Package io.netty.resolver.dns
Enum DnsNameResolverChannelStrategy
- java.lang.Object
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- java.lang.Enum<DnsNameResolverChannelStrategy>
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- io.netty.resolver.dns.DnsNameResolverChannelStrategy
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Comparable<DnsNameResolverChannelStrategy>
public enum DnsNameResolverChannelStrategy extends java.lang.Enum<DnsNameResolverChannelStrategy>
Strategy that influence howChannel
s are used during queries.
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Enum Constant Summary
Enum Constants Enum Constant Description ChannelPerResolution
Use a newChannel
per resolution or per explicit query.ChannelPerResolver
Use the same underlyingChannel
for all queries produced by a singleDnsNameResolver
instance.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static DnsNameResolverChannelStrategy
valueOf(java.lang.String name)
Returns the enum constant of this type with the specified name.static DnsNameResolverChannelStrategy[]
values()
Returns an array containing the constants of this enum type, in the order they are declared.
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Enum Constant Detail
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ChannelPerResolver
public static final DnsNameResolverChannelStrategy ChannelPerResolver
Use the same underlyingChannel
for all queries produced by a singleDnsNameResolver
instance.
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ChannelPerResolution
public static final DnsNameResolverChannelStrategy ChannelPerResolution
Use a newChannel
per resolution or per explicit query. As of today this is similar to what theDefaultNameResolver
(JDK default) does. As we will need to open and close a new socket for each resolution it will come with a performance overhead. That said using this strategy should be the most robust and also guard against problems that can arise in kubernetes (or similar) setups.
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Method Detail
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values
public static DnsNameResolverChannelStrategy[] values()
Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:for (DnsNameResolverChannelStrategy c : DnsNameResolverChannelStrategy.values()) System.out.println(c);
- Returns:
- an array containing the constants of this enum type, in the order they are declared
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valueOf
public static DnsNameResolverChannelStrategy valueOf(java.lang.String name)
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)- Parameters:
name
- the name of the enum constant to be returned.- Returns:
- the enum constant with the specified name
- Throws:
java.lang.IllegalArgumentException
- if this enum type has no constant with the specified namejava.lang.NullPointerException
- if the argument is null
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