tmf.core: Add data fetching capabilities to data providers

Introduce a new interface ITmfDataProviderConfigurationDataFetcher and
model class TmfDataProviderConfigurationDataModel to allow data providers
to fetch and return custom data based on provider configuration.

[Added] Infrastructure of fetching a data provider configuration's data

Signed-off-by: Kaveh Shahedi <kaveh.shahedi@ericsson.com>

Author: kavehshahedi

tmf/org.eclipse.tracecompass.tmf.core/META-INF/MANIFEST.MF

@@ -18,7 +18,8 @@ Require-Bundle: org.eclipse.core.runtime,
  org.eclipse.tracecompass.tmf.filter.parser,
  org.eclipse.jdt.annotation;bundle-version="[2.0.0,3.0.0)";resolution:=optional,
  org.apache.commons.lang3
-Export-Package: org.eclipse.tracecompass.internal.provisional.tmf.core.model,
+Export-Package: org.eclipse.tracecompass.internal.provisional.tmf.core.dataprovider;x-internal:=true,
+ org.eclipse.tracecompass.internal.provisional.tmf.core.model,
  org.eclipse.tracecompass.internal.provisional.tmf.core.model.events;x-friends:="org.eclipse.tracecompass.tmf.core.tests,org.eclipse.tracecompass.analysis.timing.core.tests",
  org.eclipse.tracecompass.internal.provisional.tmf.core.model.filter.parser;x-friends:="org.eclipse.tracecompass.tmf.ui,org.eclipse.tracecompass.tmf.core.tests",
  org.eclipse.tracecompass.internal.provisional.tmf.core.model.filters;

tmf/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/internal/provisional/tmf/core/dataprovider/ITmfDataProviderDataFetcher.java

@@ -0,0 +1,39 @@
+/*******************************************************************************
+ * Copyright (c) 2025 Ericsson
+ *
+ * All rights reserved. This program and the accompanying materials are
+ * made available under the terms of the Eclipse Public License 2.0 which
+ * accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *******************************************************************************/
+package org.eclipse.tracecompass.internal.provisional.tmf.core.dataprovider;
+
+import org.eclipse.tracecompass.tmf.core.dataprovider.IDataProviderDescriptor;
+import org.eclipse.tracecompass.tmf.core.response.TmfModelResponse;
+import org.eclipse.tracecompass.tmf.core.trace.ITmfTrace;
+
+/**
+ * Interface for data providers that can fetch custom data based on the provider.
+ * Data providers that need to return specialized data types (images, reports, etc.)
+ * can implement this interface and define the data fetching logic.
+ *
+ * @author Kaveh Shahedi
+ * @since 10.3
+ */
+public interface ITmfDataProviderDataFetcher {
+
+    /**
+     * Get the data for a specific trace and data provider.
+     *
+     * @param trace
+     *            The trace to get the data for
+     * @param descriptor
+     *            The descriptor of the data provider
+     * @return The report data
+     * @throws Exception
+     *             If the data cannot be retrieved
+     */
+    TmfModelResponse<TmfDataProviderDataModel<?>> getData(ITmfTrace trace, IDataProviderDescriptor descriptor) throws Exception;
+}

tmf/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/internal/provisional/tmf/core/dataprovider/TmfDataProviderDataModel.java

@@ -0,0 +1,74 @@
+/*******************************************************************************
+ * Copyright (c) 2025 Ericsson
+ *
+ * All rights reserved. This program and the accompanying materials are
+ * made available under the terms of the Eclipse Public License 2.0 which
+ * accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *******************************************************************************/
+package org.eclipse.tracecompass.internal.provisional.tmf.core.dataprovider;
+
+/**
+ * Data model for the data provider configuration data. This class is used to
+ * hold the data that is returned by the data provider configuration.
+ *
+ * @author Kaveh Shahedi
+ *
+ * @param <T> Type of the content
+ */
+public class TmfDataProviderDataModel<T> {
+
+    private T fContent;
+    private String fContentType;
+    private String fContentName;
+
+    /**
+     * Constructor
+     *
+     * @param content
+     *            The content of the data model
+     * @param contentType
+     *            The type of the content
+     * @param contentName
+     *            The name of the content
+     */
+    public TmfDataProviderDataModel(T content, String contentType, String contentName) {
+        fContent = content;
+        fContentType = contentType;
+        fContentName = contentName;
+    }
+
+    /**
+     * Get the content of the data model.
+     * The content type is Object as it can be anything (e.g. image, report, etc.)
+     *
+     * @return The content of the data model
+     */
+    public T getContent() {
+        return fContent;
+    }
+
+    /**
+     * Get the type of the content.
+     * This is used to identify the type of content that is returned by,
+     * for instance, MIME type (e.g., application/octet-stream for binary data).
+     *
+     * @return The type of the content
+     */
+    public String getContentType() {
+        return fContentType;
+    }
+
+    /**
+     * Get the name of the content.
+     * This is used to identify the name the content if required,
+     * as it could be saved to a file.
+     *
+     * @return The name of the content
+     */
+    public String getContentName() {
+        return fContentName;
+    }
+}