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URL preview: improve fix regarding message edition

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This commit is contained in:
Benoit Marty 2021-01-25 15:11:42 +01:00
parent 5eeb545ae2
commit 602ea3327b
4 changed files with 44 additions and 24 deletions
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3
matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/media/MediaService.kt
View file

@ -24,10 +24,9 @@ interface MediaService {
/**
* Extract URLs from a TimelineEvent.
* @param event TimelineEvent to extract the URL from.
* @param forceExtract Should be used for edited events. If true, URL will be extracted again even it is already in the cache.
* @return the list of URLs contains in the body of the TimelineEvent. It does not mean that URLs in this list have UrlPreview data
*/
fun extractUrls(event: TimelineEvent, forceExtract: Boolean = false): List<String>
fun extractUrls(event: TimelineEvent): List<String>
/**
* Get Raw Url Preview data from the homeserver. There is no cache management for this request

11
matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/room/timeline/TimelineEvent.kt
View file

@ -89,6 +89,17 @@ data class TimelineEvent(
*/
fun TimelineEvent.hasBeenEdited() = annotations?.editSummary != null
/**
* Get the latest known eventId for an edited event, or the eventId for an Event which has not been edited
*/
fun TimelineEvent.getLatestEventId(): String {
return annotations
?.editSummary
?.sourceEvents
?.lastOrNull()
?: eventId
}
/**
* Get the relation content if any
*/

10
matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/media/DefaultMediaService.kt
View file

@ -18,10 +18,10 @@ package org.matrix.android.sdk.internal.session.media
import androidx.collection.LruCache
import org.matrix.android.sdk.api.cache.CacheStrategy
import org.matrix.android.sdk.api.session.events.model.Event
import org.matrix.android.sdk.api.session.media.MediaService
import org.matrix.android.sdk.api.session.media.PreviewUrlData
import org.matrix.android.sdk.api.session.room.timeline.TimelineEvent
import org.matrix.android.sdk.api.session.room.timeline.getLatestEventId
import org.matrix.android.sdk.api.util.JsonDict
import org.matrix.android.sdk.internal.util.getOrPut
import javax.inject.Inject
@ -35,12 +35,12 @@ internal class DefaultMediaService @Inject constructor(
// Cache of extracted URLs
private val extractedUrlsCache = LruCache<String, List<String>>(1_000)
override fun extractUrls(event: TimelineEvent, forceExtract: Boolean): List<String> {
if (forceExtract) extractedUrlsCache.remove(event.root.cacheKey())
return extractedUrlsCache.getOrPut(event.root.cacheKey()) { urlsExtractor.extract(event) }
override fun extractUrls(event: TimelineEvent): List<String> {
return extractedUrlsCache.getOrPut(event.cacheKey()) { urlsExtractor.extract(event) }
}
private fun Event.cacheKey() = "${eventId ?: ""}-${roomId ?: ""}"
// Use the id of the latest Event edition
private fun TimelineEvent.cacheKey() = "${getLatestEventId()}-${root.roomId ?: ""}"
override suspend fun getRawPreviewUrl(url: String, timestamp: Long?): JsonDict {
return getRawPreviewUrlTask.execute(GetRawPreviewUrlTask.Params(url, timestamp))

44
vector/src/main/java/im/vector/app/features/home/room/detail/timeline/url/PreviewUrlRetriever.kt
View file

@ -24,12 +24,19 @@ import kotlinx.coroutines.launch
import org.matrix.android.sdk.api.cache.CacheStrategy
import org.matrix.android.sdk.api.session.Session
import org.matrix.android.sdk.api.session.room.timeline.TimelineEvent
import org.matrix.android.sdk.api.session.room.timeline.hasBeenEdited
import org.matrix.android.sdk.api.session.room.timeline.getLatestEventId
class PreviewUrlRetriever(session: Session) {
private val mediaService = session.mediaService()
private val data = mutableMapOf<String, PreviewUrlUiState>()
private data class EventIdPreviewUrlUiState(
// Id of the latest event in the case of an edited event, or the eventId for an event which has not been edited
val latestEventId: String,
val previewUrlUiState: PreviewUrlUiState
)
// Keys are the main eventId
private val data = mutableMapOf<String, EventIdPreviewUrlUiState>()
private val listeners = mutableMapOf<String, MutableSet<PreviewUrlRetrieverListener>>()
private val uiHandler = Handler(Looper.getMainLooper())
@ -38,19 +45,22 @@ class PreviewUrlRetriever(session: Session) {
fun getPreviewUrl(event: TimelineEvent, coroutineScope: CoroutineScope) {
val eventId = event.root.eventId ?: return
val latestEventId = event.getLatestEventId()
synchronized(data) {
val isEditedEvent = event.hasBeenEdited()
if (data[eventId] == null || isEditedEvent) {
val current = data[eventId]
if (current?.latestEventId != latestEventId) {
// The event is not known or it has been edited
// Keep only the first URL for the moment
val url = mediaService.extractUrls(event, forceExtract = isEditedEvent)
val url = mediaService.extractUrls(event)
.firstOrNull()
?.takeIf { it !in blockedUrl }
if (url == null) {
updateState(eventId, PreviewUrlUiState.NoUrl)
url
} else if (url != (data[eventId] as? PreviewUrlUiState.Data)?.url) {
updateState(eventId, PreviewUrlUiState.Loading)
updateState(eventId, latestEventId, PreviewUrlUiState.NoUrl)
null
} else if (url != (current?.previewUrlUiState as? PreviewUrlUiState.Data)?.url) {
// There is a not known URL, or the Event has been edited and the URL has changed
updateState(eventId, latestEventId, PreviewUrlUiState.Loading)
url
} else {
// Already handled
@ -73,15 +83,15 @@ class PreviewUrlRetriever(session: Session) {
synchronized(data) {
// Blocked after the request has been sent?
if (urlToRetrieve in blockedUrl) {
updateState(eventId, PreviewUrlUiState.NoUrl)
updateState(eventId, latestEventId, PreviewUrlUiState.NoUrl)
} else {
updateState(eventId, PreviewUrlUiState.Data(eventId, urlToRetrieve, it))
updateState(eventId, latestEventId, PreviewUrlUiState.Data(eventId, urlToRetrieve, it))
}
}
},
{
synchronized(data) {
updateState(eventId, PreviewUrlUiState.Error(it))
updateState(eventId, latestEventId, PreviewUrlUiState.Error(it))
}
}
)
@ -95,15 +105,15 @@ class PreviewUrlRetriever(session: Session) {
// Notify the listener
synchronized(data) {
data[eventId]
?.takeIf { it is PreviewUrlUiState.Data && it.url == url }
?.takeIf { it.previewUrlUiState is PreviewUrlUiState.Data && it.previewUrlUiState.url == url }
?.let {
updateState(eventId, PreviewUrlUiState.NoUrl)
updateState(eventId, it.latestEventId, PreviewUrlUiState.NoUrl)
}
}
}
private fun updateState(eventId: String, state: PreviewUrlUiState) {
data[eventId] = state
private fun updateState(eventId: String, latestEventId: String, state: PreviewUrlUiState) {
data[eventId] = EventIdPreviewUrlUiState(latestEventId, state)
// Notify the listener
uiHandler.post {
listeners[eventId].orEmpty().forEach {
@ -118,7 +128,7 @@ class PreviewUrlRetriever(session: Session) {
// Give the current state if any
synchronized(data) {
listener.onStateUpdated(data[key] ?: PreviewUrlUiState.Unknown)
listener.onStateUpdated(data[key]?.previewUrlUiState ?: PreviewUrlUiState.Unknown)
}
}