login to view URL])/2 if [login to view URL]>[login to view URL] -> set maxValue if [login to view URL]<[login to view URL] -> set minValue ...same for phase2 and phase3 [/logic] Every two seconds, the meter will provide a new realtime dataset as an input. For the client-side we need some REST endpoints providing the data with json. An endpoint to provide long term polling to give all realtime data every two seconds An endpoint to provide the statistic values for a timeframe and the resolution (type of the dataset) To visualize the result, there is a responsive web page in multilanguage to show the realtime data like the follwing: actual consumption actual power P1 actual power P2 actual power P3 There is the possibility to switch the language, if there are more then one language configured (configured by different files for each language). There is the possibility to show details by hitting a chart button -> switch to a new site with a bar chart showing the consumption of each days of the current week. You don’t have to implement the shown “refresh-button” from the mockup. There must also be a settings-page to type a key, validated by a RSA-key or something similar. If the validation was successful once, there will be shown an other page to view statistics for a given time frame and different granularities (minute - for an hour; hour - for a day; day - for a week; day - for a month; month - for a year). To create a valid key 6-12 characters, you need to implement a code generator with the key mentioned above. The application must have a test covering for all logics. The IDE must be Eclipse (or STS) or intelliJ. The build system is gradle. You deliver the sourcecode, an executable jar (SpringBoot) containing the Webservice and the html pages. Because you are a professional developer, it might be very easy for you to implement this small tool. If you aren’t a full stack developer, you can send an offer for the backend or the frontend part.
Project ID: 19247616

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3 proposals
Remote project
Active 5 yrs ago

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3 freelancers are bidding on average $50 CAD for this job
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Hello, We have a team of Skilled Java-J2EE professionals with experience up to 8 years. ===== Our Expertise in Java / J2EE : * Desktop Applications : Swing, Eclipse Rich Client Platform, AWT, SWT, RMI * Frameworks: Spring, Spring MVC, Spring Boot, Microservice, Spring Security, Spring Social, Struts, Hibernate ,JPA, Lucerne, Quartz, Ant, jUnit, DbUnit, Mybatis * Web Technology : JSP, JSTL, JSF, JQuery, Ajax, JavaScript, DWR, FCK Editor, Extjs * Application Servers : JBoss, WebLogic, WebSphere, Apache Tomcat, Glassfish * Databases : MySQL 4.x/5.x, Oracle 8i/9i/10g/11g, Postgre SQL * Web Services : SOAP, WSDL, RESTFUL Web Services, Apache Axis * IDE : Eclipse, Net Beans, Web Ratio (Model Based Application Development IDE) , Spring IDE * Payment Gateway : PayPal Integration [Experienced in integrating other payment gateways too] * Project Management : SDLC, AGILE ===== We are available from Monday To Friday, 9 hours a day. Our timezone is GMT+5.30. Please initiate chat to check our understandings and queries. You will be able to communicate directly with the expert working on your project. After having detail discussion we can come to estimation / quote. We look forward to have long term engagement on the basis of quality of our work evinced in this project. Thanks.
$100 CAD in 1 day
4.9 (149 reviews)
7.8
7.8
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Hey! This sounds like a really interesting project and I would love to work on it! I have gone through the project description and I'm confident with my Java skills and React skills to be able to accomplish the objectives set out for this project. The project requirements sound clear enough and I will be sure to stay in touch with you if there's any issues. I look forward to showing you what I can do! While I am typically more comfortable working on the backend, I believe that I can also do a thorough job for the frontend to your satisfaction. Kind regards!
$25 CAD in 10 days
0.0 (0 reviews)
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About the client

Flag of NIGERIA
AGBADO, Nigeria
4.7
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Member since Dec 1, 2014

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