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GOV.UK Notify Java client

This documentation is for developers interested in using this Java client to integrate their government service with GOV.UK Notify.

Installation

Maven

The notifications-java-client is deployed to Bintray. Add this snippet to your Maven settings.xml file.

Click here to expand for more information. 
<?xml version='1.0' encoding='UTF-8'?>
<settings xsi:schemaLocation='http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd' xmlns='http://maven.apache.org/SETTINGS/1.0.0' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
<profiles>
	<profile>
		<repositories>
			<repository>
				<snapshots>
					<enabled>false</enabled>
				</snapshots>
				<id>bintray-gov-uk-notify-maven</id>
				<name>bintray</name>
				<url>http://dl.bintray.com/gov-uk-notify/maven</url>
			</repository>
		</repositories>
		<pluginRepositories>
			<pluginRepository>
				<snapshots>
					<enabled>false</enabled>
				</snapshots>
				<id>bintray-gov-uk-notify-maven</id>
				<name>bintray-plugins</name>
				<url>http://dl.bintray.com/gov-uk-notify/maven</url>
			</pluginRepository>
		</pluginRepositories>
		<id>bintray</id>
	</profile>
</profiles>
<activeProfiles>
	<activeProfile>bintray</activeProfile>
</activeProfiles>
</settings>

Then add the Maven dependency to your project.

    <dependency>
        <groupId>uk.gov.service.notify</groupId>
        <artifactId>notifications-java-client</artifactId>
        <version>3.4.0-RELEASE</version>
    </dependency>

Gradle

Click here to expand for more information. 
repositories {
    mavenCentral()
    maven {
        url  "http://dl.bintray.com/gov-uk-notify/maven"
    }
}

dependencies {
    compile('uk.gov.service.notify:notifications-java-client:3.4.0-RELEASE')
}

Artifactory or Nexus

Click 'set me up!' on https://bintray.com/gov-uk-notify/maven/notifications-java-client for instructions.

Getting started

import uk.gov.service.notify.NotificationClient;
import uk.gov.service.notify.Notification;
import uk.gov.service.notify.NotificationList;
import uk.gov.service.notify.SendEmailResponse;
import uk.gov.service.notify.SendSmsResponse;

NotificationClient client = new NotificationClient(apiKey);

Generate an API key by signing in to GOV.UK Notify and going to the API integration page.

Send messages

Text message

Method

Click here to expand for more information. 
Map<String, String> personalisation = new HashMap<>();
personalisation.put("name", "Jo");
personalisation.put("reference_number", "13566");
SendSmsResponse response = client.sendSms(templateId, mobileNumber, personalisation, "yourReferenceString");

Response

If the request is successful, the SendSmsResponse is returned from the client. Attributes of the SendSmsResponse are listed below.

Click here to expand for more information. 
    UUID notificationId;
    Optional<String> reference;
    UUID templateId;
    int templateVersion;
    String templateUri;
    String body;
    Optional<String> fromNumber;

Otherwise the client will raise a NotificationClientException:

status code error message
429 429 {
"errors":
[{
"error": "RateLimitError",
"message": "Exceeded rate limit for key type live of 10 requests per 10 seconds"
}]
}
429 429 {
"errors":
[{
"error": "TooManyRequestsError",
"message": "Exceeded send limits (50) for today"
}]
}
400 400 {
"errors":
[{
"error": "BadRequestError",
"message": "Can"t send to this recipient using a team-only API key"
}]
}
400 400 {
"errors":
[{
"error": "BadRequestError",
"message": ""Can"t send to this recipient when service is in trial mode - see https://www.notifications.service.gov.uk/trial-mode""
}]
}

Arguments

Click here to expand for more information.

phoneNumber

The mobile number the SMS notification is sent to.

templateId

The template id is visible on the template page in the application.

personalisation

???

reference

An optional unique identifier for the notification or an identifier for a batch of notifications. reference can be an empty string or null.

Email

Method

Click here to expand for more information. 
HashMap<String, String> personalisation = new HashMap<>();
personalisation.put("name", "Jo");
personalisation.put("reference_number", "13566");
SendEmailResponse response = client.sendEmail(templateId, mobileNumber, personalisation, "yourReferenceString");

Response

If the request is successful, the SendEmailResponse is returned from the client. Attributes of the SendEmailResponse are listed below.

