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Core Services is one of the key DIGIT components. Browse through this section to learn more about the key configuration and integration details of these core services.
DIGIT is API based Platform here each API is denoting to a DIGIT resource. Access Control Service (ACS) primary job is to authorise end-user based on their roles and provide access to the DIGIT platform resources. Access control functionality basically works based on below points:
Actions: Actions are events which are performed by a user. This can be an API end-point or Frontend event. This is MDMS master
Roles: Role are assigned to the user, a user can hold multiple roles. Roles are defined in MDMS masters.
Role-Action: Role actions are mapping b/w Actions and Roles. Based on role, action mapping access control service identifies applicable action for the role.
Before you proceed with the configuration, make sure the following pre-requisites are met -
Java 8
MDMS service is up and running
Serve the applicable actions for a user based on user role (To print menu three).
On each action which is performed by a user, access control looks at the roles for the user and validate actions mapping with the role.
Support tenant-level role-action. For instance, an employee from Amritsar can have a role of APPROVER for other ULB like Jalandhar and hence will be authorised to act as APPROVER in Jalandhar.
Deploy the latest version of Access Control Service
Deploy MDMS service to fetch the Role Action Mappings
Define the roles
Add the Actions (URL)
Add the role action mapping
(The details about the fields in the configuration can be found in the swagger contract)
Any microservice which requires authorisation can leverage the functionalities provided by access control service.
Any new microservice that is to be added in the platform won’t have to worry about authorisation. It can just add it’s role action mapping in the master data and Access Control Service will perform authorisation whenever API for the microservice is called.
To integrate with Access Control Service the role action mapping has to be configured(added) in the MDMS service.
The service needs to call /actions/_authorize API of Access Control Service to check for authorisation of any request
Title
Link
API Contract
Title
Link
All content on this page by eGov Foundation is licensed under a Creative Commons Attribution 4.0 International License.
A core application which provides location details of the tenant for which the services are being provided.
Before you proceed with the documentation, make sure the following pre-requisites are met -
Java 8
PSQL server is running and database is created
Knowledge of egov-mdms service
egov-mdms service is running and all the required mdms master are loaded in it
The location information is also known as boundary data of ULB
Boundary data can be of different hierarchies ADMIN, ELECTION hierarchy which is defined by the Administrators, Revenue hierarchy defined by the Revenue department.
The election hierarchy has the locations divided into several types like zone, election ward, block, street and locality. The Revenue hierarchy has the locations divided into a zone, ward, block and locality.
The model which defines the localities like zone, ward and etc is boundary object which contains information like name, lat, long, parent or children boundary if any. The boundaries come under each other in a hierarchy like a zone contains wards, ward contains blocks, a block contains locality. The order in which the boundaries are contained in each other will differ based on the tenants.
Environment Variables
Description
egov.services.egov_mdms.hostname
Host name for MDMS service.
egov.services.egov_mdms.searchpath
MDMS Search URL.
egov.service.egov.mdms.moduleName
MDMS module which contain boundary master.
egov.service.egov.mdms.masterName
MDMS master file which contain boundary detail.
Add/Update the mdms master file which contain boundary data of ULB’s.
Add Role-Action mapping for egov-location API’s.
Deploy/Redeploy the latest version of egov-mdms service.
Fill the above environment variables in egov-location with proper values.
Deploy the latest version of egov-location service.
The boundary data has been moved to mdms from the master tables in DB. The location service fetches the JSON from mdms and parses it to the structure of boundary object as mentioned above. A sample master would look like below.
Attribute Name
Description
tenantId
The tenantId (ULB code) for which the boundary data configuration is defined.
moduleName
The name of the module where TenantBoundary master is present.
TenantBoundary.hierarchyType.code
Unique code of the hierarchy type.
TenantBoundary.hierarchyType.name
Unique name of the hierarchy type.
TenantBoundary.boundary.id
Id of boundary defined for particular hierarchy.
boundaryNum
Sequence number of boundary attribute defined for the particular hierarchy.
name
Name of the boundary like Block 1 or Zone 1 or City name.
localname
Local name of the boundary.
longitude
Longitude of the boundary.
latitude
Latitude of the boundary.
label
Label of the boundary.
code
Code of the boundary.
children
Details of its sub-boundaries.
The egov-location API’s can be used by any module which needs to store the location details of the tenant.
Get the boundary details based on boundary type and hierarchy type within the tenant boundary structure.
Get the geographical boundaries by providing appropriate GeoJson.
