public QueryAggregateExecutor(Cluster cluster, QueryPolicy policy, Statement statement)
: base(cluster, policy, statement)
{
inputQueue = new BlockingCollection<object>(500);
resultSet = new ResultSet(this, policy.recordQueueSize, cancel.Token);
InitializeThreads();
}
public ReadHeaderCommand(Cluster cluster, Policy policy, Key key)
{
this.cluster = cluster;
this.policy = policy;
this.key = key;
this.partition = new Partition(key);
}
public ExecuteCommand(Cluster cluster, WritePolicy writePolicy, Key key, string packageName, string functionName, Value[] args)
: base(cluster, writePolicy, key, null)
{
this.writePolicy = writePolicy;
this.packageName = packageName;
this.functionName = functionName;
this.args = args;
}
public ReadCommand(Cluster cluster, Policy policy, Key key, string[] binNames)
{
this.cluster = cluster;
this.policy = policy;
this.key = key;
this.partition = new Partition(key);
this.binNames = binNames;
}
/// <summary>
/// Add node(s) referenced by seed host aliases. In most cases, aliases reference
/// a single node. If round robin DNS configuration is used, the seed host may have
/// several aliases that reference different nodes in the cluster.
/// </summary>
public void SeedNodes(Cluster cluster, Host host, List<Node> list)
{
IPAddress[] addresses = SetAliases(cluster, host);
Exception exception = null;
bool found = false;
foreach (IPAddress address in addresses)
{
try
{
ValidateAlias(cluster, address, host.port);
found = true;
if (!FindNodeName(list, name))
{
// New node found.
Node node = cluster.CreateNode(this);
cluster.AddAliases(node);
list.Add(node);
}
else
{
// Node already referenced. Close connection.
conn.Close();
}
}
catch (Exception e)
{
// Log and continue to next address.
if (Log.DebugEnabled())
{
Log.Debug("Alias " + address + " failed: " + Util.GetErrorMessage(e));
}
if (exception == null)
{
exception = e;
}
}
}
if (!found)
{
// Exception can't be null here because SetAliases()/Connection.GetHostAddresses()
// will throw exception if aliases length is zero.
throw exception;
}
}
/// <summary>
/// Initialize server node with connection parameters.
/// </summary>
/// <param name="cluster">collection of active server nodes</param>
/// <param name="nv">connection parameters</param>
public Node(Cluster cluster, NodeValidator nv)
{
this.cluster = cluster;
this.name = nv.name;
this.aliases = nv.aliases;
this.address = nv.address;
this.hasDouble = nv.hasDouble;
this.hasBatchIndex = nv.hasBatchIndex;
this.hasReplicasAll = nv.hasReplicasAll;
// Assign host to first IP alias because the server identifies nodes
// by IP address (not hostname).
this.host = aliases[0];
connectionQueue = new BlockingCollection<Connection>(cluster.connectionQueueSize);
}
public QueryExecutor(Cluster cluster, QueryPolicy policy, Statement statement)
{
this.policy = policy;
this.statement = statement;
this.cancel = new CancellationTokenSource();
this.nodes = cluster.Nodes;
if (this.nodes.Length == 0)
{
throw new AerospikeException(ResultCode.SERVER_NOT_AVAILABLE, "Query failed because cluster is empty.");
}
this.threads = new QueryThread[nodes.Length];
// Initialize maximum number of nodes to query in parallel.
this.maxConcurrentNodes = (policy.maxConcurrentNodes == 0 || policy.maxConcurrentNodes >= threads.Length) ? threads.Length : policy.maxConcurrentNodes;
}
public static List<BatchNode> GenerateList(Cluster cluster, BatchPolicy policy, Key[] keys)
{
Node[] nodes = cluster.Nodes;
if (nodes.Length == 0)
{
throw new AerospikeException(ResultCode.SERVER_NOT_AVAILABLE, "Command failed because cluster is empty.");
}
// Create initial key capacity for each node as average + 25%.
int keysPerNode = keys.Length / nodes.Length;
keysPerNode += (int)((uint)keysPerNode >> 2);
// The minimum key capacity is 10.
if (keysPerNode < 10)
{
keysPerNode = 10;
}
// Split keys by server node.
