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package fish.payara.microprofile.config.extensions.dynamodb;
import java.io.IOException;
import java.io.InputStream;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import jakarta.json.Json;
import jakarta.json.JsonArray;
import jakarta.json.JsonException;
import jakarta.json.JsonObject;
import jakarta.json.JsonValue;
import jakarta.json.stream.JsonParser;
import jakarta.ws.rs.HttpMethod;
import jakarta.ws.rs.ProcessingException;
import jakarta.ws.rs.core.Response;
import org.glassfish.config.support.TranslatedConfigView;
import org.jvnet.hk2.annotations.Service;
import fish.payara.microprofile.config.extensions.aws.client.AwsRequestBuilder;
import fish.payara.nucleus.microprofile.config.source.extension.ConfiguredExtensionConfigSource;
import fish.payara.nucleus.microprofile.config.spi.MicroprofileConfigConfiguration;
import jakarta.inject.Inject;
@Service(name = "dynamodb-config-source")
public class DynamoDBConfigSource extends ConfiguredExtensionConfigSource {
public static final Set SUPPORTED_DATA_TYPES = new HashSet<>(Arrays.asList("S", "N", "B", "BOOL", "NULL"));
private static final Logger LOGGER = Logger.getLogger(DynamoDBConfigSource.class.getName());
private AwsRequestBuilder builder;
@Inject
MicroprofileConfigConfiguration mpconfig;
@Override
public void bootstrap() {
try {
// Find the access keys. Throws IllegalArgumentException if not found
final String accessKeyId = TranslatedConfigView.getRealPasswordFromAlias("${ALIAS=AWS_ACCESS_KEY_ID}");
final String secretAccessKey = TranslatedConfigView.getRealPasswordFromAlias("${ALIAS=AWS_SECRET_ACCESS_KEY}");
this.builder = AwsRequestBuilder.builder(accessKeyId, secretAccessKey)
.region(configuration.getRegionName())
.serviceName("DynamoDB")
.method(HttpMethod.POST)
.ContentType("application/json")
.data(Json.createObjectBuilder()
.add("TableName", configuration.getTableName())
.add("ProjectionExpression", configuration.getKeyColumnName() + "," + configuration.getValueColumnName())
.add("Limit", Integer.parseInt(configuration.getLimit()))
.build());
} catch (IllegalArgumentException ex) {
printMisconfigurationMessage();
} catch (UnrecoverableKeyException | KeyStoreException | CertificateException | NoSuchAlgorithmException
| IOException ex) {
LOGGER.log(Level.WARNING, "Unable to get value from password aliases", ex);
}
}
@Override
public Map getProperties() {
if (builder == null) {
printMisconfigurationMessage();
return new HashMap<>();
}
final Response response = builder
.action("Scan")
.build()
.invoke();
if (response.getStatus() != 200) {
LOGGER.log(Level.WARNING, "Failed to get data from DynamoDB. {0}", response.readEntity(String.class));
} else {
try {
final JsonArray items = readItems((InputStream) response.getEntity());
return readDataFromItems(items, configuration.getKeyColumnName(), configuration.getValueColumnName());
} catch (ProcessingException | JsonException ex) {
LOGGER.log(Level.WARNING, "Failed to read the data retrived from your DynamoDB", ex);
}
}
return new HashMap<>();
}
@Override
public Set getPropertyNames() {
return getProperties().keySet();
}
@Override
public String getValue(String propertyName) {
if (builder == null) {
printMisconfigurationMessage();
return null;
}
return getProperties().get(propertyName);
}
public static Map readDataFromItems(JsonArray items, String keyColumnName, String valueColumnName) {
Map results = new HashMap<>();
for (JsonValue itemsJsonValue : items) {
JsonObject keyColumn = itemsJsonValue.asJsonObject().getJsonObject(keyColumnName);
if (keyColumn != null) {
boolean isKeyColumnValueValid = true;
String keyColumnValue = "";
for (String keyFieldName : keyColumn.keySet()) {
if (SUPPORTED_DATA_TYPES.contains(keyFieldName)) {
keyColumnValue = keyColumn.get(keyFieldName).toString();
} else {
isKeyColumnValueValid = false;
printDataTypeNotSupportMessage();
break;
}
}
if (isKeyColumnValueValid) {
JsonObject valueColumn = itemsJsonValue.asJsonObject().getJsonObject(valueColumnName);
String valueColumnValue = "";
for (String valueFieldName : valueColumn.keySet()) {
if (SUPPORTED_DATA_TYPES.contains(valueFieldName)) {
valueColumnValue = valueColumn.get(valueFieldName).toString();
} else {
printDataTypeNotSupportMessage();
break;
}
}
results.put(keyColumnValue.replaceAll("^\"|\"$", ""), valueColumnValue.replaceAll("^\"|\"$", ""));
}
}
}
return results;
}
private static JsonArray readItems(InputStream input) {
try (JsonParser parser = Json.createParser(input)) {
while (parser.hasNext()) {
JsonParser.Event parseEvent = parser.next();
if (parseEvent == JsonParser.Event.KEY_NAME) {
final String keyName = parser.getString();
parser.next();
if ("Items".equals(keyName)) {
return parser.getArray();
}
}
}
}
return null;
}
@Override
public String getSource() {
return "cloud";
}
@Override
public String getName() {
return "dynamodb";
}
@Override
public int getOrdinal() {
return Integer.parseInt(mpconfig.getCloudOrdinality());
}
@Override
public void destroy() {
this.builder = null;
}
@Override
public boolean setValue(String name, String value) {
LOGGER.warning("DynamoDB Config source currently doesn't support setting config property");
return false;
}
@Override
public boolean deleteValue(String name) {
LOGGER.warning("DynamoDB Config source currently doesn't support deleting config property");
return false;
}
private static void printMisconfigurationMessage() {
LOGGER.warning("DynamoDB Config Source isn't configured correctly. "
+ "Make sure that the password aliases AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY exist.");
}
private static void printDataTypeNotSupportMessage() {
LOGGER.warning("The column you have configured with DynamoDB Config source has attributes that use a data type that is not currently supported. "
+ "Only the following types are supported: String, Binary, Boolean, Number and Null.");
}
}
