com.basho.riak.client.raw

Interface RawClient

All Known Implementing Classes:

ClusterClient, HTTPClientAdapter, HTTPClusterClient, PBClientAdapter, PBClusterClient

public interface RawClient

Common interface for low-level clients.

If you have the urge to write a client to Riak, please, please implement this interface so it can drop straight into all the higher level API code

Author:

russell

Method Summary

Methods

Modifier and Type	Method and Description
void	delete(String bucket, String key) Delete the data at bucket/key
void	delete(String bucket, String key, DeleteMeta deleteMeta) Delete the data at bucket/key using the parameters in deleteMeta
void	delete(String bucket, String key, int deleteQuorum) Delete the data at bucket/key using deleteQuorum as the rw param
RiakResponse	fetch(String bucket, String key) Fetch data from bucket/key
RiakResponse	fetch(String bucket, String key, FetchMeta fetchMeta) Fetch data from the given bucket/key with fetchMeta
RiakResponse	fetch(String bucket, String key, int readQuorum) Fetch data from the given bukcet/key with read quorum readQuorum
BucketProperties	fetchBucket(String bucketName) The set of properties for the given bucket
List<String>	fetchIndex(IndexQuery indexQuery) Performs an 2i index query
byte[]	generateAndSetClientId() If you don't set a client id explicitly at least call this to set one.
byte[]	getClientId() Ask Riak for the client id for the current connection.
Transport	getTransport() The raw transport name.
RiakResponse	head(String bucket, String key, FetchMeta fetchMeta) Fetch only the meta-data from bucket/key
WalkResult	linkWalk(LinkWalkSpec linkWalkSpec) Performs a link walk operation described by the LinkWalkSpec provided.
Set<String>	listBuckets() An Unmodifiable Iterator view of the all the Buckets in Riak
Iterable<String>	listKeys(String bucketName) An unmodifiable Iterator view of the keys for the bucket named bucketName May be backed by a stream or a collection.
MapReduceResult	mapReduce(MapReduceSpec spec) Perform a map/reduce query defined by MapReduceSpec
void	ping() Riak connection health check, is Riak reachable.
void	setClientId(byte[] clientId) Set a client id, currently must be a 4 bytes exactly
void	shutdown()
NodeStats	stats() Performs a Riak /stats operation on the node(s) this client is connected to.
void	store(IRiakObject object) Store the given IRiakObject in Riak using the bucket default w/dw and false for returnBody
RiakResponse	store(IRiakObject object, StoreMeta storeMeta) Store the given IRiakObject in Riak at the location bucket/key
void	updateBucket(String name, BucketProperties bucketProperties) Update a buckets properties from the BucketProperties provided.

Method Detail

head

RiakResponse head(String bucket,
                String key,
                FetchMeta fetchMeta)
                  throws IOException

Fetch only the meta-data from bucket/key

Parameters:

bucket - the bucket

key - the key

fetchMeta - the fetch options

Returns:

a RiakResponse that, if it has an IRiakObject it will have an empty value

Throws:

IOException

fetch

RiakResponse fetch(String bucket,
                 String key)
                   throws IOException

Fetch data from bucket/key

Parameters:

bucket - the bucket

key - the key

Returns:

a RiakResponse

Throws:

IOException

fetch

RiakResponse fetch(String bucket,
                 String key,
                 int readQuorum)
                   throws IOException

Fetch data from the given bukcet/key with read quorum readQuorum

Parameters:

bucket - the bucket

key - the key

readQuorum - readQuorum, needs to be =< the buckets n_val

Returns:

a RiakResponse

Throws:

IOException

fetch

RiakResponse fetch(String bucket,
                 String key,
                 FetchMeta fetchMeta)
                   throws IOException

Fetch data from the given bucket/key with fetchMeta

Parameters:

bucket - the bucket

key - the key

fetchMeta - the extra fetch parameters FetchMeta

Returns:

a RiakResponse

Throws:

IOException

store

RiakResponse store(IRiakObject object,
                 StoreMeta storeMeta)
                   throws IOException

Store the given IRiakObject in Riak at the location bucket/key

Parameters:

object - the data to store

storeMeta - meta data for the store operation as a StoreMeta

Returns:

a RiakResponse if StoreMeta.getReturnBody() is true, or null

Throws:

IOException

store

void store(IRiakObject object)
           throws IOException

Store the given IRiakObject in Riak using the bucket default w/dw and false for returnBody

Parameters:

object - the data to store as an IRiakObject

Throws:

IOException

delete

void delete(String bucket,
          String key)
            throws IOException

Delete the data at bucket/key

Parameters:

bucket -

key -

Throws:

IOException

delete

void delete(String bucket,
          String key,
          int deleteQuorum)
            throws IOException

Delete the data at bucket/key using deleteQuorum as the rw param

Parameters:

bucket -

key -

deleteQuorum - an int that is less than or equal to the bucket's n_val

Throws:

IOException

delete

void delete(String bucket,
          String key,
          DeleteMeta deleteMeta)
            throws IOException

Delete the data at bucket/key using the parameters in deleteMeta

Parameters:

bucket -

key -

deleteMeta - the DeleteMeta containing the operation parameters

Throws:

IOException

listBuckets

Set<String> listBuckets()
                        throws IOException

An Unmodifiable Iterator view of the all the Buckets in Riak

Throws:

IOException

fetchBucket

BucketProperties fetchBucket(String bucketName)
                             throws IOException

The set of properties for the given bucket

Parameters:

bucketName - the name of the bucket

Returns:

a populated BucketProperties (by populated, as populated as the underlying API allows)

Throws:

IOException

updateBucket

void updateBucket(String name,
                BucketProperties bucketProperties)
                  throws IOException

Update a buckets properties from the BucketProperties provided. No guarantees that the underlying API is able to set all the properties passed.

Parameters:

name - the bucket to be updated

bucketProperties - the set of properties to be writen

Throws:

IOException

listKeys

Iterable<String> listKeys(String bucketName)
                          throws IOException

An unmodifiable Iterator view of the keys for the bucket named bucketName May be backed by a stream or a collection. Be careful, expensive.

Parameters:

bucketName -

Returns:

an unmodifiable, iterable view of the keys for tha bucket

Throws:

IOException

linkWalk

WalkResult linkWalk(LinkWalkSpec linkWalkSpec)
                    throws IOException

Performs a link walk operation described by the LinkWalkSpec provided. The underlying API may not support Link Walking directly but will approximate it at some cost.

Parameters:

linkWalkSpec -

Returns:

a WalkResult

Throws:

IOException

mapReduce

MapReduceResult mapReduce(MapReduceSpec spec)
                          throws IOException,
                                 MapReduceTimeoutException

Perform a map/reduce query defined by MapReduceSpec

Parameters:

spec - the m/r job specification

Returns:

A MapReduceResult

Throws:

IOException

MapReduceTimeoutException

generateAndSetClientId

byte[] generateAndSetClientId()
                              throws IOException

If you don't set a client id explicitly at least call this to set one. It generates the 4 byte ID and sets that Id on the client IE you *don't* need to call setClientId() with the result of generate.

Returns:

the generated clientId for the client

Throws:

IOException

setClientId

void setClientId(byte[] clientId)
                 throws IOException

Set a client id, currently must be a 4 bytes exactly

Parameters:

clientId - any 4 bytes

Throws:

IOException

getClientId

byte[] getClientId()
                   throws IOException

Ask Riak for the client id for the current connection.

Returns:

whatever 4 bytes Riak uses to identify this client

Throws:

IOException

ping

void ping()
          throws IOException

Riak connection health check, is Riak reachable. Can be used for diagnostics/monitoring

Throws:

IOException - if Riak is not reachable or returns anything other than OK

fetchIndex

List<String> fetchIndex(IndexQuery indexQuery)
                        throws IOException

Performs an 2i index query

Type Parameters:

T -

Parameters:

indexQuery - the query to perform

Returns:

a List of keys (or empty list)

Throws:

IOException

getTransport

Transport getTransport()

The raw transport name.

Returns:

the Transport for the client or null if not implemented.

shutdown

void shutdown()

stats

NodeStats stats()
                throws IOException

Performs a Riak /stats operation on the node(s) this client is connected to. The NodeStats object that is returned contains one or more sets of stats and can be Iterated over.

Returns:

a NodeStats object that represents one or more sets of stats.

Throws:

IOException