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‎articles/ai-foundry/agents/how-to/tools/function-calling.md

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```
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::: zone-end
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::: zone pivot="java"
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```java
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package com.example.agents;
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import com.azure.ai.agents.persistent.MessagesClient;
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import com.azure.ai.agents.persistent.PersistentAgentsAdministrationClient;
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import com.azure.ai.agents.persistent.PersistentAgentsClient;
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import com.azure.ai.agents.persistent.PersistentAgentsClientBuilder;
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import com.azure.ai.agents.persistent.RunsClient;
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import com.azure.ai.agents.persistent.ThreadsClient;
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import com.azure.ai.agents.persistent.models.CreateAgentOptions;
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import com.azure.ai.agents.persistent.models.CreateRunOptions;
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import com.azure.ai.agents.persistent.models.FunctionDefinition;
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import com.azure.ai.agents.persistent.models.FunctionToolDefinition;
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import com.azure.ai.agents.persistent.models.MessageImageFileContent;
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import com.azure.ai.agents.persistent.models.MessageRole;
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import com.azure.ai.agents.persistent.models.MessageTextContent;
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import com.azure.ai.agents.persistent.models.PersistentAgent;
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import com.azure.ai.agents.persistent.models.PersistentAgentThread;
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import com.azure.ai.agents.persistent.models.RequiredFunctionToolCall;
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import com.azure.ai.agents.persistent.models.RequiredToolCall;
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import com.azure.ai.agents.persistent.models.RunStatus;
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import com.azure.ai.agents.persistent.models.SubmitToolOutputsAction;
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import com.azure.ai.agents.persistent.models.ThreadMessage;
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import com.azure.ai.agents.persistent.models.ThreadRun;
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import com.azure.ai.agents.persistent.models.ToolOutput;
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import com.azure.ai.agents.persistent.models.MessageContent;
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import com.azure.core.http.rest.PagedIterable;
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import com.azure.core.util.BinaryData;
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import com.azure.identity.DefaultAzureCredentialBuilder;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.databind.JsonNode;
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import com.fasterxml.jackson.databind.json.JsonMapper;
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import java.net.URL;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.net.URISyntaxException;
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import java.nio.file.Path;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.function.Function;
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public class AgentExample {
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public static void main(String[] args) throws FileNotFoundException, URISyntaxException {
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// variables for authenticating requests to the agent service
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String projectEndpoint = "https://aahi-may-resource.services.ai.azure.com/api/projects/aahi-may";//System.getenv("PROJECT_ENDPOINT");
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String modelName = "gpt-4o";//System.getenv("MODEL_DEPLOYMENT_NAME");
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PersistentAgentsClientBuilder clientBuilder = new PersistentAgentsClientBuilder().endpoint(projectEndpoint)
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.credential(new DefaultAzureCredentialBuilder().build());
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PersistentAgentsClient agentsClient = clientBuilder.buildClient();
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PersistentAgentsAdministrationClient administrationClient = agentsClient.getPersistentAgentsAdministrationClient();
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ThreadsClient threadsClient = agentsClient.getThreadsClient();
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MessagesClient messagesClient = agentsClient.getMessagesClient();
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RunsClient runsClient = agentsClient.getRunsClient();
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Supplier<String> getUserFavoriteCity = () -> "Seattle, WA";
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FunctionToolDefinition getUserFavoriteCityTool = new FunctionToolDefinition(
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new FunctionDefinition(
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"getUserFavoriteCity",
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BinaryData.fromObject(
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new Object()
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))
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);
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Function<String, String> getCityNickname = location -> {
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return "The Emerald City";
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};
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FunctionToolDefinition getCityNicknameTool = new FunctionToolDefinition(
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new FunctionDefinition(
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"getCityNickname",
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BinaryData.fromObject(
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mapOf(
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"type", "object",
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"properties", mapOf(
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"location",
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mapOf(
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"type", "string",
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"description", "The city and state, e.g. San Francisco, CA")
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),
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"required", new String[]{"location"}))
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).setDescription("Get the nickname of a city")
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);
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Function<RequiredToolCall, ToolOutput> getResolvedToolOutput = toolCall -> {
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if (toolCall instanceof RequiredFunctionToolCall) {
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RequiredFunctionToolCall functionToolCall = (RequiredFunctionToolCall) toolCall;
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String functionName = functionToolCall.getFunction().getName();
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if (functionName.equals("getUserFavoriteCity")) {
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return new ToolOutput().setToolCallId(functionToolCall.getId())
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.setOutput(getUserFavoriteCity.get());
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} else if (functionName.equals("getCityNickname")) {
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String arguments = functionToolCall.getFunction().getArguments();
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try {
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JsonNode root = new JsonMapper().readTree(arguments);
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String location = String.valueOf(root.get("location").asText());
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return new ToolOutput().setToolCallId(functionToolCall.getId())
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.setOutput(getCityNickname.apply(location));
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} catch (JsonProcessingException e) {
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throw new RuntimeException(e);
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}
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}
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}
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return null;
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};
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String agentName = "functions_example";
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CreateAgentOptions createAgentOptions = new CreateAgentOptions(modelName)
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.setName(agentName)
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.setInstructions("You are a weather bot. Use the provided functions to help answer questions. "
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+ "Customize your responses to the user's preferences as much as possible and use friendly "
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+ "nicknames for cities whenever possible.")
