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[Preview] Change Feed Processor: Refactors manual checkpoint API #2488

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merged 21 commits into from
Jun 3, 2021
Merged

[Preview] Change Feed Processor: Refactors manual checkpoint API #2488

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Refactoring contract
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conditional
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Merge branch 'master' into users/ealsur/checkpointreview
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more tests
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10 changes: 10 additions & 0 deletions Microsoft.Azure.Cosmos.Encryption/src/Custom/EncryptionContainer.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -931,7 +931,12 @@ public override ChangeFeedProcessorBuilder GetChangeFeedProcessorBuilderWithManu
async (
ChangeFeedProcessorContext context,
IReadOnlyCollection<JObject> documents,
#if SDKPROJECTREF
Func<Task> tryCheckpointAsync,
#else
// Remove on next release
Func<Task<(bool isSuccess, Exception error)>> tryCheckpointAsync,
#endif
CancellationToken cancellationToken) =>
{
List<T> decryptItems = await this.DecryptChangeFeedDocumentsAsync<T>(
Expand Down Expand Up @@ -973,7 +978,12 @@ public override ChangeFeedProcessorBuilder GetChangeFeedProcessorBuilderWithManu
async (
ChangeFeedProcessorContext context,
Stream changes,
#if SDKPROJECTREF
Func<Task> tryCheckpointAsync,
#else
// Remove on next release
Func<Task<(bool isSuccess, Exception error)>> tryCheckpointAsync,
#endif
CancellationToken cancellationToken) =>
{
Stream decryptedChanges = await EncryptionProcessor.DeserializeAndDecryptResponseAsync(
Expand Down
10 changes: 10 additions & 0 deletions Microsoft.Azure.Cosmos.Encryption/src/EncryptionContainer.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -789,7 +789,12 @@ public override ChangeFeedProcessorBuilder GetChangeFeedProcessorBuilderWithManu
async (
ChangeFeedProcessorContext context,
IReadOnlyCollection<JObject> documents,
#if SDKPROJECTREF
Func<Task> tryCheckpointAsync,
#else
// Remove on next release
Func<Task<(bool isSuccess, Exception error)>> tryCheckpointAsync,
#endif
CancellationToken cancellationToken) =>
{
List<T> decryptedItems = await this.DecryptChangeFeedDocumentsAsync<T>(
Expand Down Expand Up @@ -835,7 +840,12 @@ public override ChangeFeedProcessorBuilder GetChangeFeedProcessorBuilderWithManu
async (
ChangeFeedProcessorContext context,
Stream changes,
#if SDKPROJECTREF
Func<Task> tryCheckpointAsync,
#else
// Remove on next release
Func<Task<(bool isSuccess, Exception error)>> tryCheckpointAsync,
#endif
CancellationToken cancellationToken) =>
{
EncryptionSettings encryptionSettings = await this.GetOrUpdateEncryptionSettingsFromCacheAsync(
Expand Down
3 changes: 3 additions & 0 deletions Microsoft.Azure.Cosmos.Encryption/src/Microsoft.Azure.Cosmos.Encryption.csproj
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Original file line number Diff line number Diff line change
Expand Up @@ -67,4 +67,7 @@
<AssemblyOriginatorKeyFile>..\..\35MSSharedLib1024.snk</AssemblyOriginatorKeyFile>
</PropertyGroup>

