How do I configure PostgreSQL with Grails 3.0?

Question

I am using IntelliJ IDEA 15.0.2 as an IDE. I have created a Grails 3.0 application and changed it a bit to configure PostgreSQL.

Here is my dataSource:

dataSource:
pooled: true
jmxExport: true
driverClassName: org.postgresql.Driver
username: postgres
password: root

environments:
development:
    dataSource:
        dbCreate: update
        url: jdbc:postgresql://localhost:5432/trace_db
test:
    dataSource:
        dbCreate: update
        url: jdbc:postgresql://localhost:5432/trace_db
production:
    dataSource:
        dbCreate: update
        url: jdbc:postgresql://localhost:5432/trace_db
        properties:
            jmxEnabled: true
            initialSize: 5
            maxActive: 50
            minIdle: 5
            maxIdle: 25
            maxWait: 10000
            maxAge: 600000
            timeBetweenEvictionRunsMillis: 5000
            minEvictableIdleTimeMillis: 60000
            validationQuery: SELECT 1
            validationQueryTimeout: 3
            validationInterval: 15000
            testOnBorrow: true
            testWhileIdle: true
            testOnReturn: false
            jdbcInterceptors: ConnectionState
            defaultTransactionIsolation: 2 # TRANSACTION_READ_COMMITTED

And in my build.gradle I added runtime "postgresql:postgresql:9.4-1207.jdbc4".

But that gives errors when I run:

ERROR org.apache.tomcat.jdbc.pool.ConnectionPool - Unable to create initial connections of pool.
java.sql.SQLException: org.postgresql.Driver

What have I missed?

Theatheaceous

Do you have the postgresql JDBC driver on the classpath? – Aerometer

Please accept one answer. – Horrified

Answer 1

Data source

dataSource {
    pooled = true
    jmxExport = true
    driverClassName = "org.postgresql.Driver"
    username = "postgres"
    password = "xxx"

Build Config

dependencies {
        // specify dependencies here under either 'build', 'compile', 'runtime', 'test' or 'provided' scopes e.g.
        // runtime 'mysql:mysql-connector-java:5.1.29'
        // runtime 'org.postgresql:postgresql:9.3-1101-jdbc41'
        runtime "org.postgresql:postgresql:9.4.1208.jre7"
        test "org.grails:grails-datastore-test-support:1.0.2-grails-2.4"
    }

Change the jre number according to your db numbe psql version. Hope i helped. Cheers!

Stairwell

You saved a life! Thank you! – Earwig

Answer 2

It looks like you have a tab missing in your configuration

dataSource:
    pooled: true
    jmxExport: true
    driverClassName: org.postgresql.Driver
    username: postgres
    password: root

Everything after datasource needs to be indented.

Roseliaroselin

Answer 3

For those looking for a Grails 4/5 version of this:
implementation "org.postgresql:postgresql:42.3.2"

dataSource:
pooled: true
jmxExport: true
driverClassName: org.postgresql.Driver
username: postgres
password: ''

and finally

url: jdbc:postgresql://localhost:5432/db_name

Silence

Answer 4

I don't know if it was answered but I found that using the application.yml was not giving me access to the datasource configuration, instead it assumed the H2 Driver.

build.gradle (only dependencies block):

compile "org.springframework.boot:spring-boot-starter-logging"
compile "org.springframework.boot:spring-boot-autoconfigure"
compile "org.grails:grails-core"
compile "org.springframework.boot:spring-boot-starter-actuator"
compile "org.springframework.boot:spring-boot-starter-tomcat"
compile "org.grails:grails-dependencies"
compile "org.grails:grails-web-boot"
compile "org.grails.plugins:cache"
compile "org.grails.plugins:scaffolding"
compile "org.grails.plugins:hibernate4"
compile "org.hibernate:hibernate-ehcache"

runtime "postgresql:postgresql:9.4.1208-atlassian-hosted"

compile "org.grails.plugins:spring-security-core:3.0.4"

console "org.grails:grails-console"
profile "org.grails.profiles:web:3.1.6"
runtime "com.bertramlabs.plugins:asset-pipeline-grails:2.8.2"

testCompile "org.grails:grails-plugin-testing"
testCompile "org.grails.plugins:geb"
testRuntime "org.seleniumhq.selenium:selenium-htmlunit-driver:2.47.1"
testRuntime "net.sourceforge.htmlunit:htmlunit:2.18"

Erased everything related to database from application.yml and instead used the application.groovy:

dataSource{
    pooled= true
    jmxExport=true
    driverClassName= 'org.postgresql.Driver'
    username= 'xxxx'
    password= 'xxxx'    }

environments{   
    development{
        dataSource{
            dbCreate= 'create-drop'
            url= "jdbc:postgresql://localhost:5432/xxx"
            logSql= true
            hibernate.default_schema= "template_dm" 
        }
    }
    test{
        dataSource{
            dbCreate= 'create-drop'
            url= "jdbc:postgresql://localhost:5432/xxx"
            logSql= true
            hibernate.default_schema= "template_dm" 
        }
    }
    production{
        dataSource{
            dbCreate= 'create-drop'
            url= "jdbc:postgresql://localhost:5432/xxx"
            logSql= true
            hibernate.default_schema= "template_dm" 
        }
    }

}

Hope this helps everyone with the same issue.

Cheers

Hypertension

Answer 5

Run the Grails application using grails run-app instead of running it through IntelliJ. I had this issue too with MySQL.

I still haven't figured out how to get to work properly through IntelliJ, but at least it works when you use the Grails console!

Note: this is assuming you already have the JDBC driver set up properly. I had mine set up properly for MySQL and kept digging around, thinking that I'd set it up wrong somehow.

Silvana