Get the tenant list in the given latitude and longitude.
To integrate, host of egov-location should be overwritten in helm chart.
/boundarys/_search should be added as the search endpoint for searching boundary details based on tenant Id, Boundary Type, Hierarchy Type etc.
/geography/_search should be added as the search endpoint .This method handles all requests related to geographical boundaries by providing appropriate GeoJson and other associated data based on tenantId or lat/long etc.
/tenant/_search should be added as the search endpoint. This method tries to resolve a given lat, long to a corresponding tenant, provided there exists a mapping between the reverse geocoded city to tenant.
The MDMS Tenant boundary master file should be loaded in MDMS service.
Title
Link
Local setup
Link
/boundarys/_search
/geography/_search
/tenant/_search
Please refer to the Swagger API contract for egov-location service to understand the structure of APIs and to have a visualisation of all internal APIs.
User service is responsible for user data management and providing functionality to login and logout into Digit system
Before you proceed with the configuration, make sure the following pre-requisites are met -
Java 8
Kafka server is up and running
Encryption and MDMS services are running
PSQL server is running and database
Redis is running
Store, update and search user data
Provide authentication
Provide login, logout functionality into DIGIT platform
Store user data PIIs in encrypted form
Setup latest version of egov-enc-service and egov-mdms- service
Deploy the latest version of egov-user service
Add Role-Action mapping for API’s
Following application properties file in user service are configurable.
Property
Value
Remarks
egov.user.search.default.size
10
default search record number limit
citizen.login.password.otp.enabled
true
whether citizen login otp based
employee.login.password.otp.enabled
false
whether employee login otp based
citizen.login.password.otp.fixed.value
123456
fixed otp for citizen
citizen.login.password.otp.fixed.enabled
false
allow fixed otp for citizen
otp.validation.register.mandatory
true
whether otp compulsory for registration
access.token.validity.in.minutes
10080
validity time of access token
refresh.token.validity.in.minutes
20160
validity time of refresh token
default.password.expiry.in.days
90
expiry date of a password
account.unlock.cool.down.period.minutes
60
unlock time
max.invalid.login.attempts.period.minutes
30
window size for counting attempts for lock
max.invalid.login.attempts
5
max failed login attempts before account is locked
egov.state.level.tenant.id
pb
User data management and functionality to login and logout into Digit system using OTP and password.
Providing following functionality to citizen and employee type users
Employee:
User registration
Search user
Update user details
Forgot password
Change password
User role mapping(Single ULB to multiple roles)
Enable employee to login into DIGIT system based on a password.
Citizen:
Create user
Update user
Search user
User registration using OTP
OTP based login
To integrate, host of egov-user should be overwritten in the helm chart.
Use /citizen/_create and /users/_createnovalidate endpoints for creating users into the system
Use /v1/_search and /_search endpoints to search users in the system depending on various search parameters
Use /profile/_update for partial update and /users/_updatenovalidate for update
Use /password/nologin/_update for otp based password reset and /password/_update for logged in user password reset
Use /user/oauth/token for generating token, /_logoutfor logout and /_details for getting user information from his token
Link
/citizen/_create
/users/_createnovalidate
/_search
/v1/_search
/_details
/users/_updatenovalidate
/profile/_update
/password/_update
/password/nologin/_update
/_logout
/user/oauth/token
The objective of PDF generation service is to bulk generate pdf as per requirement.
Before you proceed with the documentation, make sure the following pre-requisites are met -
Install npm.
Kafka server is up and running.
egov-persister service is running and has pdf generation persister config path added in it.
PSQL server is running and the database is created to store filestore id and job id of generated pdf.
Provide a common framework to generate PDF.
Provide flexibility to customise the PDF as per the requirement.
Provide functionality to add an image, Qr Code in PDF.
Provide functionality to generate pdf in bulk.
Provide functionality to specify a maximum number of records to be written in one PDF.
Create data config and format config for a PDF according to product requirement.
Add data config and format config files in PDF configuration
Add the file path of data and format config in the environment yml file
Deploy the latest version of pdf-service in a particular environment.
The PDF configuration can be used by any module which needs to show particular information in PDF format that can be print/downloaded by the user.
Functionality to generate PDFs in bulk.
Avoid regeneration.
Support QR codes and Images.
Functionality to specify the maximum number of records to be written in one PDF.
Uploading generated PDF to filestore and return filestore id for easy access.