List<BatchNode> batchNodes = new List<BatchNode>(nodes.Length);
for (int i = 0; i < keys.Length; i++)
{
Partition partition = new Partition(keys[i]);
Node node = cluster.GetReadNode(partition, policy.replica);
BatchNode batchNode = FindBatchNode(batchNodes, node);
if (batchNode == null)
{
batchNodes.Add(new BatchNode(node, keysPerNode, i));
}
else
{
batchNode.AddKey(i);
}
}
return batchNodes;
}
public AsyncBatchExecutor(Cluster cluster, BatchPolicy policy, Key[] keys)
{
this.keys = keys;
this.batchNodes = BatchNode.GenerateList(cluster, policy, keys);
// Count number of asynchronous commands needed.
int size = 0;
foreach (BatchNode batchNode in batchNodes)
{
if (batchNode.node.UseNewBatch(policy))
{
// New batch
size++;
}
else
{
// Old batch only allows one namespace per call.
batchNode.SplitByNamespace(keys);
size += batchNode.batchNamespaces.Count;
}
}
this.taskSize = size;
}
public void DropRole(Cluster cluster, AdminPolicy policy, string roleName)
{
WriteHeader(DROP_ROLE, 1);
WriteField(ROLE, roleName);
ExecuteCommand(cluster, policy);
}
protected internal override Node GetNode(Cluster cluster)
{
return(serverNode);
}
public NodeValidator(Cluster cluster, Host host)
{
IPAddress[] addresses = Connection.GetHostAddresses(host.name, DEFAULT_TIMEOUT);
aliases = new Host[addresses.Length];
for (int i = 0; i < addresses.Length; i++)
{
aliases[i] = new Host(addresses[i].ToString(), host.port);
}
Exception exception = null;
for (int i = 0; i < addresses.Length; i++)
{
try
{
IPEndPoint address = new IPEndPoint(addresses[i], host.port);
Connection conn = new Connection(address, cluster.connectionTimeout);
try
{
if (cluster.user != null)
{
AdminCommand command = new AdminCommand();
command.Authenticate(conn, cluster.user, cluster.password);
}
Dictionary<string, string> map = Info.Request(conn, "node", "features");
string nodeName;
if (map.TryGetValue("node", out nodeName))
{
this.name = nodeName;
this.address = address;
SetFeatures(map);
return;
}
}
finally
{
conn.Close();
}
}
catch (Exception e)
{
// Try next address.
if (Log.DebugEnabled())
{
Log.Debug("Alias " + addresses[i] + " failed: " + Util.GetErrorMessage(e));
}
if (exception == null)
{
exception = e;
}
}
}
if (exception == null)
{
throw new AerospikeException.Connection("Failed to find addresses for " + host);
}
throw exception;
}
public User QueryUser(Cluster cluster, AdminPolicy policy, string user)
{
base.WriteHeader(QUERY_USERS, 1);
base.WriteField(USER, user);
base.ExecuteQuery(cluster, policy);
return (list.Count > 0) ? list[0] : null;
}
public Role QueryRole(Cluster cluster, AdminPolicy policy, string roleName)
{
base.WriteHeader(QUERY_ROLES, 1);
base.WriteField(ROLE, roleName);
base.ExecuteQuery(cluster, policy);
return (list.Count > 0) ? list[0] : null;
}
private void ExecuteCommand(Cluster cluster, AdminPolicy policy)
{
WriteSize();
Node node = cluster.GetRandomNode();
int timeout = (policy == null) ? 1000 : policy.timeout;
Connection conn = node.GetConnection(timeout);
try
{
conn.Write(dataBuffer, dataOffset);
conn.ReadFully(dataBuffer, HEADER_SIZE);
node.PutConnection(conn);
}
catch (Exception)
{
// Garbage may be in socket. Do not put back into pool.
node.CloseConnection(conn);
throw;
}
int result = dataBuffer[RESULT_CODE];
if (result != 0)
{
throw new AerospikeException(result);
}
}
public void RevokeRoles(Cluster cluster, AdminPolicy policy, string user, IList<string> roles)
{
WriteHeader(REVOKE_ROLES, 2);
WriteField(USER, user);
WriteRoles(roles);
ExecuteCommand(cluster, policy);
}
public void DropUser(Cluster cluster, AdminPolicy policy, string user)
{
WriteHeader(DROP_USER, 1);
WriteField(USER, user);
ExecuteCommand(cluster, policy);
}
/// <summary>
/// Initialize Aerospike client with suitable hosts to seed the cluster map.
/// The client policy is used to set defaults and size internal data structures.
/// For each host connection that succeeds, the client will:
/// <list type="bullet">
/// <item>Add host to the cluster map</item>
/// <item>Request host's list of other nodes in cluster</item>
/// <item>Add these nodes to cluster map</item>
/// </list>
/// <para>
/// In most cases, only one host is necessary to seed the cluster. The remaining hosts
/// are added as future seeds in case of a complete network failure.
/// </para>
/// <para>
/// If one connection succeeds, the client is ready to process database requests.
/// If all connections fail and the policy's failIfNotConnected is true, a connection
/// exception will be thrown. Otherwise, the cluster will remain in a disconnected state
/// until the server is activated.
/// </para>
/// </summary>
/// <param name="policy">client configuration parameters, pass in null for defaults</param>
/// <param name="hosts">array of potential hosts to seed the cluster</param>
/// <exception cref="AerospikeException">if all host connections fail</exception>
public AerospikeClient(ClientPolicy policy, params Host[] hosts)
{
if (policy == null)
{
policy = new ClientPolicy();
}
this.readPolicyDefault = policy.readPolicyDefault;
this.writePolicyDefault = policy.writePolicyDefault;
this.scanPolicyDefault = policy.scanPolicyDefault;
this.queryPolicyDefault = policy.queryPolicyDefault;
this.batchPolicyDefault = policy.batchPolicyDefault;
this.infoPolicyDefault = policy.infoPolicyDefault;
cluster = new Cluster(policy, hosts);
cluster.InitTendThread(policy.failIfNotConnected);
}
/// <summary>
/// Initialize task that has already completed.
/// </summary>
public BaseTask()
{
this.cluster = null;
this.policy = null;
this.done = true;
}
/// <summary>
/// Initialize task with fields needed to query server nodes.
/// </summary>
public BaseTask(Cluster cluster, Policy policy)
{
this.cluster = cluster;
this.policy = new InfoPolicy(policy);
this.done = false;
}
public void RevokePrivileges(Cluster cluster, AdminPolicy policy, string roleName, IList<Privilege> privileges)
{
WriteHeader(REVOKE_PRIVILEGES, 2);
WriteField(ROLE, roleName);
WritePrivileges(privileges);
ExecuteCommand(cluster, policy);
}
public static RegisterTask Register(Cluster cluster, Policy policy, string content, string serverPath, Language language)
{
StringBuilder sb = new StringBuilder(serverPath.Length + content.Length + 100);
sb.Append("udf-put:filename=");
sb.Append(serverPath);
sb.Append(";content=");
sb.Append(content);
sb.Append(";content-len=");
sb.Append(content.Length);
sb.Append(";udf-type=");
sb.Append(language);
sb.Append(";");
// Send UDF to one node. That node will distribute the UDF to other nodes.
string command = sb.ToString();
Node node = cluster.GetRandomNode();
Connection conn = node.GetConnection(policy.timeout);
try
{
Info info = new Info(conn, command);
Info.NameValueParser parser = info.GetNameValueParser();
string error = null;
string file = null;
string line = null;
string message = null;
while (parser.Next())
{
string name = parser.GetName();
if (name.Equals("error"))
{
error = parser.GetValue();
}
else if (name.Equals("file"))
{
file = parser.GetValue();
}
else if (name.Equals("line"))
{
line = parser.GetValue();
}
else if (name.Equals("message"))
{
message = parser.GetStringBase64();
}
}
if (error != null)
{
throw new AerospikeException("Registration failed: " + error + Environment.NewLine +
"File: " + file + Environment.NewLine +
"Line: " + line + Environment.NewLine +
"Message: " + message
);
}
node.PutConnection(conn);
return new RegisterTask(cluster, policy, serverPath);
}
catch (Exception)
{
conn.Close();
throw;
}
}
public void SetPassword(Cluster cluster, AdminPolicy policy, byte[] user, string password)
{
WriteHeader(SET_PASSWORD, 2);
WriteField(USER, user);
WriteField(PASSWORD, password);
ExecuteCommand(cluster, policy);
}
/// <summary>
/// Initialize task with fields needed to query server nodes.
