How to integrate PostgreSQL with Corda 3.0 or with Corda 4.0? - postgresql

Question

I tried to configure PostgreSQL as node's database in Corda 3.0 and in Corda 4.0.
I have added following things in build.gradle file. (Testdb1 is Database name. I have tried with postgres also)
node{
...
// this part i have added
extraConfig = [
jarDirs: ['path'],
'dataSourceProperties': [
'dataSourceClassName': 'org.postgresql.ds.PGSimpleDataSource',
'"dataSource.url"' : 'jdbc:postgresql://127.0.0.1:5432/Testdb1',
'"dataSource.user"' : 'postgres',
'"dataSource.password"': 'admin#123'
],
'database': [
'transactionIsolationLevel': 'READ_COMMITTED'
]
]
// till here
}
this part in reference.conf file
dataSourceProperties = {
dataSourceClassName = org.postgresql.ds.PGSimpleDataSource
dataSource.url = "jdbc:postgresql://127.0.0.1:5432/Testdb1"
dataSource.user = postgres
dataSource.password = "admin#123"
}
database = {
transactionIsolationLevel = "READ_COMMITTED"
}
jarDirs = ["path"]
I got the follwing Error while deploying the nodes:
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':java-source:deployNodes'.
In node-info-gen.log file it showed the CAPSULE EXCEPTION. Then I updated my JDK to 8u191 but still got the same error.
I have go-through the followings to get the things done. One can get reference from here.
https://docs.corda.net/node-database.html ,
https://github.com/corda/corda/issues/4037 ,
How can the Corda node be extended to work with databases other than H2?

Answer 1

You need to add those properties in node.conf in each of your corda nodes. After you do "deployNodes"
After you add these properties in node.conf file , just run the corda jar . It will automatically start . But before that you need to create the tables (The migration to other DBs is already provided in corda documentation)

Answer 2

I have added following things in .conf file of each node and one referene.conf file. I have given all the privileges for the user postgres which are mentioned in corda documentation.
https://docs.corda.r3.com/node-database.html
(previously I used postgresql-42.2.5.jar file but that didn't work so I used one downgrade version of it postgresql-42.1.4.jar.
one can download jar files from https://jdbc.postgresql.org/download.html )
After deployed Nodes successfully add following things:
dataSourceProperties = {
dataSourceClassName = org.postgresql.ds.PGSimpleDataSource
dataSource.url = "jdbc:postgresql://127.0.0.1:5432/Testdb1"
dataSource.user = postgres
dataSource.password = "admin#123"
}
database = {
transactionIsolationLevel = "READ_COMMITTED"
}
jarDirs = ["path"]
(path = jar file's location) after adding this configuration run file called runnodes.bat