Hangfire.Oracle.Core Implementation
Hangfire.Oracle.Core is based on Hangfire.MySqlStorage(https://github.com/arnoldasgudas/Hangfire.MySqlStorage)
I fixed some bugs and support .net standard 2.0.
Oracle storage implementation of Hangfire - fire-and-forget, delayed and recurring tasks runner for .NET. Scalable and reliable background job runner. Supports multiple servers, CPU and I/O intensive, long-running and short-running jobs.
Some features of Oracle storage implementation is under development!
Installation
Install Oracle
Run the following command in the NuGet Package Manager console to install Hangfire.Oracle.Core:
Install-Package Hangfire.Oracle.Core
Usage
Use one the following ways to initialize OracleStorage
:
- Create new instance of
OracleStorage
with connection string constructor parameter and pass it toConfiguration
withUseStorage
method:
GlobalConfiguration.Configuration.UseStorage(
new OracleStorage(connectionString));
- Alternatively one or more options can be passed as a parameter to
OracleStorage
:
GlobalConfiguration.Configuration.UseStorage(
new OracleStorage(
connectionString,
new OracleStorageOptions
{
TransactionIsolationLevel = IsolationLevel.ReadCommitted,
QueuePollInterval = TimeSpan.FromSeconds(15),
JobExpirationCheckInterval = TimeSpan.FromHours(1),
CountersAggregateInterval = TimeSpan.FromMinutes(5),
PrepareSchemaIfNecessary = true,
DashboardJobListLimit = 50000,
TransactionTimeout = TimeSpan.FromMinutes(1),
SchemaName = "HANGFIRE"
}));
- With version 1.1 you can provide your own connection factory.
GlobalConfiguration.Configuration.UseStorage(
new OracleStorage(
() => new OracleConnection(connectionString),
new OracleStorageOptions
{
SchemaName = "HANGFIRE"
}));
Description of optional parameters:
-
TransactionIsolationLevel
- transaction isolation level. Default is read committed. Didn't test with other options! -
QueuePollInterval
- job queue polling interval. Default is 15 seconds. -
JobExpirationCheckInterval
- job expiration check interval (manages expired records). Default is 1 hour. -
CountersAggregateInterval
- interval to aggregate counter. Default is 5 minutes. -
PrepareSchemaIfNecessary
- if set totrue
, it creates database tables. Default istrue
. -
DashboardJobListLimit
- dashboard job list limit. Default is 50000. -
TransactionTimeout
- transaction timeout. Default is 1 minute. -
SchemaName
- schema name. Default is empty
How to limit number of open connections
Number of opened connections depends on Hangfire worker count. You can limit worker count by setting WorkerCount
property value in BackgroundJobServerOptions
:
app.UseHangfireServer(
new BackgroundJobServerOptions
{
WorkerCount = 1
});
More info: http://hangfire.io/features.html#concurrency-level-control
Dashboard
Hangfire provides a dashboard More info: Hangfire Overview
Build
Please use Visual Studio or any other tool of your choice to build the solution.
Known Issues
Currently Install.sql is not deployed if DB objects are not existing. As a workaround run your scripts in database and give give CRUD grants to the user that is given in connection string.