Is there a way to list all buckets?

[richtera]

I would like to implement a way to iterate through all buckets or buckets matching some kind of expression to be able to clear several of them.

[nathanaschbacher]

There is. The underlying ._bucket namespace on the client backend provides this functionality.

HTTPBackend.prototype._bucket.list = function(_return) {
    var _this = this._this;

    var query = {
        path: _this.defaults.resources.riak_kv_wm_index,
        options: { buckets: true },
        headers: { "accept": "application/json" }
    };

    _this.GET(query, function(err, obj) {
        if(err) _return(err, obj);
        else _return(err, obj.data.buckets || []);
    });
};

You would get at this like...

var riak = require('nodiak');

riak._bucket.list(function(err, results) {
  console.log(results);
});

That said, I would advise not architecting any solution around this functionality for a production application. Listing buckets in Riak is the same operation as listing keys across the cluster, which is a no-no. It's slow and puts a lot of load on the cluster.

[richtera]

Thank you. Yes this would not be normal functionality. This would be to implement a "flush" method to make a riak db look similar to a mongodb. When flush is called under mongo it called dropDatabase. My thought was to iterate through all buckets, find the ones with a common prefix (this is how I was thinking of implementing a "database") and then clear all those buckets. I'll give it a try. Thanks Andy

On Feb 26, 2013, at 8:36 AM, Nathan Aschbacher notifications@github.com wrote:

There is. The underlying ._bucket namespace on the client backend provides this functionality.

HTTPBackend.prototype._bucket.list = function(_return) { var _this = this._this;

var query = {
    path: _this.defaults.resources.riak_kv_wm_index,
    options: { buckets: true },
    headers: { "accept": "application/json" }
};

_this.GET(query, function(err, obj) {
    if(err) _return(err, obj);
    else _return(err, obj.data.buckets || []);
});

}; You would get at this like...

var riak = require('nodiak');

riak._bucket.list(function(err, results) { console.log(results); }); That said, I would advise not architecting any solution around this functionality for a production application. Listing buckets in Riak is the same operation as listing keys across the cluster, which is a no-no. It's slow and puts a lot of load on the cluster.

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[nathanaschbacher]

Sure thing. Feel free to reopen if you have any more questions.