<PropertyGroup Condition=" '$(SdkProjectRef)' == 'True' ">
<DefineConstants>$(DefineConstants);SDKPROJECTREF</DefineConstants>
</PropertyGroup>
</Project>
10 changes: 10 additions & 0 deletions Microsoft.Azure.Cosmos.Encryption/tests/EmulatorTests/MdeCustomEncryptionTests.cs
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Expand Up @@ -1271,7 +1271,12 @@ private async Task ValidateChangeFeedProcessorWithManualCheckpointResponse(
(
ChangeFeedProcessorContext context,
IReadOnlyCollection<TestDoc> changes,
#if SDKPROJECTREF
Func<Task> tryCheckpointAsync,
#else
// Remove on next release
Func<Task<(bool isSuccess, Exception error)>> tryCheckpointAsync,
#endif
CancellationToken cancellationToken) =>
{
changeFeedReturnedDocs.AddRange(changes);
Expand Down Expand Up @@ -1375,7 +1380,12 @@ private async Task ValidateChangeFeedProcessorStreamWithManualCheckpointResponse
(
ChangeFeedProcessorContext context,
Stream changes,
#if SDKPROJECTREF
Func<Task> tryCheckpointAsync,
#else
// Remove on next release
Func<Task<(bool isSuccess, Exception error)>> tryCheckpointAsync,
#endif
CancellationToken cancellationToken) =>
{
string changeFeed = string.Empty;
Expand Down
10 changes: 10 additions & 0 deletions Microsoft.Azure.Cosmos.Encryption/tests/EmulatorTests/MdeEncryptionTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -2042,7 +2042,12 @@ private async Task ValidateChangeFeedProcessorWithManualCheckpointResponse(
(
ChangeFeedProcessorContext context,
IReadOnlyCollection<TestDoc> changes,
#if SDKPROJECTREF
Func<Task> tryCheckpointAsync,
#else
// Remove on next release
Func<Task<(bool isSuccess, Exception error)>> tryCheckpointAsync,
#endif
CancellationToken cancellationToken) =>
{
changeFeedReturnedDocs.AddRange(changes);
Expand Down Expand Up @@ -2146,7 +2151,12 @@ private async Task ValidateChangeFeedProcessorStreamWithManualCheckpointResponse
(
ChangeFeedProcessorContext context,
Stream changes,
#if SDKPROJECTREF
Func<Task> tryCheckpointAsync,
#else
// Remove on next release
Func<Task<(bool isSuccess, Exception error)>> tryCheckpointAsync,
#endif
CancellationToken cancellationToken) =>
{
string changeFeed = string.Empty;
Expand Down
4 changes: 4 additions & 0 deletions ...mos.Encryption/tests/EmulatorTests/Microsoft.Azure.Cosmos.Encryption.EmulatorTests.csproj
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Original file line number Diff line number Diff line change
Expand Up @@ -65,4 +65,8 @@
<PlatformTarget>x64</PlatformTarget>
<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
</PropertyGroup>

<PropertyGroup Condition=" '$(SdkProjectRef)' == 'True' ">
<DefineConstants>$(DefineConstants);SDKPROJECTREF</DefineConstants>
</PropertyGroup>
</Project>
6 changes: 1 addition & 5 deletions Microsoft.Azure.Cosmos/src/ChangeFeedProcessor/Observers/AutoCheckpointer.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -35,11 +35,7 @@ public override async Task ProcessChangesAsync(
{
await this.observer.ProcessChangesAsync(context, stream, cancellationToken).ConfigureAwait(false);

(bool isSuccess, Exception exception) = await context.TryCheckpointAsync();
if (!isSuccess)
{
throw exception;
}
await context.CheckpointAsync();
}
}
}
9 changes: 2 additions & 7 deletions Microsoft.Azure.Cosmos/src/ChangeFeedProcessor/Observers/ChangeFeedObserverContextCore.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -37,12 +37,11 @@ internal ChangeFeedObserverContextCore(

public Headers Headers => this.responseMessage.Headers;

public async Task<(bool isSuccess, Exception error)> TryCheckpointAsync()
public async Task CheckpointAsync()
{
try
{
await this.checkpointer.CheckpointPartitionAsync(this.responseMessage.Headers.ContinuationToken);
return (isSuccess: true, error: null);
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}
catch (LeaseLostException leaseLostException)
{
Expand All @@ -55,11 +54,7 @@ internal ChangeFeedObserverContextCore(
trace: NoOpTrace.Singleton,
error: null,
innerException: leaseLostException);
return (isSuccess: false, error: cosmosException);
}
catch (Exception exception)
{
return (isSuccess: false, error: exception);
throw cosmosException;
}
}

Expand Down
4 changes: 2 additions & 2 deletions Microsoft.Azure.Cosmos/src/ChangeFeedProcessor/Observers/ChangeFeedObserverFactoryCore.cs
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Expand Up @@ -43,7 +43,7 @@ private Task ChangesStreamHandlerAsync(
return this.onChanges(context, stream, cancellationToken);
}

return this.onChangesWithManualCheckpoint(context, stream, context.TryCheckpointAsync, cancellationToken);
return this.onChangesWithManualCheckpoint(context, stream, context.CheckpointAsync, cancellationToken);
}
}

