Polishing (forward-ported from 4.1.x)
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@ -22,11 +22,10 @@ import java.util.Random;
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import java.util.UUID;
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/**
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* An {@link org.springframework.util.IdGenerator IdGenerator} that uses
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* {@link SecureRandom} for the initial seed and {@link Random} thereafter
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* instead of calling {@link UUID#randomUUID()} every time as
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* {@link org.springframework.util.JdkIdGenerator JdkIdGenerator} does.
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* This provides a better balance between securely random id's and performance.
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* An {@link IdGenerator} that uses {@link SecureRandom} for the initial seed and
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* {@link Random} thereafter, instead of calling {@link UUID#randomUUID()} every
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* time as {@link org.springframework.util.JdkIdGenerator JdkIdGenerator} does.
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* This provides a better balance between securely random ids and performance.
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*
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* @author Rossen Stoyanchev
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* @author Rob Winch
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@ -19,11 +19,10 @@ package org.springframework.util;
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import java.util.UUID;
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/**
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* An {@link org.springframework.util.IdGenerator IdGenerator} that calls
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* {@link java.util.UUID#randomUUID()}.
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* An {@link IdGenerator} that calls {@link java.util.UUID#randomUUID()}.
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*
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* @author Rossen Stoyanchev
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* @since 4.2
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* @since 4.1.5
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*/
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public class JdkIdGenerator implements IdGenerator {
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@ -20,11 +20,10 @@ import java.util.UUID;
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import java.util.concurrent.atomic.AtomicLong;
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/**
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* A simple {@link org.springframework.util.IdGenerator IdGenerator} that
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* starts at 1 and increments by 1 with each call.
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* A simple {@link IdGenerator} that starts at 1 and increments by 1 with each call.
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*
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* @author Rossen Stoyanchev
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* @since 4.2
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* @since 4.1.5
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*/
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public class SimpleIdGenerator implements IdGenerator {
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@ -25,8 +25,9 @@ import org.springframework.http.HttpStatus;
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import org.springframework.http.client.ClientHttpResponse;
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/**
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* Implementation of {@link ClientHttpResponse} that can not only check if the response
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* has a message body, but also if its length is 0 (i.e. empty) by actually reading the input stream.
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* Implementation of {@link ClientHttpResponse} that can not only check if
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* the response has a message body, but also if its length is 0 (i.e. empty)
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* by actually reading the input stream.
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*
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* @author Brian Clozel
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* @since 4.1.5
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@ -34,23 +35,23 @@ import org.springframework.http.client.ClientHttpResponse;
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*/
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class MessageBodyClientHttpResponseWrapper implements ClientHttpResponse {
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private final ClientHttpResponse response;
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private PushbackInputStream pushbackInputStream;
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private final ClientHttpResponse response;
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public MessageBodyClientHttpResponseWrapper(ClientHttpResponse response) throws IOException {
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this.response = response;
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}
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/**
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* Indicates whether the response has a message body.
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*
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* <p>Implementation returns {@code false} for:
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* <ul>
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* <li>a response status of {@code 1XX}, {@code 204} or {@code 304}</li>
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* <li>a {@code Content-Length} header of {@code 0}</li>
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* <li>a response status of {@code 1XX}, {@code 204} or {@code 304}</li>
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* <li>a {@code Content-Length} header of {@code 0}</li>
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* </ul>
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*
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* @return {@code true} if the response has a message body, {@code false} otherwise
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* @throws IOException in case of I/O errors
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*/
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@ -68,13 +69,11 @@ class MessageBodyClientHttpResponseWrapper implements ClientHttpResponse {
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/**
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* Indicates whether the response has an empty message body.
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*
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* <p>Implementation tries to read the first bytes of the response stream:
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* <ul>
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* <li>if no bytes are available, the message body is empty</li>
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* <li>otherwise it is not empty and the stream is reset to its start for further reading</li>
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* <li>if no bytes are available, the message body is empty</li>
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* <li>otherwise it is not empty and the stream is reset to its start for further reading</li>
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* </ul>
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*
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* @return {@code true} if the response has a zero-length message body, {@code false} otherwise
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* @throws IOException in case of I/O errors
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*/
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@ -95,44 +94,46 @@ class MessageBodyClientHttpResponseWrapper implements ClientHttpResponse {
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}
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else {
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this.pushbackInputStream = new PushbackInputStream(body);
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int b = pushbackInputStream.read();
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int b = this.pushbackInputStream.read();
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if (b == -1) {
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return true;
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}
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else {
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pushbackInputStream.unread(b);
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this.pushbackInputStream.unread(b);
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return false;
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}
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}
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}
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@Override
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public HttpStatus getStatusCode() throws IOException {
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return response.getStatusCode();
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}
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@Override
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public int getRawStatusCode() throws IOException {
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return response.getRawStatusCode();
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}
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@Override
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public String getStatusText() throws IOException {
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return response.getStatusText();
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}
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@Override
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public void close() {
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response.close();
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public HttpHeaders getHeaders() {
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return this.response.getHeaders();
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}
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@Override
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public InputStream getBody() throws IOException {
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return this.pushbackInputStream != null ? this.pushbackInputStream : response.getBody();
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return (this.pushbackInputStream != null ? this.pushbackInputStream : this.response.getBody());
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}
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@Override
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public HttpHeaders getHeaders() {
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return response.getHeaders();
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public HttpStatus getStatusCode() throws IOException {
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return this.response.getStatusCode();
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}
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@Override
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public int getRawStatusCode() throws IOException {
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return this.response.getRawStatusCode();
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}
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@Override
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public String getStatusText() throws IOException {
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return this.response.getStatusText();
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}
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@Override
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public void close() {
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this.response.close();
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}
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}
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