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Module contains external API of the evitaDB.
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/*
*
* _ _ ____ ____
* _____ _(_) |_ __ _| _ \| __ )
* / _ \ \ / / | __/ _` | | | | _ \
* | __/\ V /| | || (_| | |_| | |_) |
* \___| \_/ |_|\__\__,_|____/|____/
*
* Copyright (c) 2024
*
* Licensed under the Business Source License, Version 1.1 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://github.com/FgForrest/evitaDB/blob/master/LICENSE
*
* 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.
*/
package io.evitadb.api.observability.trace;
import org.slf4j.MDC;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.function.Supplier;
/**
* Context for tracing purposes. It offers a set of methods - each of those could be used as a wrapper that accepts
* a call metadata and a lambda function with logic to be traced.
*
* @author Tomáš Pozler, FG Forrest a.s. (c) 2024
*/
public interface TracingContext {
/**
* Name of property representing the client identifier in the {@link MDC}.
*/
String MDC_CLIENT_ID_PROPERTY = "clientId";
/**
* Name of property representing the trace identifier in the {@link MDC}.
*/
String MDC_TRACE_ID_PROPERTY = "traceId";
/**
* Returns a reference to currently active underlying context implementation.
* Mainly to pass the context to detached function call (usually in different thread).
*/
TracingContextReference getCurrentContext();
/**
* Sets the passed task name and attributes to the trace block and activates it. The block is then returned and
* client must handle its closing after client code is executed.
*/
@Nonnull
default TracingBlockReference createAndActivateBlock(@Nonnull String taskName, @Nullable SpanAttribute... attributes) {
return new DefaultTracingBlockReference();
}
/**
* Sets the passed task name and attributes to the trace block and activates it. The block is then returned and
* client must handle its closing after client code is executed. When the block is closed,
* the attributes will be set to the trace. The attributes may take advantage of the data computed in the lambda
* itself.
*/
@Nonnull
default TracingBlockReference createAndActivateBlock(@Nonnull String taskName, @Nullable Supplier attributes) {
return new DefaultTracingBlockReference();
}
/**
* Sets the passed task name to the trace block and activates it. The block is then returned and
* client must handle its closing after client code is executed.
*/
@Nonnull
default TracingBlockReference createAndActivateBlock(@Nonnull String taskName) {
return new DefaultTracingBlockReference();
}
/**
* Sets the passed task name and attributes to the trace BEFORE the lambda is executed. Within the method,
* the lambda with passed logic will be traced and properly executed.
*/
void executeWithinBlock(@Nonnull String taskName, @Nonnull Runnable runnable, @Nullable SpanAttribute... attributes);
/**
* Sets the passed task name and attributes to the trace BEFORE the lambda is executed. Within the method,
* the lambda with passed logic will be traced and properly executed.
*/
T executeWithinBlock(@Nonnull String taskName, @Nonnull Supplier lambda, @Nullable SpanAttribute... attributes);
/**
* Sets the passed task name and attributes to the trace AFTER the lambda is executed. Within the method,
* the lambda with passed logic will be traced and properly executed. After the method successfully finishes,
* the attributes will be set to the trace. The attributes may take advantage of the data computed in the lambda
* itself.
*/
void executeWithinBlock(@Nonnull String taskName, @Nonnull Runnable runnable, @Nullable Supplier attributes);
/**
* Sets the passed task name and attributes to the trace AFTER the lambda is executed. Within the method,
* the lambda with passed logic will be traced and properly executed. After the method successfully finishes,
* the attributes will be set to the trace. The attributes may take advantage of the data computed in the lambda
* itself.
*/
T executeWithinBlock(@Nonnull String taskName, @Nonnull Supplier lambda, @Nullable Supplier attributes);
/**
* Sets the passed task name to the trace. Within the method, the lambda with passed logic will be
* traced and properly executed.
*/
void executeWithinBlock(@Nonnull String taskName, @Nonnull Runnable runnable);
/**
* Sets the passed task name to the trace. Within the method, the lambda with passed logic will be
* traced and properly executed.
*/
default T executeWithinBlock(@Nonnull String taskName, @Nonnull Supplier lambda) {
return lambda.get();
}
/**
* Sets the passed task name and attributes to the trace block and activates it. The block is then returned and
* client must handle its closing after client code is executed.
*/
@Nonnull
default TracingBlockReference createAndActivateBlockWithParentContext(@Nonnull TracingContextReference contextHolderToUse, @Nonnull String taskName, @Nullable SpanAttribute... attributes) {
return new DefaultTracingBlockReference();
}
/**
* Sets the passed task name and attributes to the trace block and activates it. The block is then returned and
* client must handle its closing after client code is executed. When the block is closed,
* the attributes will be set to the trace. The attributes may take advantage of the data computed in the lambda
* itself.
*/
@Nonnull
default TracingBlockReference createAndActivateBlockWithParentContext(@Nonnull TracingContextReference contextHolderToUse, @Nonnull String taskName, @Nullable Supplier attributes) {
return new DefaultTracingBlockReference();
}
/**
* Sets the passed task name and attributes to the trace block and activates it. The block is then returned and
* client must handle its closing after client code is executed.
*/
@Nonnull
default TracingBlockReference createAndActivateBlockWithParentContext(@Nonnull TracingContextReference contextHolderToUse, @Nonnull String taskName) {
return new DefaultTracingBlockReference();
}
/**
* Sets the passed task name and attributes to the trace BEFORE the lambda is executed. Within the method,
* the lambda with passed logic will be traced and properly executed.
