Usar claves de API para acceder a las APIs

using Google.Cloud.Language.V1;
using System;

public class UseApiKeySample
{
    public void AnalyzeSentiment(string apiKey)
    {
        LanguageServiceClient client = new LanguageServiceClientBuilder
        {
            ApiKey = apiKey
        }.Build();

        string text = "Hello, world!";

        AnalyzeSentimentResponse response = client.AnalyzeSentiment(Document.FromPlainText(text));
        Console.WriteLine($"Text: {text}");
        Sentiment sentiment = response.DocumentSentiment;
        Console.WriteLine($"Sentiment: {sentiment.Score}, {sentiment.Magnitude}");
        Console.WriteLine("Successfully authenticated using the API key");
    }
}

#include "google/cloud/language/v1/language_client.h"
#include "google/cloud/credentials.h"
#include "google/cloud/options.h"

void AuthenticateWithApiKey(std::vector<std::string> const& argv) {
  if (argv.size() != 2) {
    throw google::cloud::testing_util::Usage{
        "authenticate-with-api-key <project-id> <api-key>"};
  }
  namespace gc = ::google::cloud;
  auto options = gc::Options{}.set<gc::UnifiedCredentialsOption>(
      gc::MakeApiKeyCredentials(argv[1]));
  auto client = gc::language_v1::LanguageServiceClient(
      gc::language_v1::MakeLanguageServiceConnection(options));

  auto constexpr kText = "Hello, world!";

  google::cloud::language::v1::Document d;
  d.set_content(kText);
  d.set_type(google::cloud::language::v1::Document::PLAIN_TEXT);

  auto response = client.AnalyzeSentiment(d, {});
  if (!response) throw std::move(response.status());
  auto const& sentiment = response->document_sentiment();
  std::cout << "Text: " << kText << "\n";
  std::cout << "Sentiment: " << sentiment.score() << ", "
            << sentiment.magnitude() << "\n";
  std::cout << "Successfully authenticated using the API key\n";
}

import (
	"context"
	"fmt"
	"io"

	language "cloud.google.com/go/language/apiv1"
	"cloud.google.com/go/language/apiv1/languagepb"
	"google.golang.org/api/option"
)

// authenticateWithAPIKey authenticates with an API key for Google Language
// service.
func authenticateWithAPIKey(w io.Writer, apiKey string) error {
	// apiKey := "api-key-string"

	ctx := context.Background()

	// Initialize the Language Service client and set the API key.
	client, err := language.NewClient(ctx, option.WithAPIKey(apiKey))
	if err != nil {
		return fmt.Errorf("NewClient: %w", err)
	}
	defer client.Close()

	text := "Hello, world!"
	// Make a request to analyze the sentiment of the text.
	res, err := client.AnalyzeSentiment(ctx, &languagepb.AnalyzeSentimentRequest{
		Document: &languagepb.Document{
			Source: &languagepb.Document_Content{
				Content: text,
			},
			Type: languagepb.Document_PLAIN_TEXT,
		},
	})
	if err != nil {
		return fmt.Errorf("AnalyzeSentiment: %w", err)
	}

	fmt.Fprintf(w, "Text: %s\n", text)
	fmt.Fprintf(w, "Sentiment score: %v\n", res.DocumentSentiment.Score)
	fmt.Fprintln(w, "Successfully authenticated using the API key.")

	return nil
}

const {
  v1: {LanguageServiceClient},
} = require('@google-cloud/language');

/**
 * Authenticates with an API key for Google Language service.
 *
 * @param {string} apiKey An API Key to use
 */
async function authenticateWithAPIKey(apiKey) {
  const language = new LanguageServiceClient({apiKey});

  // Alternatively:
  // const {GoogleAuth} = require('google-auth-library');
  // const auth = new GoogleAuth({apiKey});
  // const language = new LanguageServiceClient({auth});

  const text = 'Hello, world!';

  const [response] = await language.analyzeSentiment({
    document: {
      content: text,
      type: 'PLAIN_TEXT',
    },
  });

  console.log(`Text: ${text}`);
  console.log(
    `Sentiment: ${response.documentSentiment.score}, ${response.documentSentiment.magnitude}`,
  );
  console.log('Successfully authenticated using the API key');
}

authenticateWithAPIKey();

from google.cloud import language_v1


def authenticate_with_api_key(api_key_string: str) -> None:
    """
    Authenticates with an API key for Google Language service.

    TODO(Developer): Replace this variable before running the sample.

    Args:
        api_key_string: The API key to authenticate to the service.
    """

    # Initialize the Language Service client and set the API key
    client = language_v1.LanguageServiceClient(
        client_options={"api_key": api_key_string}
    )

    text = "Hello, world!"
    document = language_v1.Document(
        content=text, type_=language_v1.Document.Type.PLAIN_TEXT
    )

    # Make a request to analyze the sentiment of the text.
    sentiment = client.analyze_sentiment(
        request={"document": document}
    ).document_sentiment

    print(f"Text: {text}")
    print(f"Sentiment: {sentiment.score}, {sentiment.magnitude}")
    print("Successfully authenticated using the API key")

require "googleauth"
require "google/cloud/language/v1"

def authenticate_with_api_key api_key_string
  # Authenticates with an API key for Google Language service.
  #
  # TODO(Developer): Uncomment the following line and set the value before running this sample.
  #
  # api_key_string = "mykey12345"
  #
  # Note: You can also set the API key via environment variable:
  #   export GOOGLE_API_KEY=your-api-key
  # and use Google::Auth::APIKeyCredentials.from_env method to load it.
  # Example:
  #   credentials = Google::Auth::APIKeyCredentials.from_env
  #   if credentials.nil?
  #     puts "No API key found in environment"
  #     exit
  #   end

  # Initialize API key credentials using the class factory method
  credentials = Google::Auth::APIKeyCredentials.make_creds api_key: api_key_string

  # Initialize the Language Service client with the API key credentials
  client = Google::Cloud::Language::V1::LanguageService::Client.new do |config|
    config.credentials = credentials
  end

  # Create a document to analyze
  text = "Hello, world!"
  document = {
    content: text,
    type: :PLAIN_TEXT
  }

  # Make a request to analyze the sentiment of the text
  sentiment = client.analyze_sentiment(document: document).document_sentiment

  puts "Text: #{text}"
  puts "Sentiment: #{sentiment.score}, #{sentiment.magnitude}"
  puts "Successfully authenticated using the API key"
end