To download and print the required PDF _create API has to be called with the required key (For Integration with UI, please refer to the links in Reference Docs)
(Note: All the API’s are in the same postman collection, therefore, the same link is added in each row)
Workflows are a series of steps that moves a process from one state to another state by actions performed by different kind of Actors - Humans, Machines, Time based events etc. to achieve a goal like onboarding an employee, or approve an application or grant a resource etc. The egov-workflow-v2 is a workflow engine which helps in performing these operations seamlessly using a predefined configuration.
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 workflow persister config path added in it
PSQL server is running and database is created to store workflow configuration and data
Always allow anyone with a role in the workflow state machine to view the workflow instances and comment on it
On the creation of workflow, it will appear in the inbox of all employees that have roles that can perform any state transitioning actions in this state.
Once an instance is marked to an individual employee it will appear only in that employee's inbox although point 1 will still hold true and all others participating in the workflow can still search it and act if they have necessary action available to them
If the instance is marked to a person who cannot perform any state transitioning action, they can still comment/upload and mark to anyone else.
Overall SLA: SLA for the complete processing of the application/Entity
State-level SLA: SLA for a particular state in the workflow
Deploy the latest version of egov-workflow-v2 service
Add businessService persister yaml path in persister configuration
Add Role-Action mapping for BusinessService API’s
Overwrite the egov.wf.statelevel flag ( true for state level and false for tenant level)
Create businessService (workflow configuration) according to product requirements
Add Role-Action mapping for /processInstance/_search API
Add workflow persister yaml path in persister configuration
For Configuration details please refer to the links in Reference Docs
The workflow configuration can be used by any module which performs a sequence of operations on an application/Entity. It can be used to simulate and track processes in organisations to make it more efficient too and increase accountability.
Role-based workflow
An easy way of writing rule
File movement within workflow roles
To integrate, host of egov-workflow-v2 should be overwritten in helm chart
/process/_search should be added as the search endpoint for searching workflow process Instance object.
/process/_transition should be added to perform an action on an application. (It’s for internal use in modules and should not be added in Role-Action mapping)
The workflow configuration can be fetched by calling _search API to check if data can be updated or not in the current state
(Note: All the API’s are in the same postman collection, therefore, the same link is added in each row)
One of the applications in the Digit core group of services aims to reduce the time spent by developers on writing codes to store and fetch master data ( primary data needed for module functionality ) which doesn’t have any business logic associated with them. Instead of writing APIs, creating tables in every different service to store and retrieve data that is seldom changed MDMS service keeps them at a single location for all modules and provides data on will with the help of no more than three lines of configuration.
Prior Knowledge of Java/J2EE.
Prior Knowledge of Spring Boot.
Prior Knowledge of REST APIs and related concepts like path parameters, headers, JSON etc.
Prior knowledge of Git.
Advanced knowledge on how to operate JSON data would be an added advantage to understand the service.
Adds master data for usage without the need to create master data APIs in every module.
Reads data from GIT directly with no dependency on any database services.
Deploy the latest version of Mdms-service
Add conf path for the file location
Add master config JSON path
The MDMS service provides ease of access to master data for any service.
No time spent writing repetitive codes with no business logic.
To integrate, host of egov-mdms-service should be overwritten in helm chart
egov-mdms-service/v1/_search should be added as the search endpoint for searching master data.
Mdms client from eGov snapshots should be added as mvn entity in pom.xml for ease of access since it provides mdms request pojos.
All content on this page by eGov Foundation is licensed under a Creative Commons Attribution 4.0 International License.
All content on this page by eGov Foundation is licensed under a Creative Commons Attribution 4.0 International License.
PDFMake: ( ):- for generating PDFs
Mustache.js: ( ):- as templating engine to populate format as defined in format config, from request json based on mappings defined in data config
For Configuration details please refer to
All content on this page by is licensed under a .
All content on this page by is licensed under a .
All content on this page by is licensed under a .