*/
void executeWithinBlockWithParentContext(@Nonnull TracingContextReference contextHolderToUse, @Nonnull String taskName, @Nonnull Runnable runnable, @Nullable SpanAttribute... attributes);
/**
* Sets the passed task name and attributes to the trace BEFORE the lambda is executed. Within the method,
* the lambda with passed logic will be traced and properly executed.
*/
T executeWithinBlockWithParentContext(@Nonnull TracingContextReference contextHolderToUse, @Nonnull String taskName, @Nonnull Supplier lambda, @Nullable SpanAttribute... attributes);
/**
* Sets the passed task name and attributes to the trace AFTER the lambda is executed. Within the method,
* the lambda with passed logic will be traced and properly executed. After the method successfully finishes,
* the attributes will be set to the trace. The attributes may take advantage of the data computed in the lambda
* itself.
*/
void executeWithinBlockWithParentContext(@Nonnull TracingContextReference contextHolderToUse, @Nonnull String taskName, @Nonnull Runnable runnable, @Nullable Supplier attributes);
/**
* Sets the passed task name and attributes to the trace AFTER the lambda is executed. Within the method,
* the lambda with passed logic will be traced and properly executed. After the method successfully finishes,
* the attributes will be set to the trace. The attributes may take advantage of the data computed in the lambda
* itself.
*/
T executeWithinBlockWithParentContext(@Nonnull TracingContextReference contextHolderToUse, @Nonnull String taskName, @Nonnull Supplier lambda, @Nullable Supplier attributes);
/**
* Sets the passed task name to the trace. Within the method, the lambda with passed logic will be
* traced and properly executed.
*/
void executeWithinBlockWithParentContext(@Nonnull TracingContextReference contextHolderToUse, @Nonnull String taskName, @Nonnull Runnable runnable);
/**
* Sets the passed task name to the trace. Within the method, the lambda with passed logic will be
* traced and properly executed.
*/
default T executeWithinBlockWithParentContext(@Nonnull TracingContextReference contextHolderToUse, @Nonnull String taskName, @Nonnull Supplier lambda) {
return lambda.get();
}
/**
* Sets the passed task name and attributes to the trace block and activates it. The block is then returned and
* client must handle its closing after client code is executed.
*/
@Nullable
default TracingBlockReference createAndActivateBlockIfParentContextAvailable(@Nonnull String taskName, @Nullable SpanAttribute... attributes) {
return null;
}
/**
* Sets the passed task name and attributes to the trace block and activates it. The block is then returned and
* client must handle its closing after client code is executed. When the block is closed,
* the attributes will be set to the trace. The attributes may take advantage of the data computed in the lambda
* itself.
*/
@Nullable
default TracingBlockReference createAndActivateBlockIfParentContextAvailable(@Nonnull String taskName, @Nullable Supplier attributes) {
return null;
}
/**
* Sets the passed task name and attributes to the trace block and activates it. The block is then returned and
* client must handle its closing after client code is executed.
*/
@Nullable
default TracingBlockReference createAndActivateBlockIfParentContextAvailable(@Nonnull String taskName) {
return null;
}
/**
* Sets the passed task name and attributes to the trace BEFORE the lambda is executed. Within the method,
* the lambda with passed logic will be traced and properly executed.
*/
void executeWithinBlockIfParentContextAvailable(@Nonnull String taskName, @Nonnull Runnable runnable, @Nullable SpanAttribute... attributes);
/**
* Sets the passed task name and attributes to the trace BEFORE the lambda is executed. Within the method,
* the lambda with passed logic will be traced and properly executed.
*/
T executeWithinBlockIfParentContextAvailable(@Nonnull String taskName, @Nonnull Supplier lambda, @Nullable SpanAttribute... attributes);
/**
* Sets the passed task name and attributes to the trace AFTER the lambda is executed. Within the method,
* the lambda with passed logic will be traced and properly executed. After the method successfully finishes,
* the attributes will be set to the trace. The attributes may take advantage of the data computed in the lambda
* itself.
*/
void executeWithinBlockIfParentContextAvailable(@Nonnull String taskName, @Nonnull Runnable runnable, @Nullable Supplier attributes);
/**
* Sets the passed task name and attributes to the trace AFTER the lambda is executed. Within the method,
* the lambda with passed logic will be traced and properly executed. After the method successfully finishes,
* the attributes will be set to the trace. The attributes may take advantage of the data computed in the lambda
* itself.
*/
T executeWithinBlockIfParentContextAvailable(@Nonnull String taskName, @Nonnull Supplier lambda, @Nullable Supplier attributes);
/**
* Sets the passed task name to the trace. Within the method, the lambda with passed logic will be
* traced and properly executed.
*/
void executeWithinBlockIfParentContextAvailable(@Nonnull String taskName, @Nonnull Runnable runnable);
/**
* Sets the passed task name to the trace. Within the method, the lambda with passed logic will be
* traced and properly executed.
*/
default T executeWithinBlockIfParentContextAvailable(@Nonnull String taskName, @Nonnull Supplier lambda) {
return lambda.get();
}
/**
* Represents a key-value pair of an attribute in a span.
*
* @param key the key of the attribute
* @param value the value of the attribute (only primitive types and Strings are allowed)
*/
record SpanAttribute(
@Nonnull String key,
@Nullable Object value
) {}
}