Expand Down Expand Up @@ -108,7 +108,7 @@ private Task ChangesStreamHandlerAsync(
return this.onChanges(context, changes, cancellationToken);
}

return this.onChangesWithManualCheckpoint(context, changes, context.TryCheckpointAsync, cancellationToken);
return this.onChangesWithManualCheckpoint(context, changes, context.CheckpointAsync, cancellationToken);
}

private IReadOnlyCollection<T> AsIReadOnlyCollection(Stream stream)
Expand Down
26 changes: 8 additions & 18 deletions Microsoft.Azure.Cosmos/src/Resource/Container/Container.cs
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Expand Up @@ -1482,31 +1482,26 @@ public delegate Task ChangeFeedHandler<T>(
/// </summary>
/// <param name="context">The context related to the changes.</param>
/// <param name="changes">The changes that happened.</param>
/// <param name="tryCheckpointAsync">A task representing an asynchronous checkpoint on the progress of a lease.</param>
/// <param name="checkpointAsync">A task representing an asynchronous checkpoint on the progress of a lease.</param>
/// <param name="cancellationToken">A cancellation token representing the current cancellation status of the <see cref="ChangeFeedProcessor"/> instance.</param>
/// <returns>A <see cref="Task"/> representing the asynchronous operation that is going to be done with the changes.</returns>
/// <example>
/// <code language="c#">
/// <![CDATA[
/// (ChangeFeedProcessorContext context, IReadOnlyCollection<T> changes, Func<Task<(bool isSuccess, CosmosException error)>> tryCheckpointAsync, CancellationToken cancellationToken) =>
/// (ChangeFeedProcessorContext context, IReadOnlyCollection<T> changes, Func<Task> checkpointAsync, CancellationToken cancellationToken) =>
/// {
/// // consume changes
///
/// // On certain condition, we can checkpoint
/// (bool isSuccess, Exception error) checkpointResult = await tryCheckpointAsync();
/// if (!isSuccess)
/// {
/// // log error, could not checkpoint
/// throw error;
/// }
/// await checkpointAsync();
/// }
/// ]]>
/// </code>
/// </example>
public delegate Task ChangeFeedHandlerWithManualCheckpoint<T>(
ChangeFeedProcessorContext context,
IReadOnlyCollection<T> changes,
Func<Task<(bool isSuccess, Exception error)>> tryCheckpointAsync,
Func<Task> checkpointAsync,
CancellationToken cancellationToken);

/// <summary>
Expand All @@ -1526,31 +1521,26 @@ public delegate Task ChangeFeedStreamHandler(
/// </summary>
/// <param name="context">The context related to the changes.</param>
/// <param name="changes">The changes that happened.</param>
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Should this be something a little more obvious like changesPayload?

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Well, in this case, it is actually the list (IReadOnlyCollection<T>) of changes that happened. Those changes in the collection could be inserts or updates, but they are still changes. Not sure how the word payload makes it more clear?

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Also, the current API that is GA uses changes as name, so I rather keep the same as we have no feedback that indicates the name brings confusion?

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Then it's fine. It just seemed a little off that a stream would be called changes.

/// <param name="tryCheckpointAsync">A task representing an asynchronous checkpoint on the progress of a lease.</param>
/// <param name="checkpointAsync">A task representing an asynchronous checkpoint on the progress of a lease.</param>
/// <param name="cancellationToken">A cancellation token representing the current cancellation status of the <see cref="ChangeFeedProcessor"/> instance.</param>
/// <returns>A <see cref="Task"/> representing the asynchronous operation that is going to be done with the changes.</returns>
/// <example>
/// <code language="c#">
/// <![CDATA[
/// (ChangeFeedProcessorContext context, Stream stream, Func<Task<(bool isSuccess, CosmosException error)>> tryCheckpointAsync, CancellationToken cancellationToken) =>
/// (ChangeFeedProcessorContext context, Stream stream, Func<Task> checkpointAsync, CancellationToken cancellationToken) =>
/// {
/// // consume stream
///
/// // On certain condition, we can checkpoint
/// (bool isSuccess, Exception error) checkpointResult = await tryCheckpointAsync();
/// if (!isSuccess)
/// {
/// // log error, could not checkpoint
/// throw error;
/// }
/// await checkpointAsync();
/// }
/// ]]>
/// </code>
/// </example>
public delegate Task ChangeFeedStreamHandlerWithManualCheckpoint(
ChangeFeedProcessorContext context,
Stream changes,
Func<Task<(bool isSuccess, Exception error)>> tryCheckpointAsync,
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Func<Task> checkpointAsync,
CancellationToken cancellationToken);