Environment Variables
Description
egov.mdms.conf.path
The default value of folder where master data files are stored
masters.config.url
The default value of the file URL which contains master-config values
egov-mdms-service/v1/_search
Environment Variables
Description
MAX_NUMBER_PAGES
Maximum number of records to be written in one PDF
DATE_TIMEZONE
Date timezone which will be used to convert epoch timestamp into date (DD/MM/YYYY)
DEFAULT_LOCALISATION_LOCALE
Default value of localisation locale
DEFAULT_LOCALISATION_TENANT
Default value of localisation tenant
DATA_CONFIG_URLS
File path/URL'S of data config
FORMAT_CONFIG_URLS
File path/URL'S of format config
Title
Link
Customizing PDF Receipts & Certificates
Steps for Integration of PDF in UI for download and print PDF
API Swagger Documentation
Link
pdf-service/v1/_create
pdf-service/v1/_createnosave
pdf-service/v1/_search
Environment Variables
Description
egov.wf.default.offset
The default value of offset in search
egov.wf.default.limit
The default value of limit in search
egov.wf.max.limit
The maximum number of records that are returned in search response
egov.wf.inbox.assignedonly
Boolean flag if set to true default search will return records assigned to the user only, if false it will return all the records based on the user’s role. (default search is the search call when no query params are sent and based on the RequestInfo of the call, records are returned, it’s used to show applications in employee inbox)
egov.wf.statelevel
Boolean flag set to true if a state-level workflow is required
Title
Link
Configuring Workflows For New Product/Entity
Setting Up Workflows
API Swagger Documentation
Migration to Workflow 2.0
Title
Link
/businessservice/_create
/businessservice/_update
/businessservice/_search
/process/_transition
/process/_search
Title
Link
egov-mdms sample data
master-config.json
The URL shortening service is used to shorten long URLs. There may be requirement when we want to avoid sending very long urls to the user via SMS, Whatsapp etc, this service compresses the URL.
Before you proceed with the configuration, make sure the following pre-requisites are met -
Prior Knowledge of Java/J2EE
Prior Knowledge of SpringBoot
Prior Knowledge of REST APIs and related concepts like path parameters, headers, JSON etc.
Compress long URLs.
Converted short URLs contains id, which is used by this service to identify and get longer URLs.
Environment Variable
Description
host.name
Host name to append in short URL
db.persistance.enabled
The boolean flag to store the short URL in database when flag is set as TRUE.
Deploy latest version of URL Shortening service
Receive long urls and converts them to shorter urls. Shortened urls contains urls to endpoint mentioned next. When user clicks on shortened URL, user is redirected to long URL.
This shortened urls contains path to this endpoint. The service uses id used in last endpoint to get long URL. As response the user is redirected to long URL.
Title
Link
Swagger API Contract
Local Setup
Indexer service runs as a separate service. This service is designed to perform all the indexing tasks of the digit platform. The service reads records posted on specific kafka topics and picks the corresponding index configuration from the yaml file provided by the respective module. Objective of Indexer service are listed as below.
To provide a one stop framework for indexing the data to elasticsearch.
To create provision for indexing live data, reindexing from one index to the other and indexing legacy data from the datastore.
Before you proceed with the configuration, make sure the following pre-requisites are met -
Prior Knowledge of Java/J2EE
Prior Knowledge of SpringBoot
Prior Knowledge of Elasticsearch
Prior Knowledge of REST APIs and related concepts like path parameters, headers, JSON etc.
Prior Knowledge of Kafka and related concepts like Producer, Consumer, Topic etc.
Performs three major tasks namely: LiveIndex, Reindex and LegacyIndex.
LiveIndex: Task of indexing the live transaction data on the platform. This keeps the es data in sync with the db.
Reindex: Task of indexing data from one index to the other. ES already provides this feature, indexer does the same but with data transformation.
LegacyIndex: Task of indexing legacy data from the tables to ES.
Provides flexibility to index the entire object, a part of the object or an entirely different custom object all using one input json from modules.
Provides features for customizing index json by field mapping, field masking, data enrichment through external APIs and data denormalization using MDMS.
One stop shop for all the es index requirements with easy-to-write and easy-to-maintain configuration files.
Designed as a consumer to save API overhead. The consumer configs are written from scratch to have complete control over the consumer behaviour.
Step 1: Write configuration as per your requirement. Structure of the config file is explained later in the same doc.
Step 2: Check-in the config file to a remote location preferably github, currently we check the files into this folder https://github.com/egovernments/configs/tree/DEV/egov-indexer -for dev
Step 3: Provide the absolute path of the checked-in file to DevOps, to add it to the file-read path of egov-indexer. The file will be added to egov-indexer's environment manifest file for it to be read at start-up of the application.
Step 4: Run the egov-indexer app, Since it is a consumer, it starts listening to the configured topics and indexes the data.
For Indexer Configuration, please refer to the document in Reference Docs table given below.
a) POST /{key}/_index
Receive data and index. There should be a mapping with topic as {key} in index config files.
b) POST /_reindex
This is used to migrate data from one index to another index
c) POST /_legacyindex
This is to run LegacyIndex job to index data from DB. In the request body the URL of the service which would be called by indexer service to pick data, must be mentioned.
