Sewerage Calculator Service is one of the major business logic services which is used for calculation of sewerage charge, generating demand, update existing demand, SMS & email notification to the ULB officials on-demand generation and also triggering demands(job scheduler) at some intervals and estimation of sewerage charge(one-time cost) which involves cost like road-cutting charge, form fee, scrutiny fee etc.
Pre-requisites
Before you proceed with the documentation, make sure the following pre-requisites are met -
Java 8
Kafka server is up and running
egov-persister service is running and has sewerage service persister configs path added in it
PSQL server is running and a database is created to store sewerage connection / application data
Following services should be up and running:
egov-perister
egov-mdms
sw-services
billing-service
Key Functionalities
Sewerage calculator services present in municipal services provide multiple functionalities like calculating sewerage charges, generating demands for a particular sewerage connection, updating demands, SMS & email notification to the ULB officials on-demand generation and also triggering demands(job scheduler) at some intervals and estimation of sewerage charge(one-time cost) which involves cost like road-cutting charge, form fee, scrutiny fee etc. The different functionalities provided by sewerage calculator services are:
Sewerage charge calculation
Demand generation(here as its always non-metered demand will be generated based on time period)
Sewerage charge estimation (one-time cost which involves cost like road-cutting charge, form fee, scrutiny fee etc.)
Deployment Details
Deploy the latest version of sw-service and sw-calculator
Add sewerage-persist.yml file in config folder in git and add that path in persister . (The file path is to be added in environment yaml file in param called persist-yml-path )
Configuration Details
MDMS Configuration
Billing Slabs
Criteria :
connection type
building type
calculation attribute
property usage type
The combination of the above can be used to define the billing slab. Billing Slab is defined in MDMS under sw-services-calculation folder with the SCBillingSlab. The following is the sample slab.
If all criteria will match for that sewerage connection this slab will use for calculation.
Estimation
For application one-time fee, the estimation will return all the related tax head based on criteria. For estimation, all configuration is present in sw-services-calculation.
If the fraction is greater than equal to 0.5 the number is round up else it’s round down. eg: 100.4 will be rounded to 100 while 100.6 will be rounded to 101.
Once sewerage is sent to the calculator, its tax estimates are calculated. Using the tax head estimates demand details are created. For every tax head, the estimated demand generates function will create a corresponding demand detail.
Whenever _calculate API is called demand is first searched based on the connection no or application no and the demand from and to period. If demand already exists the same demand is updated else new demand is generated with consumer code as connection no or application no and demand from and to a period equal to financial year start and end period.
In the case of an update, if the tax head estimates change, the difference in amount for that tax head is added as new demand detail. For example, if the initial demand has one demand detail with SEWERAGE_CHARGE equal to 120
After updating if the SEWERAGE_CHARGE increases to 150 we add one more demand detail to account for the increased amount. The demand detail will be updated to:
