This Docker-Compose example will let you send emails thanks to a REST service provided by a JAVA web application running over a Tomcat server and logging the emails sent on a Postgres database. All three containers deployed separately thanks to Docker-Compose.
To build each container on their folders we use build tag. First folder to search a Dockerfile and build it will be 'server', in that Dockerfile we are going to pull an image with Tomcat and Java JDK ready.
FROM tomcat:8-jre8Then for deploying JAVA application we copy the .war file inside Tomcat's webapps folder.
COPY /webapp/emailboot.war /usr/local/tomcat/webapps/ROOT.warFinally it will build db and smtp containers.
web:
build: server
ports:
- "8080:8080"
links:
- db
- smtp
For the database container we include emailboot.sql initial script.
CREATE TABLE IF NOT EXISTS email_logger (
log_id SERIAL NOT NULL,
log_serial VARCHAR(100) NOT NULL,
log_subject VARCHAR(100) NOT NULL,
log_delivered BOOL NOT NULL DEFAULT 'false',
log_content VARCHAR(2500) NOT NULL,
log_timestamp TIMESTAMP WITHOUT TIME ZONE NOT NULL DEFAULT current_timestamp
) WITH (OIDS =FALSE);
ALTER TABLE email_logger OWNER TO emailboot;It will we run on Postgres start thanks to this command in the Dockerfile.
ADD script/emailboot.sql /docker-entrypoint-initdb.d/To setup properties and ports we are going to use Docker-Compose as is follows:
db:
build: database
restart: always
ports:
- "5432:5432"
environment:
- DEBUG=true
- POSTGRES_USER=testusr
- POSTGRES_PASSWORD=testpwd
Finally we add a simple Postfix SMTP TLS relay docker image with no local authentication enabled (to be run in a secure LAN). To setup properties and ports we are going to use Docker-Compose as is follows:
smtp:
build: smtp
ports:
- "25:25"
environment:
- maildomain=mailboot.net
- smtp_user=user:pwd
- messageSizeLimit=40960000
- mailboxSizeLimit=40960000Original Image: SMTP catatnight/postfix/
Once the docker-compose up command is finished you can test the webapp by accessing:
http://localhost:8080/testIf it was deployed correctly the output should be like this:
EmailBoot Rest Service - Test Succeeded! Once the docker-compose up command is finished you can test the webapp by accessing:
POST rest service
http://localhost:8080/v1/emails
Parameters
"subject" Suject of the email, it will be used on email inbox. Example: Hello I'm here!
"content" Text content, please do not add javascript in this filed, mailboxs validate javascript conent and they will reject the email.
"recipients" List of emails addresses to send the email, if they are more that one separate them with ';'. Example: [email protected]; [email protected];.If the request was process correctly the output should be like this:
{
"code": 202,
"status": "ACCEPTED",
"url": "[POST] http://localhost:8080/v1/emails?subject=Subject%20test&content=Testing%20content%20on%20email&[email protected];",
"message": "Email task was accepted and sent to SMTP",
"data": {
"serial": 1491218659389,
"from": "127.0.0.1",
"mailsList": "[email protected];",
"subject": "Subject test",
"content": "Testing content on email",
"warnings": null,
"malformedDirectEmails": null
}
} Another REST service include in the JAVA app is list all delivered emails
GET rest service
http://localhost:8080/v1/logger?startDate=&endDate=2017-12-01 00:00&onlyDelivered=false
Parameters
"startDate" Initial date to search. Example: 2017-01-01 00:00
"endDate" Final date to search. Example: 2017-12-01 00:00
"onlyDelivered" It will filter the results by only deliverd emails. Example: false *To return all emails on log.This is the expected output:
{
"code": 200,
"status": "OK",
"url": "[GET] http://localhost:8080/v1/logger?startDate=2017-01-01%2000:00&endDate=2017-12-01%2000:00&onlyDelivered=false",
"message": "EmailBoot request response.",
"data": [
{
"serial": "1491359400489",
"subject": "Hello EmailBoot",
"delivered": true,
"content": "Working as a charm!",
"versionDate": "04/03/2017 05:08:51"
}
]
}Search REST services included: By Serial or Subject. Filter by subject will return all the emails that contains the keywords sent.
GET rest services
http://localhost:8080/v1/logger/suject/Docker Test
http://localhost:8080/v1/logger/serial/1491359396709
Parameters
"subject" Text to filter by. Example: Docker Test
"serial" Generated id to filter by. Example: 1491359396709This is the expected output:
{
"code": 200,
"status": "OK",
"url": "[GET] http://localhost:8080/v1/logger/subject/Docker%20Test",
"message": "EmailBoot request response.",
"data": [
{
"serial": "1491359396709",
"subject": "Docker Test",
"delivered": true,
"content": "Email build and send to SMTP",
"versionDate": "04/05/2017 02:29:56"
},
{
"serial": "1491359400486",
"subject": "Docker Test 1",
"delivered": true,
"content": "Email build and send to SMTP",
"versionDate": "04/05/2017 02:30:00"
},
{
"serial": "1491359403198",
"subject": "Docker Test 2",
"delivered": true,
"content": "Email build and send to SMTP",
"versionDate": "04/05/2017 02:30:03"
}
]
}![dependabot[bot] avatar](https://avatars.githubusercontent.com/in/29110?v=4 "dependabot[bot]")
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