Class ServiceConfigUtil

java.lang.Object

io.grpc.internal.ServiceConfigUtil

public final class ServiceConfigUtil
extends Object

Helper utility to work with service configs.

This class contains helper methods to parse service config JSON values into Java types.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	ServiceConfigUtil.LbConfig	A LoadBalancingConfig that includes the policy name (the key) and its raw config value (parsed JSON).
static final class	ServiceConfigUtil.PolicySelection

Method Summary

Modifier and Type	Method	Description
static Map<String,?>	getHealthCheckedService(Map<String,?> serviceConfig)	Fetches the health-checked service config from service config.
static String	getHealthCheckedServiceName(Map<String,?> healthCheckedServiceConfig)	Fetches the health-checked service name from health-checked service config.
static List<Map<String,?>>	getLoadBalancingConfigsFromServiceConfig(Map<String,?> serviceConfig)	Extracts load balancing configs from a service config.
static NameResolver.ConfigOrError	selectLbPolicyFromList(List<ServiceConfigUtil.LbConfig> lbConfigs, LoadBalancerRegistry lbRegistry)	Parses and selects a load balancing policy from a non-empty list of raw configs.
static ServiceConfigUtil.LbConfig	unwrapLoadBalancingConfig(Map<String,?> lbConfig)	Unwrap a LoadBalancingConfig JSON object into a ServiceConfigUtil.LbConfig.
static List<ServiceConfigUtil.LbConfig>	unwrapLoadBalancingConfigList(List<Map<String,?>> list)	Given a JSON list of LoadBalancingConfigs, and convert it into a list of LbConfig.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

getHealthCheckedService

@Nullable
public static Map<String,?> getHealthCheckedService(@Nullable
 Map<String,?> serviceConfig)

Fetches the health-checked service config from service config. null if can't find one.

getHealthCheckedServiceName

@Nullable
public static String getHealthCheckedServiceName(@Nullable
 Map<String,?> healthCheckedServiceConfig)

Fetches the health-checked service name from health-checked service config. null if can't find one.

getLoadBalancingConfigsFromServiceConfig

public static List<Map<String,?>> getLoadBalancingConfigsFromServiceConfig(Map<String,?> serviceConfig)

Extracts load balancing configs from a service config.

unwrapLoadBalancingConfig

public static ServiceConfigUtil.LbConfig unwrapLoadBalancingConfig(Map<String,?> lbConfig)

Unwrap a LoadBalancingConfig JSON object into a ServiceConfigUtil.LbConfig. The input is a JSON object (map) with exactly one entry, where the key is the policy name and the value is a config object for that policy.

unwrapLoadBalancingConfigList

public static List<ServiceConfigUtil.LbConfig> unwrapLoadBalancingConfigList(List<Map<String,?>> list)

Given a JSON list of LoadBalancingConfigs, and convert it into a list of LbConfig.

selectLbPolicyFromList

public static NameResolver.ConfigOrError selectLbPolicyFromList(List<ServiceConfigUtil.LbConfig> lbConfigs,
 LoadBalancerRegistry lbRegistry)

Parses and selects a load balancing policy from a non-empty list of raw configs. If selection is successful, the returned ConfigOrError object will include a ServiceConfigUtil.PolicySelection as its config value.