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play.api.rest.ParameterHandler Maven / Gradle / Ivy
/*
* Copyright (C) 2015 Square, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package play.api.rest;
import org.apache.http.HttpEntity;
import org.apache.http.client.config.RequestConfig;
import javax.annotation.Nullable;
import java.io.IOException;
import java.lang.reflect.Array;
import java.util.Map;
abstract class ParameterHandler {
abstract void apply(ReqBuilder builder, @Nullable T value) throws IOException;
final ParameterHandler> iterable() {
return new ParameterHandler>() {
@Override void apply(ReqBuilder builder, @Nullable Iterable values)
throws IOException {
if (values == null) return; // Skip null values.
for (T value : values) {
ParameterHandler.this.apply(builder, value);
}
}
};
}
final ParameterHandler array() {
return new ParameterHandler() {
@Override void apply(ReqBuilder builder, @Nullable Object values) throws IOException {
if (values == null) return; // Skip null values.
for (int i = 0, size = Array.getLength(values); i < size; i++) {
//noinspection unchecked
ParameterHandler.this.apply(builder, (T) Array.get(values, i));
}
}
};
}
static final class RelativeUrl extends ParameterHandler {
@Override
void apply(ReqBuilder builder, @Nullable Object value) {
builder.setRelativeUrl(value);
}
}
static final class Header extends ParameterHandler {
private final String name;
private final Converter valueConverter;
Header(String name, Converter valueConverter) {
this.name = name;
this.valueConverter = valueConverter;
}
@Override
void apply(ReqBuilder builder, @Nullable T value) throws IOException {
if (value == null) return; // Skip null values.
String headerValue = valueConverter.convert(value);
if (headerValue == null) return; // Skip converted but null values.
builder.addHeader(name, headerValue);
}
}
static final class Path extends ParameterHandler {
private final String name;
private final Converter valueConverter;
Path(String name, Converter valueConverter) {
this.name = name;
this.valueConverter = valueConverter;
}
@Override void apply(ReqBuilder builder, @Nullable T value) throws IOException {
if (value == null) {
throw new IllegalArgumentException(
"Path parameter \"" + name + "\" value must not be null.");
}
builder.addPathParam(name, valueConverter.convert(value));
}
}
static final class Query extends ParameterHandler {
private final String name;
private final Converter valueConverter;
private final boolean encoded;
Query(String name, Converter valueConverter, boolean encoded) {
this.name = name;
this.valueConverter = valueConverter;
this.encoded = encoded;
}
@Override void apply(ReqBuilder builder, @Nullable T value) throws IOException {
if (value == null) return; // Skip null values.
String queryValue = valueConverter.convert(value);
if (queryValue == null) return; // Skip converted but null values
builder.addQueryParam(name, queryValue);
}
}
static final class QueryName extends ParameterHandler {
private final Converter nameConverter;
QueryName(Converter nameConverter) {
this.nameConverter = nameConverter;
}
@Override void apply(ReqBuilder builder, @Nullable T value) throws IOException {
if (value == null) return; // Skip null values.
builder.addQueryParam(nameConverter.convert(value), null);
}
}
static final class QueryMap extends ParameterHandler> {
private final Converter valueConverter;
QueryMap(Converter valueConverter) {
this.valueConverter = valueConverter;
}
@Override void apply(ReqBuilder builder, @Nullable Map value)
throws IOException {
if (value == null) {
throw new IllegalArgumentException("Query map was null.");
}
for (Map.Entry entry : value.entrySet()) {
String entryKey = entry.getKey();
if (entryKey == null) {
throw new IllegalArgumentException("Query map contained null key.");
}
T entryValue = entry.getValue();
if (entryValue == null) {
throw new IllegalArgumentException(
"Query map contained null value for key '" + entryKey + "'.");
}
String convertedEntryValue = valueConverter.convert(entryValue);
if (convertedEntryValue == null) {
throw new IllegalArgumentException("Query map value '"
+ entryValue
+ "' converted to null by "
+ valueConverter.getClass().getName()
+ " for key '"
+ entryKey
+ "'.");
}
builder.addQueryParam(entryKey, convertedEntryValue);
}
}
}
static final class HeaderMap extends ParameterHandler> {
private final Converter valueConverter;
HeaderMap(Converter valueConverter) {
this.valueConverter = valueConverter;
}
@Override
void apply(ReqBuilder builder, @Nullable Map value) throws IOException {
if (value == null) {
throw new IllegalArgumentException("Header map was null.");
}
for (Map.Entry entry : value.entrySet()) {
String headerName = entry.getKey();
if (headerName == null) {
throw new IllegalArgumentException("Header map contained null key.");
}
T headerValue = entry.getValue();
if (headerValue == null) {
throw new IllegalArgumentException(
"Header map contained null value for key '" + headerName + "'.");
}
builder.addHeader(headerName, valueConverter.convert(headerValue));
}
}
}
static final class Field extends ParameterHandler {
private final String name;
private final Converter valueConverter;
Field(String name, Converter valueConverter) {
this.name = name;
this.valueConverter = valueConverter;
}
@Override
void apply(ReqBuilder builder, @Nullable T value) throws IOException {
if (value == null) return; // Skip null values.