Click here to expand for more information. 
	UUID notificationId;
	Optional<String> reference;
	UUID templateId;
	int templateVersion;
	String templateUri;
	String body;
	String subject;
	Optional<String> fromEmail;

Otherwise the client will raise a NotificationClientException:

error.status_code error.message
429 [{
"error": "RateLimitError",
"message": "Exceeded rate limit for key type TEAM of 10 requests per 10 seconds"
}]
429 [{
"error": "TooManyRequestsError",
"message": "Exceeded send limits (50) for today"
}]
400 [{
"error": "BadRequestError",
"message": "Can"t send to this recipient using a team-only API key"
]}
400 [{
"error": "BadRequestError",
"message": "Can"t send to this recipient when service is in trial mode - see https://www.notifications.service.gov.uk/trial-mode"
}]

Arguments

Click here for more information

emailAddress

The email address the email notification is sent to.

templateId

The template id is visible on the template page in the application.

personalisation

???

reference

An optional unique identifier for the notification or an identifier for a batch of notifications. reference can be an empty string or null.

Letter

Method

The letter must contain:

  • mandatory address fields
  • optional address fields if applicable
  • fields from template
Click here to expand for more information. 
HashMap<String, String> personalisation = new HashMap<>();
personalisation.put("address_line_1", "The Occupier"); // mandatory address field
personalisation.put("address_line_2", "Flat 2"); // mandatory address field
personalisation.put("address_line_3", "123 High Street"); // optional address field
personalisation.put("address_line_4", "Richmond upon Thames"); // optional address field
personalisation.put("address_line_5", "London"); // optional address field
personalisation.put("address_line_6", "Middlesex"); // optional address field
personalisation.put("postcode", "SW14 6BH"); // mandatory address field
personalisation.put("application_id", "1234"); // field from template
personalisation.put("application_date", "2017-01-01"); // field from template

SendLetterResponse response = client.sendLetter(templateId, personalisation, "yourReferenceString");

Response

If the request is successful, the SendLetterResponse is returned from the client. Attributes of the SendLetterResponse are listed below.

Click here to expand for more information. 
	UUID notificationId;
	Optional<String> reference;
	UUID templateId;
	int templateVersion;
	String templateUri;
	String body;
	String subject;

Otherwise the client will raise a NotificationClientException:

error.status_code error.message
429 [{
"error": "RateLimitError",
"message": "Exceeded rate limit for key type live of 10 requests per 20 seconds"
}]
429 [{
"error": "TooManyRequestsError",
"message": "Exceeded send limits (50) for today"
}]
400 [{
"error": "BadRequestError",
"message": "Cannot send letters with a team api key"
]}
400 [{
"error": "BadRequestError",
"message": "Cannot send letters when service is in trial mode - see https://www.notifications.service.gov.uk/trial-mode"
}]
400 [{
"error": "ValidationError",
"message": "personalisation address_line_1 is a required property"
}]

Arguments

Click here to expand for more information.

templateId

The template id is visible on the template page in the application.

personalisation

The letter must contain:

  • mandatory address fields
  • optional address fields if applicable
  • fields from template

If you are sending a letter, you will need to provide the address fields in the format "address_line_#", numbered from 1 to 6, and also the "postcode" field The fields "address_line_1", "address_line_2" and "postcode" are required.

reference

An optional unique identifier for the notification or an identifier for a batch of notifications. reference can be an empty string or null.

Get the status of one message

Method

Click here to expand for more information. 
Notification notification = client.getNotificationById(notificationId);

Response

If successful a notification is returned. Below is a list of attributes in a notification.

Click here to expand for more information. 
    UUID id;
    Optional<String> reference;
    Optional<String> emailAddress;
    Optional<String> phoneNumber;
    Optional<String> line1;
    Optional<String> line2;
    Optional<String> line3;
    Optional<String> line4;
    Optional<String> line5;
    Optional<String> line6;
    Optional<String> postcode;
    String notificationType;
    String status;
    UUID templateId;
    int templateVersion;
    String templateUri;
    String body;
    Optional<String subject;
    DateTime createdAt;
    Optional<DateTime> sentAt;
		Optional<DateTime> completedAt;
    Optional<DateTime> estimatedDelivery;

Otherwise the client will raise a NotificationClientException.

error.status_code error.message
404 [{
"error": "NoResultFound",
"message": "No result found"
}]
400 [{
"error": "ValidationError",
"message": "id is not a valid UUID"
}]

Get the status of all messages

Method

Click here to expand for more information. 
NotificationList notification = client.getNotifications(status, notificationType, reference, olderThanId);

Response

If successful a NotificationList is returned. Below is a list of attributes in aNotificationList.

Click here to expand for more information. 
    List<Notification> notifications;
    String currentPageLink;
    Optional<String> nextPageLink;

Otherwise the client will raise a NotificationClientException.

error.status_code error.message
404 [{
"error": "ValidationError",
"message": "bad status is not one of [created, sending, delivered, pending, failed, technical-failure, temporary-failure, permanent-failure]"
}]
400 [{
"error": "ValidationError",
"message": "Apple is not one of [sms, email, letter]"
}]

Arguments

Click here to expand for more information.
template_type

You can filter by:

  • email
  • sms
  • letter

You can omit this argument to ignore this filter.

status

email

You can filter by:

  • sending - the message is queued to be sent by the provider.
  • delivered - the message was successfully delivered.
  • failed - this will return all failure statuses permanent-failure, temporary-failure and technical-failure.
  • permanent-failure - the provider was unable to deliver message, email does not exist; remove this recipient from your list.
  • temporary-failure - the provider was unable to deliver message, email box was full; you can try to send the message again.
  • technical-failure - Notify had a technical failure; you can try to send the message again.

You can omit this argument to ignore this filter.

text message

You can filter by:

  • sending - the message is queued to be sent by the provider.
  • delivered - the message was successfully delivered.
  • failed - this will return all failure statuses permanent-failure, temporary-failure and technical-failure.
  • permanent-failure - the provider was unable to deliver message, phone number does not exist; remove this recipient from your list.
  • temporary-failure - the provider was unable to deliver message, the phone was turned off; you can try to send the message again.
  • technical-failure - Notify had a technical failure; you can try to send the message again.

You can omit this argument to ignore this filter.

letter

You can filter by:

  • accepted - the letter has been generated.
  • technical-failure - Notify had an unexpected error while sending to our printing provider

You can omit this argument to ignore this filter.

reference

This is the reference you gave at the time of sending the notification. The reference can be a unique identifier for the notification or an identifier for a batch of notifications.

Get a template by ID

Method

This will return the latest version of the template. Use getTemplateVersion to retrieve a specific template version.

Click here to expand for more information. 
Template template = client.getTemplateById(templateId);

Response

Click here to expand for more information. 
    UUID id;
    String templateType;
    DateTime createdAt;
    Optional<DateTime> updatedAt;
    String createdBy;
    int version;
    String body;
    Optional<String> subject;
    Optional<Map<String, Object>> personalisation;

Otherwise the client will raise a NotificationClientException.

error.status_code error.message
404 [{
"error": "NoResultFound",
"message": "No Result Found"
}]
400 [{
"error": "ValidationError",
"message": "id is not a valid UUID"
}]

Arguments

Click here to expand for more information.
templateId

The template id is visible on the template page in the application.

Get a template by ID and version

Method

This will return the template for the given id and version.

Click here to expand for more information. 
Template template = client.getTemplateVersion(templateId, version);

Response

Click here to expand for more information. 
    UUID id;
    String templateType;
    DateTime createdAt;
    Optional<DateTime> updatedAt;
    String createdBy;
    int version;
    String body;
    Optional<String> subject;
    Optional<Map<String, Object>> personalisation;

Otherwise the client will raise a NotificationClientException:

error.status_code error.message
404 [{
"error": "NoResultFound",
"message": "No Result Found"
}]
400 [{
"error": "ValidationError",
"message": "id is not a valid UUID"
}]

Arguments

Click here to expand for more information.
templateId

The template id is visible on the template page in the application.

version

A history of the template is kept. There is a link to See previous versions on the template page in the application.

Get all templates

Method

This will return the latest version for each template for your service.

Click here to expand for more information. 
TemplateList templates = client.getAllTemplates(templateType);

See available template types

Response

Click here to expand for more information. 
    List<Template> templates;

If the response is successful, a TemplateList is returned.

If no templates exist for a template type or there no templates for a service, the templates list will be empty.

Otherwise the client will raise a NotificationClientException:

???

Arguments

Click here to expand for more information.
templateType

You can filter the templates by the following options:

  • email
  • sms
  • letter

You can also pass in an empty string or null to ignore the filter.

Generate a preview template

Method

This will return the contents of a template with the placeholders replaced with the given personalisation.

Click here to expand for more information. 
TemplatePreview templatePreview = client.getTemplatePreview(templateId, personalisation)

Response

Click here to expand for more information. 
    UUID id;
    String templateType;
    int version;
    String body;
    Optional<String> subject;

Otherwise the client will raise a NotificationClientException:

error.status_code error.message
400 [{
"error": "NoResultFound",
"message": "No result found"
}]
400 [{
"error": "ValidationError",
"message": "id is not a valid UUID"
}]

Arguments

Click here to expand for more information.
templateId

The template id is visible on the template page in the application.

personalisation

If a template has placeholders, you need to provide their values. personalisation can be an empty or null in which case no placeholders are provided for the notification.