In legacy indexing and for collection-service record LiveIndex kafka-connect is used to do part of pushing record to elastic search. For more details please refer to document mentioned in document list.
eGov Payment Gateway acts as a liaison between eGov apps and external payment gateways facilitating payments, reconciliation of payments and lookup of transactions' status'.
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 pg service persister config path added in it
PSQL server is running and the database is created to store transaction data.
Create or initiate a transaction, to make a payment against a bill.
Make payment for multiple bill details [multi module] for a single consumer code at once.
Transaction to be initiated with a call to the transaction/_create API, various validations are carried out to ensure the sanctity of the request.
The response includes a generated transaction id and a redirect URL to the payment gateway itself.
Various validations are carried out to verify the authenticity of the request and the status is updated accordingly. If the transaction is successful, a receipt is generated for the same.
Reconciliation is carried out by two jobs scheduled via a Quartz clustered scheduler.
Early Reconciliation job is set to run every 15 minutes [configurable via app properties], and is aimed at reconciling transactions which were created 15 - 30 minutes ago and are in PENDING state.
Daily Reconciliation job is set to run once per day and is aimed at reconciling all transactions that are in PENDING state, except for ones which were created 30 minutes ago.
Axis, Phonepe and Paytm payment gateways are implemented.
Additional gateways can be added by implementing the Gateway interface. No changes required to the core packages.
Following properties in the application.properties file in egov-pg-service has to be added and set to default value after integrating with the new payment gateway. In the below table properties for AXIS bank, payment gateway is shown the same relevant property needs to be added for other payment gateways.
Property
Remarks
axis.active
Bollean lag to set the payment gateway active/inactive
axis.currency
Currency representation for merchant, default(INR)
axis.merchant.id
Payment merchant Id
axis.merchant.secret.key
Secret key for payment merchant
axis.merchant.user
User name to access the payment merchant for transaction
axis.merchant.pwd
Password of the user tp access payment merchant
axis.merchant.access.code
Access code
axis.merchant.vpc.command.pay
Pay command
axis.merchant.vpc.command.status
commans status
axis.url.debit
Url for making payment
axis.url.status
URL to get the status of the transaction
Deploy the latest version of egov-pg-service
Add pg service persister yaml path in persister configuration
The egov-pg-service acts as communication/contact between eGov apps and external payment gateways.
Record of every transaction against a bill.
Record of payment for multiple bill details for a single consumer code at once.
To integrate, host of egov-pg-service should be overwritten in helm chart
/pg-service/transaction/v1/_create should be added in the module to initiates a new payment transaction, on successful validation
/pg-service/transaction/v1/_update should be added as the update endpoint to updates an existing payment transaction. This endpoint is issued only by payment gateways to update the status of payments. It verifies the authenticity of the request with the payment gateway and forward all query params received from a payment gateway
/pg-service/transaction/v1/_search should be added as the search endpoint for retrieving the current status of a payment in our system.
Title
Link
Swagger API Contract
Title
Link
/pg-service/transaction/v1/_create
/pg-service/transaction/v1/_update
/pg-service/transaction/v1/_search
/pg-service/gateway/v1/_search
(Note: All the API’s are in the same postman collection, therefore, the same link is added in each row)
This document aims to facilitate communication between the software developers and whoever is localising the chatbot messages. The goal is to make it clear and as unambiguous as possible.
The Google Sheet containing all the messages with the codes is:
The project is organised such that all the messages are contained within the files present inside the /machine directory. /service directory, which is present inside it, also includes files that could contain localization messages.
Guidelines to be followed by developers
(According to the standard pattern followed in the project, all the localization messages will be present near the end of the file in a JavaScript object named “messages”.)
Developers will be the ones first filling up the sheet with codes (and the English version of the messages). Below are the guidelines to be followed when writing the codes in the sheet:
The standard separator to be used is .(dot)
The first part is the filename—Eg: “pgr.”, when the filename is pgr.js.
Use “service.” as a prefix when the file is present inside the /service directory.
In the /service directory, filenames are like egov-pgr.js
For localization messages contained in those files, instead of writing “egov-pgr” just write “pgr”
So the prefix for such files would be “service.pgr.”
All the message bundles would be present in the “messages” object near the end of the file. They have been organized in a pattern in the JS object like fileComplaint.complaintType2Step.category.question
The corresponding localization code for such a message bundle in the sheet would be “pgr.fileComplaint.complaintType2Step.category.question”, where the first “pgr.” is added as the prefix for the file name.
