//	method 1 (assumes AWS credentials configured using named profiles)
PresignedPostRequestForm form = new PresignedPostRequestForm.Builder(REGION,BUCKET, "sample2.jpg")
                .withCredentialsFromAwsNamedProfile("myprofile")
                .withExpiresInSeconds(30)
                .build();
				
//	method 2 (assumes providing AWS accesskey / secret access key i.e. taken from assumesRole from sts service (recommended in production)
PresignedPostRequestForm form = new PresignedPostRequestForm.Builder(REGION,BUCKET, "sample2.jpg")
                .withAwsCredentials("PUT_HERE_ACCESS_KEY", "PUT_HERE_SECRET_ACESS_KEY")
                .withExpiresInSeconds(30)
                .build();

package com.jszczepankiewicz.s3.presigned;

import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Test;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.net.URISyntaxException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Map;
import java.util.UUID;
import java.util.logging.Logger;

import static java.net.HttpURLConnection.HTTP_NO_CONTENT;
import static java.net.HttpURLConnection.HTTP_OK;
import static java.util.logging.Logger.getLogger;
import static org.assertj.core.api.Assertions.assertThat;

/**
 * End to end tests disabled by default. If you want to execute them make sure you properly configured:
 * - roles on AWS3 for upload
 * - named profile with corresponding credentials (below code assumes existence of 'upload_presigned' named profile in ~/.aws/credentials
 */
//@Disabled
public class PresignedPostRequestFormEndToEndTest {

    private final static Logger LOG = getLogger(PresignedPostRequestFormEndToEndTest.class.getName());

    private static final String BUCKET = "your-bucket-name";
    private static final String REGION = "eu-central-1";
    private static final String NAMED_PROFILE = "upload_presigned";
    private static final int S1_SIZE = 59114;
    private static final String S1_FILENAME = "sample1.jpg";
    private static final String S1_CONTENT_TYPE = "image/jpeg";
    private static final int S2_SIZE_BYTES = 1;
    private static final String S2_CONTENT_TYPE = "text/plain";

    private String getS2Keyname(){
        return UUID.randomUUID().toString() + ".txt";
    }

    @Test
    void shouldUploadTextFileWithConditionOfContentLength(){

        //  given
        String key = getS2Keyname();
        PresignedPostRequestForm form = new PresignedPostRequestForm.Builder(REGION,BUCKET, key)
                .withCredentialsFromAwsNamedProfile(NAMED_PROFILE)
                .withExpiresInSeconds(30)
                .withConditions(new Conditions.Builder().ofContentLengthBetween(S2_SIZE_BYTES, S2_SIZE_BYTES + 100).build())
                .build();

        dumpOutcome(form);
        //  when
        HttpFormClient.Response response = HttpFormClient.uploadForm(form.getUrl(), form.getFormFields(),
                getFileStream2("example.txt"), key, S2_CONTENT_TYPE);

        //  then
        assertThat(response.getHttpCode()).isEqualTo(HTTP_NO_CONTENT);
    }

    @Test
    void shouldUploadTextFileWithConditionOfExactContentType(){
        //  given
        String key = getS2Keyname();
        PresignedPostRequestForm form = new PresignedPostRequestForm.Builder(REGION,BUCKET, key)
                .withCredentialsFromAwsNamedProfile(NAMED_PROFILE)
                .withExpiresInSeconds(30)
                .withConditions(new Conditions.Builder().ofExactContentType(S2_CONTENT_TYPE).build())
                .build();

        dumpOutcome(form);
        //  when
        HttpFormClient.Response response = HttpFormClient.uploadForm(form.getUrl(), form.getFormFields(),
                getFileStream2("example.txt"), key, S2_CONTENT_TYPE);

        //  then
        assertThat(response.getHttpCode()).isEqualTo(HTTP_NO_CONTENT);
    }

    @Test
    void shouldUploadImageWithoutConditions() {
        //System.setProperty("javax.net.debug","all");

        //  given
        PresignedPostRequestForm form = new PresignedPostRequestForm.Builder(REGION,BUCKET, "sample2.jpg")
                .withCredentialsFromAwsNamedProfile(NAMED_PROFILE)
                .withExpiresInSeconds(30)
                .build();

        //dumpOutcome(form);

        //  when
        HttpFormClient.Response response = HttpFormClient.uploadForm(form.getUrl(), form.getFormFields(),
                getFileStream("sample1.jpg"), S1_FILENAME, S1_CONTENT_TYPE);

        //  then
        assertThat(response.getHttpCode()).isEqualTo(HTTP_NO_CONTENT);



    }

    private InputStream getFileStream2(String filename) {
        InputStream is = null;
        try {
            is = new FileInputStream(new File("c:\\temp\\example.txt"));
        } catch (FileNotFoundException e) {
            throw new IllegalStateException(e);
        }
        return is;
    }

    private InputStream getFileStream(String filename) {
        InputStream is = null;
        try {
            is = new FileInputStream(new File("c:\\dev\\sample1.jpg"));
        } catch (FileNotFoundException e) {
            throw new IllegalStateException(e);
        }
        return is;
    }

    private void dumpOutcome(PresignedPostRequestForm form){
        LOG.info("Dumping form: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
        LOG.info("url: " + form.getUrl());
        for (Map.Entry<String, String> pair : form.getFormFields().entrySet()) {
            LOG.info("\t[" + pair.getKey() + "] => " + pair.getValue());
        }
        LOG.info("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");

    }


}