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.setTools(Arrays.asList(getUserFavoriteCityTool, getCityNicknameTool));
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PersistentAgent agent = administrationClient.createAgent(createAgentOptions);
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PersistentAgentThread thread = threadsClient.createThread();
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ThreadMessage createdMessage = messagesClient.createMessage(
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thread.getId(),
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MessageRole.USER,
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"What's the nickname of my favorite city?");
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try {
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//run agent
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CreateRunOptions createRunOptions = new CreateRunOptions(thread.getId(), agent.getId())
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.setAdditionalInstructions("");
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ThreadRun threadRun = runsClient.createRun(createRunOptions);
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do {
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Thread.sleep(500);
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threadRun = runsClient.getRun(thread.getId(), threadRun.getId());
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if (threadRun.getStatus() == RunStatus.REQUIRES_ACTION
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&& threadRun.getRequiredAction() instanceof SubmitToolOutputsAction) {
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SubmitToolOutputsAction submitToolsOutputAction = (SubmitToolOutputsAction) (threadRun.getRequiredAction());
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ArrayList<ToolOutput> toolOutputs = new ArrayList<ToolOutput>();
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for (RequiredToolCall toolCall : submitToolsOutputAction.getSubmitToolOutputs().getToolCalls()) {
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toolOutputs.add(getResolvedToolOutput.apply(toolCall));
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}
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threadRun = runsClient.submitToolOutputsToRun(thread.getId(), threadRun.getId(), toolOutputs);
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}
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}
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while (
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threadRun.getStatus() == RunStatus.QUEUED
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|| threadRun.getStatus() == RunStatus.IN_PROGRESS
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|| threadRun.getStatus() == RunStatus.REQUIRES_ACTION);
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if (threadRun.getStatus() == RunStatus.FAILED) {
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System.out.println(threadRun.getLastError().getMessage());
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}
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printRunMessages(messagesClient, thread.getId());
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} catch (InterruptedException e) {
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throw new RuntimeException(e);
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} finally {
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//cleanup
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threadsClient.deleteThread(thread.getId());
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administrationClient.deleteAgent(agent.getId());
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}
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}
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// Use "Map.of" if available
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@SuppressWarnings("unchecked")
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private static <T> Map<String, T> mapOf(Object... inputs) {
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Map<String, T> map = new HashMap<>();
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for (int i = 0; i < inputs.length; i += 2) {
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String key = (String) inputs[i];
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T value = (T) inputs[i + 1];
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map.put(key, value);
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}
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return map;
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}
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// A helper function to print messages from the agent
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public static void printRunMessages(MessagesClient messagesClient, String threadId) {
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PagedIterable<ThreadMessage> runMessages = messagesClient.listMessages(threadId);
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for (ThreadMessage message : runMessages) {
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System.out.print(String.format("%1$s - %2$s : ", message.getCreatedAt(), message.getRole()));
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for (MessageContent contentItem : message.getContent()) {
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if (contentItem instanceof MessageTextContent) {
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System.out.print((((MessageTextContent) contentItem).getText().getValue()));
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} else if (contentItem instanceof MessageImageFileContent) {
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String imageFileId = (((MessageImageFileContent) contentItem).getImageFile().getFileId());
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System.out.print("Image from ID: " + imageFileId);
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}
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System.out.println();
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}
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}
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}
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// a helper function to wait until a run has completed running
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public static void waitForRunCompletion(String threadId, ThreadRun threadRun, RunsClient runsClient)
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throws InterruptedException {
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do {
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Thread.sleep(500);
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threadRun = runsClient.getRun(threadId, threadRun.getId());
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}
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while (
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threadRun.getStatus() == RunStatus.QUEUED
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|| threadRun.getStatus() == RunStatus.IN_PROGRESS
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|| threadRun.getStatus() == RunStatus.REQUIRES_ACTION);
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if (threadRun.getStatus() == RunStatus.FAILED) {
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System.out.println(threadRun.getLastError().getMessage());
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}
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}
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private static Path getFile(String fileName) throws FileNotFoundException, URISyntaxException {
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URL resource = AgentExample.class.getClassLoader().getResource(fileName);
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if (resource == null) {
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throw new FileNotFoundException("File not found");
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}
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File file = new File(resource.toURI());
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return file.toPath();
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}
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@FunctionalInterface
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public interface Supplier<T> extends java.util.function.Supplier<T> {
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/**
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* Retrieves an instance of the appropriate type. The returned object may or may not be a new
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* instance, depending on the implementation.
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*
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* @return an instance of the appropriate type
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*/
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@Override
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T get();
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}
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}
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```
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::: zone-end

‎zone-pivots/zone-pivot-groups.yml

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pivots:
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- id: csharp
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title: C#
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- id: java
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title: Java
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- id: python
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title: Python
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- id: typescript

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