Once the localization codes have been written correctly (and the English version of the messages) in the sheet, it should be easy to add the new message in the corresponding new column. Some guidelines to follow when adding new messages:
The parameter names are written within (double curly brackets)
The content inside these curly brackets should be written in English even when writing messages for any new language
Whenever any user logs an authorization token and a refresh token is generated for him. Using the auth token the client can make rest API calls to the server to fetch data. The auth token has an expiry period. Once the auth token is expired it cannot be used to make API calls. The client will have to generate a new authorization token. This is done by authenticating the refresh token with the server which then generates and sends new authorization token to the client. The refresh token avoids the need for the client to again login whenever Auth token expires.
Refresh token also has an expiry period and once it gets expired it cannot be used to generate new authorization token and the user will have to login again to get a new pair of authorization token and refresh token. Generally, the duration before the expiry of the refresh token is much longer compared to that of auth token. If the user logs out of the account both Auth token and the refresh token will become invalid.
Param
Description
access.token.validity.in.minutes
Duration in minutes for which the authorization token is valid
refresh.token.validity.in.minutes
Duration in minutes for which the refresh token is valid
API
Description
/user/oauth/token
Used to start the session by generating Auth token and refresh token from username and password using grant_type as password. The same API can be used to generate new auth token from refresh token by using grant_type as refresh_token and sending the refresh token with key refresh_token
/user/_logout
This API is used to end the session. The access token and refresh token will become invalid once this API is called. Auth token is sent as param in the API call
`
Goal: To onboard developers onto the XState-Chatbot code base so that they can modify existing flows or create new ones.
This document sticks to explaining the chatbot's core features and does not dive into the use cases implemented by the chatbot. There is another document dedicated to it.
NodeJS
PostgreSQL
Kafka(optional)
Build a chat flow to facilitate a user to interact with rainmaker modules
Link a chat flow with backend services
Deploy the latest version of xstate-chatbot
Configure /xstate-chatbot to be a whitelisted open endpoint in zuul
Add to the egov-indexer to index all the telemetry messages
This chatbot does not have any Natural Language Processing component. In the future, we can extend the chatbot to add such features.
XState is a JavaScript implementation of StateCharts. There is detailed documentation available to study XState. Few of the concepts of XState that are used in Chatbot are listed below. Basic knowledge of these concepts is necessary. It can also be learned while going through the chat flow implementation of pilot use cases of PGR and Bills.
Actions
onEntry
Few tips about using XState. These have been followed throughout the pilot chat flows.
If we want to move to any state which is not at the same hierarchical level, then we should assign it a unique id value. If it has an id value, we can address it using the # qualifier in the target attribute.
As id should be unique, please make sure there aren’t multiple states with the same id value. If there is a duplicate, the machine won’t function as expected.
Any actions(like onEntry) should be surrounded by assign.
This would include almost all functions except the guard condition code snippets.
All the interactions with the user - sending a message to the user and processing an incoming message from the user is coded as a state in the State Machine. It would be a nice start to test any chat flow with the supplementary react-app provided for the developers to execute the state machine locally. (Please follow the guidelines in the README of the react-app.)
We have followed few standard patterns to code any chat interaction. Please try to follow these patterns to code any new chat flow. These patterns are explained below. You can also study those by browsing through the code of the pilot use cases of PGR and Bills.
The chat states would only include dialog-specific code. Any code related to backend service should be written as a part of a separate …-service.js file.
Any code that doesn’t include any asynchronous API call can be written as a part of the onEntry function or action.
If the function needs to make an API call, that would have to be written with the invoke-on Done pattern. The asynchronous function should be written as a part of the service file. The consolidated data returned by it can be processed in the state of the dialog file.
Helper functions are written indialog.js
file. It is advised to use those functions as much as possible rather than writing any custom logic in dialog files.
Apart from the chat flow and its backend service API calls, few other components are present in the project. These components do NOT need to be modified to code any new chat flow or changing an existing chat flow. These components with a short description for each are listed below:
Session Manager: It manages sessions of all the users on a server. It will store the user’s state in a datastore, update it, and read it when any new message is received on the server. Based on the state of the user, it will create a state machine and send the incoming message event to the state machine. It sanctifies the state (any sensitive data like the name and mobile number of a user are removed) before storing the state to the datastore.
