Add Dynamic loading support to fiam. #2535
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,198 @@ | ||
| // Copyright 2018 Google LLC | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
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| package com.google.firebase.inappmessaging.internal; | ||
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| import android.os.Bundle; | ||
| import androidx.annotation.GuardedBy; | ||
| import androidx.annotation.NonNull; | ||
| import androidx.annotation.Nullable; | ||
| import com.google.firebase.analytics.connector.AnalyticsConnector; | ||
| import com.google.firebase.inject.Deferred; | ||
| import java.util.Collections; | ||
| import java.util.HashSet; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
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| /** | ||
| * Proxy connector that delegates to analytics when it's available. | ||
| * | ||
| * <p>For a subset of functionality it also caches calls and propagates them to analytics once it | ||
| * loads. | ||
| */ | ||
| public class ProxyAnalyticsConnector implements AnalyticsConnector { | ||
| private volatile Object instance; | ||
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| public ProxyAnalyticsConnector(Deferred<AnalyticsConnector> analyticsConnector) { | ||
| instance = analyticsConnector; | ||
| analyticsConnector.whenAvailable(connectorProvider -> instance = connectorProvider.get()); | ||
| } | ||
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| private AnalyticsConnector safeGet() { | ||
| Object result = instance; | ||
| if (result instanceof AnalyticsConnector) { | ||
| return (AnalyticsConnector) result; | ||
| } | ||
| return null; | ||
| } | ||
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| @Override | ||
| public void logEvent(@NonNull String s, @NonNull String s1, @NonNull Bundle bundle) { | ||
| AnalyticsConnector connector = safeGet(); | ||
| if (connector != null) { | ||
| connector.logEvent(s, s1, bundle); | ||
| } | ||
| } | ||
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| @Override | ||
| public void setUserProperty(@NonNull String s, @NonNull String s1, @NonNull Object o) { | ||
| AnalyticsConnector connector = safeGet(); | ||
| if (connector != null) { | ||
| connector.setUserProperty(s, s1, o); | ||
| } | ||
| } | ||
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| // Not implemented since it's not used by fiam | ||
| @NonNull | ||
| @Override | ||
| public Map<String, Object> getUserProperties(boolean b) { | ||
| return Collections.emptyMap(); | ||
| } | ||
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| @NonNull | ||
| @Override | ||
| public AnalyticsConnectorHandle registerAnalyticsConnectorListener( | ||
| @NonNull String s, @NonNull AnalyticsConnectorListener analyticsConnectorListener) { | ||
| Object result = instance; | ||
| if (result instanceof AnalyticsConnector) { | ||
| return ((AnalyticsConnector) result) | ||
| .registerAnalyticsConnectorListener(s, analyticsConnectorListener); | ||
| } | ||
| @SuppressWarnings("unchecked") | ||
| Deferred<AnalyticsConnector> deferred = (Deferred<AnalyticsConnector>) result; | ||
| return new ProxyAnalyticsConnectorHandle(s, analyticsConnectorListener, deferred); | ||
| } | ||
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| // Not implemented since it's not used by fiam. | ||
| @Override | ||
| public void setConditionalUserProperty( | ||
| @NonNull ConditionalUserProperty conditionalUserProperty) {} | ||
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| // Not implemented since it's not used by fiam. | ||
| @Override | ||
| public void clearConditionalUserProperty( | ||
| @NonNull String s, @Nullable String s1, @Nullable Bundle bundle) {} | ||
|
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| // Not implemented since it's not used by fiam. | ||
| @NonNull | ||
| @Override | ||
| public List<ConditionalUserProperty> getConditionalUserProperties( | ||
| @NonNull String s, @Nullable String s1) { | ||
| return Collections.emptyList(); | ||
| } | ||
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| // Not implemented since it's not used by fiam. | ||
| @Override | ||
| public int getMaxUserProperties(@NonNull String s) { | ||
| return 0; | ||
| } | ||
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| private static class ProxyAnalyticsConnectorHandle implements AnalyticsConnectorHandle { | ||
| private static final Object UNREGISTERED = new Object(); | ||
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| @GuardedBy("this") | ||
| private Set<String> eventNames = new HashSet<>(); | ||
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| private volatile Object instance; | ||
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| private ProxyAnalyticsConnectorHandle( | ||
| String s, | ||
| AnalyticsConnectorListener listener, | ||
| Deferred<AnalyticsConnector> analyticsConnector) { | ||
| analyticsConnector.whenAvailable( | ||
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| connectorProvider -> { | ||
| Object result = instance; | ||
| if (result == UNREGISTERED) { | ||
| return; | ||
| } | ||
| AnalyticsConnector connector = connectorProvider.get(); | ||
| // Now that analytics is available: | ||
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| // register the listener with analytics. | ||
| AnalyticsConnectorHandle handle = | ||
| connector.registerAnalyticsConnectorListener(s, listener); | ||
| instance = handle; | ||
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| // propagate registered event names to analytics. | ||
| synchronized (ProxyAnalyticsConnectorHandle.this) { | ||
| if (!eventNames.isEmpty()) { | ||
|
There was a problem hiding this comment. Worth adding some comments here. |
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| handle.registerEventNames(eventNames); | ||
| eventNames = new HashSet<>(); | ||
| } | ||
| } | ||
| }); | ||
| } | ||
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| @Override | ||
| public void unregister() { | ||
| Object result = instance; | ||
| if (result == UNREGISTERED) { | ||
| return; | ||
| } | ||
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| if (result != null) { | ||
| AnalyticsConnectorHandle handle = (AnalyticsConnectorHandle) result; | ||
| handle.unregister(); | ||
| } | ||
| instance = UNREGISTERED; | ||
| synchronized (this) { | ||
| eventNames.clear(); | ||
| } | ||
| } | ||
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| @Override | ||
| public void registerEventNames(@NonNull Set<String> set) { | ||
| Object result = instance; | ||
| if (result == UNREGISTERED) { | ||
| return; | ||
| } | ||
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| if (result != null) { | ||
| AnalyticsConnectorHandle handle = (AnalyticsConnectorHandle) result; | ||
| handle.registerEventNames(set); | ||
| return; | ||
| } | ||
| synchronized (this) { | ||
| eventNames.addAll(set); | ||
| } | ||
| } | ||
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| @Override | ||
| public void unregisterEventNames() { | ||
| Object result = instance; | ||
| if (result == UNREGISTERED) { | ||
| return; | ||
| } | ||
| if (result != null) { | ||
| AnalyticsConnectorHandle handle = (AnalyticsConnectorHandle) result; | ||
| handle.unregisterEventNames(); | ||
| return; | ||
| } | ||
| synchronized (this) { | ||
| eventNames.clear(); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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