/// </summary>
public IndexTask(Cluster cluster, Policy policy, string ns, string indexName)
: base(cluster, policy)
{
this.ns = ns;
this.indexName = indexName;
}
private void ExecuteQuery(Cluster cluster, AdminPolicy policy)
{
WriteSize();
Node node = cluster.GetRandomNode();
int timeout = (policy == null) ? 1000 : policy.timeout;
int status = 0;
Connection conn = node.GetConnection(timeout);
try
{
conn.Write(dataBuffer, dataOffset);
status = ReadBlocks(conn);
node.PutConnection(conn);
}
catch (Exception e)
{
// Garbage may be in socket. Do not put back into pool.
node.CloseConnection(conn);
throw new AerospikeException(e);
}
if (status != QUERY_END && status > 0)
{
throw new AerospikeException(status, "Query failed.");
}
}
protected internal abstract List <BatchNode> GenerateBatchNodes(Cluster cluster);
public List<Role> QueryRoles(Cluster cluster, AdminPolicy policy)
{
base.WriteHeader(QUERY_ROLES, 0);
base.ExecuteQuery(cluster, policy);
return list;
}
public void ChangePassword(Cluster cluster, AdminPolicy policy, byte[] user, string password)
{
WriteHeader(CHANGE_PASSWORD, 3);
WriteField(USER, user);
WriteField(OLD_PASSWORD, cluster.password);
WriteField(PASSWORD, password);
ExecuteCommand(cluster, policy);
}
public List<User> QueryUsers(Cluster cluster, AdminPolicy policy)
{
base.WriteHeader(QUERY_USERS, 0);
base.ExecuteQuery(cluster, policy);
return list;
}
protected internal override Node GetNode(Cluster cluster)
{
return(args.hasWrite ? partition.GetNodeWrite(cluster) : partition.GetNodeRead(cluster));
}
public static void Execute(Cluster cluster, BatchPolicy policy, Key[] keys, bool[] existsArray, Record[] records, string[] binNames, int readAttr)
{
if (keys.Length == 0)
{
return;
}
if (policy.allowProleReads)
{
// Send all requests to a single node chosen in round-robin fashion in this transaction thread.
Node node = cluster.GetRandomNode();
BatchNode batchNode = new BatchNode(node, keys);
ExecuteNode(batchNode, policy, keys, existsArray, records, binNames, readAttr);
return;
}
List<BatchNode> batchNodes = BatchNode.GenerateList(cluster, policy, keys);
if (policy.maxConcurrentThreads == 1 || batchNodes.Count <= 1)
{
// Run batch requests sequentially in same thread.
foreach (BatchNode batchNode in batchNodes)
{
ExecuteNode(batchNode, policy, keys, existsArray, records, binNames, readAttr);
}
}
else
{
// Run batch requests in parallel in separate threads.
//
// Multiple threads write to the record/exists array, so one might think that
// volatile or memory barriers are needed on the write threads and this read thread.
// This should not be necessary here because it happens in Executor which does a
// volatile write (Interlocked.Increment(ref completedCount)) at the end of write threads
// and a synchronized WaitTillComplete() in this thread.
Executor executor = new Executor(batchNodes.Count * 2);
// Initialize threads.
foreach (BatchNode batchNode in batchNodes)
{
if (batchNode.node.UseNewBatch(policy))
{
// New batch
if (records != null)
{
MultiCommand command = new BatchGetArrayCommand(batchNode, policy, keys, binNames, records, readAttr);
executor.AddCommand(command);
}
else
{
MultiCommand command = new BatchExistsArrayCommand(batchNode, policy, keys, existsArray);
executor.AddCommand(command);
}
}
else
{
// There may be multiple threads for a single node because the
// wire protocol only allows one namespace per command. Multiple namespaces
// require multiple threads per node.
batchNode.SplitByNamespace(keys);
foreach (BatchNode.BatchNamespace batchNamespace in batchNode.batchNamespaces)
{
if (records != null)
{
MultiCommand command = new BatchGetArrayDirect(batchNode.node, batchNamespace, policy, keys, binNames, records, readAttr);
executor.AddCommand(command);
}
else
{
MultiCommand command = new BatchExistsArrayDirect(batchNode.node, batchNamespace, policy, keys, existsArray);
executor.AddCommand(command);
}
}
}
}
executor.Execute(policy.maxConcurrentThreads);
}
}
public void CreateUser(Cluster cluster, AdminPolicy policy, string user, string password, IList<string> roles)
{
WriteHeader(CREATE_USER, 3);
WriteField(USER, user);
WriteField(PASSWORD, password);
WriteRoles(roles);
ExecuteCommand(cluster, policy);
}
public void CreateRole(Cluster cluster, AdminPolicy policy, string roleName, IList<Privilege> privileges)
{
WriteHeader(CREATE_ROLE, 2);
WriteField(ROLE, roleName);
WritePrivileges(privileges);
ExecuteCommand(cluster, policy);
}
protected internal override List <BatchNode> GenerateBatchNodes(Cluster cluster)
{
return(BatchNode.GenerateList(cluster, policy, records, sequenceAP, sequenceSC, batch));
}