Repository: It is the datastore where the states of the users get stored. To reduce dependency, an in-memory repository is also provided, which can be used by configuring an environment variable. So to run the chatbot service, PostgreSQL isn’t a hard dependency, but it is advisable to use the PostgreSQL repo provider.
Channel Provider: There can be many different WhatsApp Providers. Any one of the providers will be configured to be used. A separate console
WhatsApp Provider is present for the developer to test the chatbot server locally. Postman collection to mimic receiving messages from a user to the server is present in the project directory.
Localization: Every message to be sent to the user is stored within the chatbot. Localization service is not being used. These messages are present near the bottom of the dialog files. A separate localization-service.js is provided to get the messages for the localization codes for the messages that are not owned by the chatbot. For example, the PGR complaint types data is under the ownership of the PGR module, and the messages for such can be fetched from the egov-localization-service using the functions provided in the localization-service.js.
Service Provider: To ease the initial dialog development, instead of the coding API calls to the backend services, we can configure the chat flow to use a dummy service. This can be configured using an environment variable and modifying the service-loader.js
file.
Telemetry: Chatbot logs telemetry events to a kafka topic. (Any sensitive data will get masked before indexing the events onto ElasticSearch by egov-indexer.) Following events get logged:
Incoming message
Outgoing message
Transition of state
is a revamped version of the , which provides functionality to the user to access PGR module services like file complaint, track complaint, notifications from whats app, It allows the user to view receipts and pay the bills for Property, Trade Licence, FireNOC, Water and Sewerage and BPA service module.
File PGR complaint
Track PGR complaint
Support images when filing complaints
Notifications to citizen when an employee performs any action on the complaint
Allow user to search and pay bills of different modules.
Allow user to search and view receipts of different modules.
Allow user to change the language of their choice to have a better experience.
Put user interactions on an elastic search for Telemetry.
XState chatbot can be integrated with any other module to improve the ease of search and view bills/past payment receipts and to improve speed and convenience for bill payment. It can be integrated with the PGR module for easiness of creation and tracking of the complaint.
Increase in convenience and ease of making the bill payment.
Increase in no. of users opting for online payment.
Improvement in demand collection efficiency
Creating an additional channel for payment.
Remove dependency on mobile/web app or counter.
Whatsapp provider is a third-party service that works in the middle of a user's WhatsApp client and XState-Chatbot server. All messages coming/going to/from user pass through WhatsApp provider. Chatbot calls WhatsApp provider to send messages to the user. When a user responds with any WhatsApp message the WhatsApp provider calls Chatbot service’s configured endpoint with details ex:- user sent message, sender’s number etc.
If any new WhatsApp provider is to be used with a chatbot, code must be written to convert the provider’s incoming messages to the format that the chatbot understands and also final output from the chatbot should be converted to WhatsApp provider’s API request format.
Currently, the XState-Chatbot service is using ValueFirst as the WhatsApp Provider. This will require provider-specific environment variable to be configured. If the provider changes then, all these environment variable will also change. Few of those environment variables are stored as secrets, so these values need to be configured in env-secrets.yaml.
As this is a revamped version of the chatbot service, all of the secrets should already be present. There is no need to create new secrets.
Configuration of PGR version in chatbot
pgrVersion
pgrUpdateTopic
To configure PGR v2 in XState chatbot then pgrVersion should be ‘v2' and pgrUpdateTopic should be 'update-pgr-request’.
Adding Information Image in PGR complaint creation
To configure the filestoreid for informational image follow the steps mention below
Configuration of Compliant status template messages
For Compliant status update notifications to citizen when an employee performs any action on the complaint.
For example:
a) if supportedLocales: process.env.SUPPORTED_LOCALES || 'en_IN,hi_IN'
then valuefirst-notification-resolved-templateid: "12345,6789"
b) if supportedLocales: process.env.SUPPORTED_LOCALES || 'hi_IN,en_IN'
then valuefirst-notification-resolved-templateid: "6789,12345"
(Note: Both the list should not be empty, it must contain at least one element)
Configuration of module for Bill payment and Receipt search
For example:
If bill-supported-modules: "WS, PT, TL
"
then Water and Sewerage, Property, Trade license module would appear for bill payment and
receipt search.
Configuration of Xstate-Chatbot localisation message
XState-Chatbot does not have any MDMS data, nor does it store any messages in localization-service. If any message needs to be modified, the changes will have to be made in the source code, then build the new docker image and deploy it. For Configuration details of the XState-chatbot localisation message please refer to the links in Reference Docs.
