Informix DB Adapter

1. config.toml Explanation

1.1 Example of configs/config.toml

[gravity]
domain = "default"
host = "0.0.0.0"
port = 4222
pingInterval = 10
maxPingsOutstanding = 3
maxReconnects = -1
accessToken = ""
publishBatchSize = 1000
rateLimit = 0

[service]
port = 8080

[source]
config = "./settings/sources.json"

[store]
enabled = false
path = "./statestore"

1.2 Parameters

Parameter	Description
gravity.domain	Sets the Gravity domain
gravity.host	Sets the Gravity NATS IP address
gravity.port	Sets the Gravity NATS port
gravity.pingInterval	Sets the Gravity ping interval
gravity.maxPingsOutstanding	Sets the maximum outstanding pings
gravity.maxReconnects	Sets the maximum number of reconnections
gravity.accessToken	Sets the Gravity access token (for authentication)
gravity.publishBatchSize	Sets the batch size for events sent to NATS
gravity.rateLimit	Sets the maximum rate (per second) for events sent to NATS (0 = no limit)
service.port	Sets the RESTful API service port
source.config	Path to the source configuration file
store.enabled	Enables persistent volume mounting (required for batch mode)
store.path	Path for mounting the persistent volume (required for batch mode)

INFO

The config.toml settings can also be provided via environment variables. The naming convention is as follows:

GRAVITY_ADAPTER_INFORMIX_[SECTION]_[KEY]

All letters are uppercase, and underscores (_) separate the sections and keys.
Example for gravity.host:

env:
- name: GRAVITY_ADAPTER_INFORMIX_GRAVITY_HOST
  value: 192.168.0.1

---

2. settings.json Explanation

2.1 Example of settings/sources.json

{
   "sources": {
      "informix1": {
         "uri": "/dataInput",
         "disabled": false,
         "batch_mode": true,
         "dbs": {
            "dfedemo_ifx": {
               "tables": {
                  "customer": {
                     "events": {
                        "create": "accountCreated",
                        "update": "accountUpdated",
                        "delete": "accountDeleted"
                     }
                  },
                  "user": {
                     "events": {
                        "create": "userCreated",
                        "update": "userUpdated",
                        "delete": "userDeleted"
                     }
                  }
               }
            },
            "TestDB": {
               "tables": {
                  "account": {
                     "events": {
                        "create": "accountCreated",
                        "update": "accountUpdated",
                        "delete": "accountDeleted"
                     }
                  },
                  "user": {
                     "events": {
                        "create": "userCreated",
                        "update": "userUpdated",
                        "delete": "userDeleted"
                     }
                  }
               }
            }
         }
      },
      "informix2": {
         "uri": "/dataInput2",
         "disabled": false,
         "batch_mode": false,
         "dbs": {
            "dfedemo_ifx": {
               "tables": {
                  "customer": {
                     "events": {
                        "create": "accountCreated",
                        "update": "accountUpdated",
                        "delete": "accountDeleted"
                     }
                  },
                  "user": {
                     "events": {
                        "create": "userCreated",
                        "update": "userUpdated",
                        "delete": "userDeleted"
                     }
                  }
               }
            },
            "TestDB": {
               "tables": {
                  "account": {
                     "events": {
                        "create": "accountCreated",
                        "update": "accountUpdated",
                        "delete": "accountDeleted"
                     }
                  },
                  "user": {
                     "events": {
                        "create": "userCreated",
                        "update": "userUpdated",
                        "delete": "userDeleted"
                     }
                  }
               }
            }
         }
      }
   }
}

2.2 Parameters

Parameter	Description
sources.SOURCE_NAME.uri	Sets the RESTful API URI (e.g., POST http://127.0.0.1:8080/dataInput)
sources.SOURCE_NAME.disabled	Whether to disable this source
sources.SOURCE_NAME.batch_mode	Enables batch mode; if true, persistent volume must be mounted (refer to config.toml)
sources.SOURCE_NAME.dbs.DB_NAME	Sets the Informix database name
sources.SOURCE_NAME.dbs.DB_NAME.tables.TABLE_NAME.event.create	Event name for record creation
sources.SOURCE_NAME.dbs.DB_NAME.tables.TABLE_NAME.event.update	Event name for record updates
sources.SOURCE_NAME.dbs.DB_NAME.tables.TABLE_NAME.event.delete	Event name for record deletion

INFO

The settings.json configuration can also be provided via environment variables.
Environment variable format:

env:
- name: GRAVITY_ADAPTER_INFORMIX_SOURCE_SETTINGS
  value: |
    {
      "sources": {
        "informix1": {
          "uri": "/dataInput",
          "disabled": false,
          "batch_mode": true,
          ...
        }
      }
    }

---

3. Build

To build the adapter image, use the following command:

podman buildx build --platform linux/amd64 -t hb.k8sbridge.com/gravity/gravity-adapter-informix:v0.0.3 -f build/docker/Dockerfile .

---

4. Log Levels

Log levels can be configured using environment variables (default: info).
Available levels: trace, debug, info, error.

env:
- name: GRAVITY_DEBUG
  value: debug