/// <summary>
Expand Down
4 changes: 2 additions & 2 deletions Microsoft.Azure.Cosmos/src/Resource/Container/ContainerInternal.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -183,7 +183,7 @@ public delegate Task ChangeFeedHandler<T>(
public delegate Task ChangeFeedHandlerWithManualCheckpoint<T>(
ChangeFeedProcessorContext context,
IReadOnlyCollection<T> changes,
Func<Task<(bool isSuccess, Exception error)>> tryCheckpointAsync,
Func<Task> checkpointAsync,
CancellationToken cancellationToken);

public delegate Task ChangeFeedStreamHandler(
Expand All @@ -194,7 +194,7 @@ public delegate Task ChangeFeedStreamHandler(
public delegate Task ChangeFeedStreamHandlerWithManualCheckpoint(
ChangeFeedProcessorContext context,
Stream changes,
Func<Task<(bool isSuccess, Exception error)>> tryCheckpointAsync,
Func<Task> checkpointAsync,
CancellationToken cancellationToken);

public abstract ChangeFeedProcessorBuilder GetChangeFeedProcessorBuilder<T>(
Expand Down
6 changes: 2 additions & 4 deletions ....Azure.Cosmos/tests/Microsoft.Azure.Cosmos.EmulatorTests/ChangeFeed/DynamicStreamTests.cs
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Expand Up @@ -93,7 +93,7 @@ public async Task TestWithRunningProcessor_WithManualCheckpoint()
int processedDocCount = 0;
string accumulator = string.Empty;
ChangeFeedProcessor processor = this.Container
.GetChangeFeedProcessorBuilderWithManualCheckpoint("test", async (ChangeFeedProcessorContext context, Stream stream, Func<Task<(bool isSuccess, Exception error)>> tryCheckpointAsync, CancellationToken token) =>
.GetChangeFeedProcessorBuilderWithManualCheckpoint("test", async (ChangeFeedProcessorContext context, Stream stream, Func<Task> checkpointAsync, CancellationToken token) =>
{
this.ValidateContext(context);

Expand All @@ -113,9 +113,7 @@ public async Task TestWithRunningProcessor_WithManualCheckpoint()
if (processedDocCount == 1)
{
// Checkpointing on the first document to be able to have a point to rollback to
(bool isSuccess, Exception exception) = await tryCheckpointAsync();
Assert.IsTrue(isSuccess);
Assert.IsNull(exception);
await checkpointAsync();
}

if (processedDocCount == 12)
Expand Down
6 changes: 2 additions & 4 deletions Microsoft.Azure.Cosmos/tests/Microsoft.Azure.Cosmos.EmulatorTests/ChangeFeed/DynamicTests.cs
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Expand Up @@ -89,7 +89,7 @@ public async Task TestWithRunningProcessor_WithManualCheckpoint()
int processedDocCount = 0;
string accumulator = string.Empty;
ChangeFeedProcessor processor = this.Container
.GetChangeFeedProcessorBuilderWithManualCheckpoint("test", async (ChangeFeedProcessorContext context, IReadOnlyCollection<dynamic> docs, Func<Task<(bool isSuccess, Exception error)>> tryCheckpointAsync, CancellationToken token) =>
.GetChangeFeedProcessorBuilderWithManualCheckpoint("test", async (ChangeFeedProcessorContext context, IReadOnlyCollection<dynamic> docs, Func<Task> checkpointAsync, CancellationToken token) =>
{
this.ValidateContext(context);
processedDocCount += docs.Count();
Expand All @@ -106,9 +106,7 @@ public async Task TestWithRunningProcessor_WithManualCheckpoint()

if (processedDocCount == 1) {
// Checkpointing on the first document to be able to have a point to rollback to
(bool isSuccess, Exception exception) = await tryCheckpointAsync();
Assert.IsTrue(isSuccess);
Assert.IsNull(exception);
await checkpointAsync();
}

if (processedDocCount == 12)
Expand Down
18 changes: 5 additions & 13 deletions ...osmos/tests/Microsoft.Azure.Cosmos.Tests/ChangeFeed/ChangeFeedObserverContextCoreTests.cs
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Expand Up @@ -42,9 +42,7 @@ public async Task TryCheckpoint_OnSuccess()
checkpointer.Setup(c => c.CheckpointPartitionAsync(It.Is<string>(s => s == continuation))).Returns(Task.CompletedTask);
ChangeFeedObserverContextCore changeFeedObserverContextCore = new ChangeFeedObserverContextCore(leaseToken, responseMessage, checkpointer.Object);