All content on this page by eGov Foundation is licensed under a Creative Commons Attribution 4.0 International License.
All content on this page by eGov Foundation is licensed under a Creative Commons Attribution 4.0 International License.
All content on this page by eGov Foundation is licensed under a Creative Commons Attribution 4.0 International License.
All content on this page by eGov Foundation is licensed under a Creative Commons Attribution 4.0 International License.
Other configuration details are mentioned as part of the .
This chatbot solves the basic form filling aspect of a chat flow. By collecting the information from the user, an API call can be made to the rainmaker backend services to fulfill what the user wants to do. It uses the concept of (similar to State Machines) to maintain the state of the user in a chat flow and store the information provided by the user. is a JavaScript implementation of StateCharts. All chat flows are coded inside the XState framework.
All content on this page by is licensed under a .
The integration of PGR with a chatbot can be enabled and disabled by making changes in this . By exporting the respective PGR service file, the PGR service feature can be sable and vice versa.
To configure the PGR module to use in Xstate-chatbot - the below variable values need to change in the as per the requirement.
Download this
Upload the image into filestore server. Use the upload file API from this postman collection(
Mention the filestore id in the environment file.
Xstate chatbot is maintaining the template id of each message which gets triggered on the respective status or action performed on the complaint. The template ids are maintained in the . For any new notification, its template id has to mention in the above file.
Each notification in a different language will have different template ids. For example, the complaint resolve notification in English will have template-id as ‘12345' and the same notification in Hindi will have template-id as ‘6789’. The order of mentioning the template id must be the same as the order of the supported locale mentioned in .
The integration of the Bill payment and receipt search feature with a chatbot can be enabled and disabled by making changes in this . By exporting the respective bill service and receipt service file, the payment and receipt search feature can be enabled and vice versa.
To configure the list of modules to appear as an option for payment and receipt, Add the module business service code in the list present in the file.
Also add the message bundle, validation and service code for locality searcher in and file.
The table below contains the details about some environment variables use in XState-Chatbot service which is present in this :
Add this in the and mention the filename in the respective .
Environment Variable
Description
WHATSAPP_PROVIDER
The provider through which WhatsApp messages are sent & received. An adapter for ValueFirst is written. If there is any new provider a separate adapter will have to be implemented.
A default console
adapter is provided for developers to test the chatbot locally.
REPO_PROVIDER
The database used to store the chat state. Currently, an adapter for PostgreSQL is provided.
An InMemory
adapter is provided to test the chatbot locally
SERVICE_PROVIDER
If it’s value is configured to be eGov, it will call the backend rainmaker services. If the value is configured as Dummy, dummy data would be used rather than fetching data from APIs.
Dummy option is provided for initial dialog development, and is only to be used locally.
SUPPORTED_LOCALES
A list of comma-separated locales supported by the chatbot.
Environment Variables
Description
WHATSAPP_BUSINESS_NUMBER
The mobile number to be used on the server
VALUEFIRST_USERNAME
Username for a configured number for sending messages to the user through WhatsApp provider API calls
VALUEFIRST_PASSWORD
Password for a configured number for sending messages to the user through WhatsApp provider API calls
GOOGLE_MAPS_API_KEY
Maps API key to access geocoding feature
ROOT_TENANTID
Contains state-level tenantid value
SUPPORTED_LOCALES
This variable contains the list of supported language in the chatbot. If there is a need to add a new language in the chatbot, then its respective locale has to be added to this list.
PGR_VERSION
Contains PGR version value to use (i.e v1 or v2)
PGR_UPDATE_TOPIC
Depends on the PGR version respective PGR update kafka topic name should mention here. Example: If PGR_VERSION: 'v2' then PGR_UPDATE_TOPIC: 'update-pgr-request'
BILL_SEARCH_LIMIT
Limit for showing a maximum number of bills on search.
RECEIPT_SEARCH_LIMIT
Limit for showing a maximum number of receipts on search.
COMPLAINT_SEARCH_LIMIT
Limit for showing a maximum number of complaints on search.
BILL_SUPPORTED_MODULES
Contains the list of modules to be used for bill payment and receipts search.
INFORMATION_IMAGE_FILESTORE_ID
Contains the filestoreid of informational image, which shows how to share the user current location.
USER_SERVICE_HARDCODED_PASSWORD
This variable contains the fixed value of login password and OTP. This value has to be configured in env-secrets.yaml.
Title
Link
Chatbot Message Localisation
Title
Link
/xstate-chatbot/message