String fieldValue = valueConverter.convert(value);
if (fieldValue == null) return; // Skip null converted values
builder.addParameter(name, fieldValue);
}
}
static final class FieldMap extends ParameterHandler> {
private final Converter valueConverter;
FieldMap(Converter valueConverter) {
this.valueConverter = valueConverter;
}
@Override
void apply(ReqBuilder builder, @Nullable Map value)
throws IOException {
if (value == null) {
throw new IllegalArgumentException("Field map was null.");
}
for (Map.Entry entry : value.entrySet()) {
String entryKey = entry.getKey();
if (entryKey == null) {
throw new IllegalArgumentException("Field map contained null key.");
}
T entryValue = entry.getValue();
if (entryValue == null) {
throw new IllegalArgumentException(
"Field map contained null value for key '" + entryKey + "'.");
}
String fieldEntry = valueConverter.convert(entryValue);
if (fieldEntry == null) {
throw new IllegalArgumentException("Field map value '"
+ entryValue
+ "' converted to null by "
+ valueConverter.getClass().getName()
+ " for key '"
+ entryKey
+ "'.");
}
builder.addParameter(entryKey, fieldEntry);
}
}
}
/**
static final class Part extends ParameterHandler {
private final Converter converter;
Part( Converter converter) {
this.converter = converter;
}
@Override void apply(ReqBuilder builder, @Nullable T value) {
if (value == null) return; // Skip null values.
RequestBody body;
try {
body = converter.convert(value);
} catch (IOException e) {
throw new RuntimeException("Unable to convert " + value + " to RequestBody", e);
}
builder.addPart(headers, body);
}
}
static final class RawPart extends ParameterHandler {
static final RawPart INSTANCE = new RawPart();
private RawPart() {
}
@Override void apply(RequestBuilder builder, @Nullable MultipartBody.Part value) {
if (value != null) { // Skip null values.
builder.addPart(value);
}
}
}
static final class PartMap extends ParameterHandler> {
private final Converter valueConverter;
private final String transferEncoding;
PartMap(Converter valueConverter, String transferEncoding) {
this.valueConverter = valueConverter;
this.transferEncoding = transferEncoding;
}
@Override
void apply(ReqBuilder builder, @Nullable Map value)
throws IOException {
if (value == null) {
throw new IllegalArgumentException("Part map was null.");
}
for (Map.Entry entry : value.entrySet()) {
String entryKey = entry.getKey();
if (entryKey == null) {
throw new IllegalArgumentException("Part map contained null key.");
}
T entryValue = entry.getValue();
if (entryValue == null) {
throw new IllegalArgumentException(
"Part map contained null value for key '" + entryKey + "'.");
}
Headers headers = Headers.of(
"Content-Disposition", "form-data; name=\"" + entryKey + "\"",
"Content-Transfer-Encoding", transferEncoding);
builder.addPart(headers, valueConverter.convert(entryValue));
}
}
}
**/
static final class Body extends ParameterHandler {
private final Converter converter;
Body(Converter converter) {
this.converter = converter;
}
@Override void apply(ReqBuilder builder, @Nullable T value) {
if (value == null) {
throw new IllegalArgumentException("Body parameter value must not be null.");
}
HttpEntity body;
try {
body = converter.convert(value);
} catch (IOException e) {
throw new RuntimeException("Unable to convert " + value + " to RequestBody", e);
}
builder.setEntity(body);
}
}
static final class ReqConfig extends ParameterHandler {
@Override void apply(ReqBuilder builder, @Nullable T value) {
if (value == null) {
throw new IllegalArgumentException("RequestConfig parameter value must not be null.");
}
RequestConfig requestConfig = (RequestConfig) value;
builder.setConfig(requestConfig);
}
}
}