(bool isSuccess, Exception exception) = await changeFeedObserverContextCore.TryCheckpointAsync();
Assert.IsTrue(isSuccess);
Assert.IsNull(exception);
await changeFeedObserverContextCore.CheckpointAsync();
}

[TestMethod]
Expand All @@ -58,10 +56,8 @@ public async Task TryCheckpoint_OnLeaseLost()
checkpointer.Setup(c => c.CheckpointPartitionAsync(It.Is<string>(s => s == continuation))).ThrowsAsync(new LeaseLostException());
ChangeFeedObserverContextCore changeFeedObserverContextCore = new ChangeFeedObserverContextCore(leaseToken, responseMessage, checkpointer.Object);

(bool isSuccess, Exception exception) = await changeFeedObserverContextCore.TryCheckpointAsync();
Assert.IsFalse(isSuccess);
Assert.IsNotNull(exception);
Assert.AreEqual(HttpStatusCode.PreconditionFailed, (exception as CosmosException).StatusCode);
CosmosException exception = await Assert.ThrowsExceptionAsync<CosmosException>(() => changeFeedObserverContextCore.CheckpointAsync());
Assert.AreEqual(HttpStatusCode.PreconditionFailed, exception.StatusCode);
}

[TestMethod]
Expand All @@ -76,9 +72,7 @@ public async Task TryCheckpoint_OnCosmosException()
checkpointer.Setup(c => c.CheckpointPartitionAsync(It.Is<string>(s => s == continuation))).ThrowsAsync(cosmosException);
ChangeFeedObserverContextCore changeFeedObserverContextCore = new ChangeFeedObserverContextCore(leaseToken, responseMessage, checkpointer.Object);

(bool isSuccess, Exception exception) = await changeFeedObserverContextCore.TryCheckpointAsync();
Assert.IsFalse(isSuccess);
Assert.IsNotNull(exception);
CosmosException exception = await Assert.ThrowsExceptionAsync<CosmosException>(() => changeFeedObserverContextCore.CheckpointAsync());
Assert.ReferenceEquals(cosmosException, exception);
}

Expand All @@ -94,9 +88,7 @@ public async Task TryCheckpoint_OnUnknownException()
checkpointer.Setup(c => c.CheckpointPartitionAsync(It.Is<string>(s => s == continuation))).ThrowsAsync(cosmosException);
ChangeFeedObserverContextCore changeFeedObserverContextCore = new ChangeFeedObserverContextCore(leaseToken, responseMessage, checkpointer.Object);

(bool isSuccess, Exception exception) = await changeFeedObserverContextCore.TryCheckpointAsync();
Assert.IsFalse(isSuccess);
Assert.IsNotNull(exception);
NotImplementedException exception = await Assert.ThrowsExceptionAsync<NotImplementedException>(() => changeFeedObserverContextCore.CheckpointAsync());
Assert.ReferenceEquals(cosmosException, exception);
}
}
Expand Down
4 changes: 2 additions & 2 deletions ...osmos/tests/Microsoft.Azure.Cosmos.Tests/ChangeFeed/ChangeFeedObserverFactoryCoreTests.cs
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Expand Up @@ -77,7 +77,7 @@ Task changesHandler(ChangeFeedProcessorContext context, IReadOnlyCollection<dyna
public async Task WhenDelegateIsTyped_Manual()
{
bool executed = false;
Task changesHandler(ChangeFeedProcessorContext context, IReadOnlyCollection<dynamic> docs, Func<Task<(bool isSuccess, Exception exception)>> tryCheckpointAsync, CancellationToken token)
Task changesHandler(ChangeFeedProcessorContext context, IReadOnlyCollection<dynamic> docs, Func<Task> checkpointAsync, CancellationToken token)
{
Assert.AreEqual(1, docs.Count);
Assert.AreEqual("Test", docs.First().id.ToString());
Expand Down Expand Up @@ -128,7 +128,7 @@ public async Task WhenDelegateIsStream_Manual()
{
ResponseMessage responseMessage = this.BuildResponseMessage();
bool executed = false;
Task changesHandler(ChangeFeedProcessorContext context, Stream stream, Func<Task<(bool isSuccess, Exception exception)>> tryCheckpointAsync, CancellationToken token)
Task changesHandler(ChangeFeedProcessorContext context, Stream stream, Func<Task> checkpointAsync, CancellationToken token)
{
Assert.ReferenceEquals(responseMessage.Content, stream);
executed = true;
Expand Down
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