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feat: refactor GrpcConnector to use grpc builtin reconnection
Signed-off-by: Bernd Warmuth <[email protected]>
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113 changes: 83 additions & 30 deletions
113
...rc/main/java/dev/openfeature/contrib/providers/flagd/resolver/common/ConnectionEvent.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,69 +1,122 @@ | ||
| package dev.openfeature.contrib.providers.flagd.resolver.common; | ||
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| import java.util.Collections; | ||
| import java.util.List; | ||
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| import dev.openfeature.sdk.ImmutableStructure; | ||
| import dev.openfeature.sdk.Structure; | ||
| import lombok.AllArgsConstructor; | ||
| import lombok.Getter; | ||
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| import java.util.Collections; | ||
| import java.util.List; | ||
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| /** | ||
| * Event payload for a | ||
| * {@link dev.openfeature.contrib.providers.flagd.resolver.Resolver} connection | ||
| * state change event. | ||
| * Represents an event payload for a connection state change in a | ||
| * {@link dev.openfeature.contrib.providers.flagd.resolver.Resolver}. | ||
| * The event includes information about the connection status, any flags that have changed, | ||
| * and metadata associated with the synchronization process. | ||
| */ | ||
| @AllArgsConstructor | ||
| public class ConnectionEvent { | ||
| @Getter | ||
| private final boolean connected; | ||
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| /** | ||
| * The current state of the connection. | ||
| */ | ||
| private final ConnectionState connected; | ||
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| /** | ||
| * A list of flags that have changed due to this connection event. | ||
| */ | ||
| private final List<String> flagsChanged; | ||
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| /** | ||
| * Metadata associated with synchronization in this connection event. | ||
| */ | ||
| private final Structure syncMetadata; | ||
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| /** | ||
| * Construct a new ConnectionEvent. | ||
| * | ||
| * @param connected status of the connection | ||
| * Constructs a new {@code ConnectionEvent} with the connection status only. | ||
| * | ||
| * @param connected {@code true} if the connection is established, otherwise {@code false}. | ||
| */ | ||
| public ConnectionEvent(boolean connected) { | ||
| this(connected ? ConnectionState.CONNECTED : ConnectionState.DISCONNECTED, Collections.emptyList(), | ||
| new ImmutableStructure()); | ||
| } | ||
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| /** | ||
| * Constructs a new {@code ConnectionEvent} with the specified connection state. | ||
| * | ||
| * @param connected the connection state indicating if the connection is established or not. | ||
| */ | ||
| public ConnectionEvent(ConnectionState connected) { | ||
| this(connected, Collections.emptyList(), new ImmutableStructure()); | ||
| } | ||
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| /** | ||
| * Construct a new ConnectionEvent. | ||
| * | ||
| * @param connected status of the connection | ||
| * @param flagsChanged list of flags changed | ||
| * Constructs a new {@code ConnectionEvent} with the specified connection state and changed flags. | ||
| * | ||
| * @param connected the connection state indicating if the connection is established or not. | ||
| * @param flagsChanged a list of flags that have changed due to this connection event. | ||
| */ | ||
| public ConnectionEvent(boolean connected, List<String> flagsChanged) { | ||
| public ConnectionEvent(ConnectionState connected, List<String> flagsChanged) { | ||
| this(connected, flagsChanged, new ImmutableStructure()); | ||
| } | ||
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| /** | ||
| * Construct a new ConnectionEvent. | ||
| * | ||
| * @param connected status of the connection | ||
| * @param syncMetadata sync.getMetadata | ||
| * Constructs a new {@code ConnectionEvent} with the specified connection state and synchronization metadata. | ||
| * | ||
| * @param connected the connection state indicating if the connection is established or not. | ||
| * @param syncMetadata metadata related to the synchronization process of this event. | ||
| */ | ||
| public ConnectionEvent(boolean connected, Structure syncMetadata) { | ||
| public ConnectionEvent(ConnectionState connected, Structure syncMetadata) { | ||
| this(connected, Collections.emptyList(), new ImmutableStructure(syncMetadata.asMap())); | ||
| } | ||
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| /** | ||
| * Get changed flags. | ||
| * | ||
| * @return an unmodifiable view of the changed flags | ||
| * Constructs a new {@code ConnectionEvent} with the specified connection state, changed flags, and | ||
| * synchronization metadata. | ||
| * | ||
| * @param connectionState the state of the connection. | ||
| * @param flagsChanged a list of flags that have changed due to this connection event. | ||
| * @param syncMetadata metadata related to the synchronization process of this event. | ||
| */ | ||
| public ConnectionEvent(ConnectionState connectionState, List<String> flagsChanged, Structure syncMetadata) { | ||
| this.connected = connectionState; | ||
| this.flagsChanged = flagsChanged != null ? flagsChanged : Collections.emptyList(); // Ensure non-null list | ||
| this.syncMetadata = syncMetadata != null ? new ImmutableStructure(syncMetadata.asMap()) : | ||
| new ImmutableStructure(); // Ensure valid syncMetadata | ||
| } | ||
|
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| /** | ||
| * Retrieves an unmodifiable view of the list of changed flags. | ||
| * | ||
| * @return an unmodifiable list of changed flags. | ||
| */ | ||
| public List<String> getFlagsChanged() { | ||
| return Collections.unmodifiableList(flagsChanged); | ||
| } | ||
|
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| /** | ||
| * Get changed sync metadata represented as SDK structure type. | ||
| * | ||
| * @return an unmodifiable view of the sync metadata | ||
| * Retrieves the synchronization metadata represented as an immutable SDK structure type. | ||
| * | ||
| * @return an immutable structure containing the synchronization metadata. | ||
| */ | ||
| public Structure getSyncMetadata() { | ||
| return new ImmutableStructure(syncMetadata.asMap()); | ||
| } | ||
|
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| /** | ||
| * Indicates whether the current connection state is connected. | ||
| * | ||
| * @return {@code true} if connected, otherwise {@code false}. | ||
| */ | ||
| public boolean isConnected() { | ||
| return this.connected == ConnectionState.CONNECTED; | ||
| } | ||
|
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| /** | ||
| * Indicates | ||
| * whether the current connection state is stale. | ||
| * | ||
| * @return {@code true} if stale, otherwise {@code false}. | ||
| */ | ||
| public boolean isStale() { | ||
| return this.connected == ConnectionState.STALE; | ||
| } | ||
| } |
27 changes: 27 additions & 0 deletions
27
...rc/main/java/dev/openfeature/contrib/providers/flagd/resolver/common/ConnectionState.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| package dev.openfeature.contrib.providers.flagd.resolver.common; | ||
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| /** | ||
| * Represents the possible states of a connection. | ||
| */ | ||
| public enum ConnectionState { | ||
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| /** | ||
| * The connection is active and functioning as expected. | ||
| */ | ||
| CONNECTED, | ||
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| /** | ||
| * The connection is not active and has been fully disconnected. | ||
| */ | ||
| DISCONNECTED, | ||
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| /** | ||
| * The connection is inactive or degraded but may still recover. | ||
| */ | ||
| STALE, | ||
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| /** | ||
| * The connection has encountered an error and cannot function correctly. | ||
| */ | ||
| ERROR, | ||
| } |
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