View Source Xandra.Cluster.Host (Xandra v0.19.1)

The data structure to represent a host in a Cassandra cluster.

The fields of this struct are public. See t/0 for information on their type, and %Xandra.Cluster.Host{} for more information.

Summary

Types

t()

The type for the host struct.

Functions

%Xandra.Cluster.Host{}

The struct that represents a host in a Cassandra cluster.

format_address(host)

Formats a host's address and port as a string.

Types

t()

(since 0.15.0)

@type t() :: %Xandra.Cluster.Host{
  address: :inet.ip_address() | String.t(),
  data_center: String.t(),
  host_id: String.t(),
  port: :inet.port_number(),
  rack: String.t(),
  release_version: String.t(),
  schema_version: String.t(),
  tokens: MapSet.t(String.t())
}

The type for the host struct.

Fields

:address - the address of the host. It can be either an IP address or a hostname. If Xandra managed to connect to this host, then the :address will be the actual IP peer (see :inet.peername/1). Otherwise, the :address will be the parsed IP or the charlist hostname. For example, if you pass "10.0.2.1" as the address, Xandra will normalize it to {10, 0, 2, 1}.
:port - the port of the host.
:data_center - the data center of the host, as found in the system.local or system.peers table.
:host_id - the ID of the host, as found in the system.local or system.peers table.
:rack - the rack of the host, as found in the system.local or system.peers table.
:release_version - the release version of the host, as found in the system.local or system.peers table.
:schema_version - the schema version of the host, as found in the system.local or system.peers table.
:tokens - the tokens held by the host, as found in the system.local or system.peers table.

Functions

%Xandra.Cluster.Host{}

(since 0.15.0) (struct)

The struct that represents a host in a Cassandra cluster.

See t/0 for the type of each field.

format_address(host)

(since 0.15.0)

@spec format_address(t()) :: String.t()

Formats a host's address and port as a string.

Examples

iex> host = %Xandra.Cluster.Host{address: {127, 0, 0, 1}, port: 9042}
iex> Xandra.Cluster.Host.format_address(host)
"127.0.0.1:9042"

iex> host = %Xandra.Cluster.Host{address: "example.com", port: 9042}
iex> Xandra.Cluster.Host.format_address(host)
"example.com:9042"