Can't connection DB use ktor application - postgresql

Question

I try start ktor application with postgresql database. For it i used docker compose. My docker-compose.yml.
version: '3.0'
services:
ktor-sample:
build: ./
command: ./ktor-sample
ports:
- "8080:8080"
depends_on:
- db
db:
restart: unless-stopped
image: postgres:9.6.10-alpine
volumes:
- ./test:/var/lib/postgresql/data
ports:
- "5433:5433"
environment:
POSTGRES_USER: postgres
POSTGRES_PASSWORD:
POSTGRES_DB: AutoHistory
I every one receive error:
WARN Exposed - Transaction attempt #2 failed: Connection to localhost:5433 refused.
Check that the hostname and port are correct and that the postmaster is accepting
TCP/IP connections.. Statement(s): null
ktor-sample_1 | org.postgresql.util.PSQLException: Connection to localhost:5433
refused. Check that the hostname and port are correct and that the postmaster is
accepting TCP/IP connections.
This database is created and can connection to it.

Answer 1

As for me I do next I create an object for initializing of db
it can look like this
object DbFactory {
fun init() {
val pool = hikari()
val db = Database.connect(pool)
transaction(db) {
SchemaUtils.create(Creators, Visitors, Places, Roles, UserRoles, Users)
}
}
private fun hikari(): HikariDataSource {
val hikariConfig = HikariConfig("db.properties")
return HikariDataSource(hikariConfig)
}
}
and in Application.kt, on the first place initialize your db
fun main() {
embeddedServer(Netty, port = 8080, host = "0.0.0.0") {
DbFactory.init()
...
the file which is describing your data should live in root and be called db.properties look something like
jdbcUrl=jdbc:postgresql://localhost:5433/AutoHistory
dataSource.driverClass = org.postresql.Driver
dataSource.driver=postgresql
dataSource.database= AutoHistory
dataSource.user= postgres
dataSource.password=
I have no such rows in docker-compose.yml
ktor-sample:
build: ./
command: ./ktor-sample
ports:
- "8080:8080"
depends_on:
- db
and do start my app manually but anyway I think it should help you