This repository contains a minimal implementation for use CouchDb as configuration provider for Microsoft.Extensions.Configuration framework.
Currently I didn't published a nuget package. If you want to use it, add it to your project as a submodule and compile it together with your code.
See the code bellow to use it on your code:
namespace MyProject
{
using Microsoft.Extensions.Configuration.CouchDb;
public static class Program
{
public static void Main()
{
var configuration = new ConfigurationBuilder();
// the code bellow connect to host and port, read all collections from database from third parameter and listen for changes
configuration.AddCouchDb("your_ip_address", 5984, "configuration", true);
configuration.AddCouchDb("your_ip_address", 5984, "redirections", true);
var cfg = configuration.Build();
// if you want to listen for changes, set the last parameter as true and connect to the token
var section = cfg.GetSection("configuration");
ChangeToken.OnChange(section.GetReloadToken, (IConfiguration state)=>
{
// here we should get the configuration already reloaded.
}), section);
// Be aware that the reload is called whenever the document is changed in couchdb.
// Currently there's no comparison for old/new values.
/* suppose you have in database configuration a document in following format:
{
"_id": "some weird id",
"_rev": "58-4fdde36260952fdc92dc667145af115a",
"endpoints":{
"value1": "a",
"value2" : { "subkey": "1" }
},
"currentValue": "weird value"
}*/
var currentValue = cfg.GetSection("configuration")["currentValue"];
Console.WriteLine(currentValue); // prints weird value
var subsection = cfg.GetSection("configuration").GetSection("endpoints").GetSection("value2");
Console.WriteLine(subsection["subkey"]); // prints 1
}
}