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Support custom URL scheme handlers (apache#1212)
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121 changes: 121 additions & 0 deletions
121
pulsar-client/src/main/java/org/apache/pulsar/client/api/url/DataURLStreamHandler.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| /** | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you 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 org.apache.pulsar.client.api.url; | ||
|
|
||
| import java.io.ByteArrayInputStream; | ||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.net.MalformedURLException; | ||
| import java.net.URI; | ||
| import java.net.URISyntaxException; | ||
| import java.net.URL; | ||
| import java.net.URLConnection; | ||
| import java.net.URLStreamHandler; | ||
| import java.util.Base64; | ||
| import java.util.regex.Matcher; | ||
| import java.util.regex.Pattern; | ||
|
|
||
| public class DataURLStreamHandler extends URLStreamHandler { | ||
|
|
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| class DataURLConnection extends URLConnection { | ||
| private boolean parsed = false; | ||
| private String contentType; | ||
| private String data; | ||
| private URI uri; | ||
|
|
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| protected DataURLConnection(URL url) { | ||
| super(url); | ||
| try { | ||
| this.uri = this.url.toURI(); | ||
| } catch (URISyntaxException e) { | ||
| this.uri = null; | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void connect() throws IOException { | ||
| if (this.parsed) { | ||
| return; | ||
| } | ||
|
|
||
| if (this.uri == null) { | ||
| throw new IOException(); | ||
| } | ||
| Pattern pattern = Pattern.compile( | ||
| "(?<mimeType>.+?)(;(?<charset>charset=.+?))?(;(?<base64>base64?))?,(?<data>.+)", Pattern.DOTALL); | ||
| Matcher matcher = pattern.matcher(this.uri.getSchemeSpecificPart()); | ||
| if (matcher.matches()) { | ||
| this.contentType = matcher.group("mimeType"); | ||
| String charset = matcher.group("charset"); | ||
| if (charset == null) { | ||
| charset = "US-ASCII"; | ||
| } | ||
| if (matcher.group("base64") == null) { | ||
| // Support Urlencode but not decode here because already decoded by URI class. | ||
| this.data = new String(matcher.group("data").getBytes(), charset); | ||
| } else { | ||
| this.data = new String(Base64.getDecoder().decode(matcher.group("data")), charset); | ||
| } | ||
| } else { | ||
| throw new MalformedURLException(); | ||
| } | ||
| parsed = true; | ||
| } | ||
|
|
||
| @Override | ||
| public long getContentLengthLong() { | ||
| long length; | ||
| try { | ||
| this.connect(); | ||
| length = this.data.length(); | ||
| } catch (IOException e) { | ||
| length = -1; | ||
| } | ||
| return length; | ||
| } | ||
|
|
||
| @Override | ||
| public String getContentType() { | ||
| String contentType; | ||
| try { | ||
| this.connect(); | ||
| contentType = this.contentType; | ||
| } catch (IOException e) { | ||
| contentType = null; | ||
| } | ||
| return contentType; | ||
| } | ||
|
|
||
| @Override | ||
| public String getContentEncoding() { | ||
| return "identity"; | ||
| } | ||
|
|
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| public InputStream getInputStream() throws IOException { | ||
| this.connect(); | ||
| return new ByteArrayInputStream(this.data.getBytes()); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| protected URLConnection openConnection(URL u) throws IOException { | ||
| return new DataURLConnection(u); | ||
| } | ||
|
|
||
| } |
51 changes: 51 additions & 0 deletions
51
...-client/src/main/java/org/apache/pulsar/client/api/url/PulsarURLStreamHandlerFactory.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| /** | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you 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 org.apache.pulsar.client.api.url; | ||
|
|
||
| import java.net.URLStreamHandler; | ||
| import java.net.URLStreamHandlerFactory; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
|
|
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| public class PulsarURLStreamHandlerFactory implements URLStreamHandlerFactory { | ||
| static Map<String, Class<? extends URLStreamHandler>> handlers; | ||
| static { | ||
| handlers = new HashMap<>(); | ||
| handlers.put("data", DataURLStreamHandler.class); | ||
| } | ||
|
|
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| @Override | ||
| public URLStreamHandler createURLStreamHandler(String protocol) { | ||
| URLStreamHandler urlStreamHandler; | ||
| try { | ||
| Class<? extends URLStreamHandler> handler = handlers.get(protocol); | ||
| if (handler != null) { | ||
| urlStreamHandler = handler.newInstance(); | ||
| } else { | ||
| urlStreamHandler = null; | ||
| } | ||
| } catch (InstantiationException e) { | ||
| urlStreamHandler = null; | ||
| } catch (IllegalAccessException e) { | ||
| urlStreamHandler = null; | ||
| } | ||
| return urlStreamHandler; | ||
| } | ||
|
|
||
| } |
54 changes: 54 additions & 0 deletions
54
pulsar-client/src/main/java/org/apache/pulsar/client/api/url/URL.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,54 @@ | ||
| /** | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you 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 org.apache.pulsar.client.api.url; | ||
|
|
||
| import java.io.IOException; | ||
| import java.net.MalformedURLException; | ||
| import java.net.URI; | ||
| import java.net.URISyntaxException; | ||
| import java.net.URLConnection; | ||
| import java.net.URLStreamHandlerFactory; | ||
|
|
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| public class URL { | ||
| private static URLStreamHandlerFactory urlStreamHandlerFactory = new PulsarURLStreamHandlerFactory(); | ||
| private java.net.URL url; | ||
|
|
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| public URL(String spec) | ||
| throws MalformedURLException, URISyntaxException, InstantiationException, IllegalAccessException { | ||
| String scheme = new URI(spec).getScheme(); | ||
| if (scheme == null) { | ||
| this.url = new java.net.URL(null, "file:" + spec); | ||
| } else { | ||
| this.url = new java.net.URL(null, spec, urlStreamHandlerFactory.createURLStreamHandler(scheme)); | ||
| } | ||
| } | ||
|
|
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| public URLConnection openConnection() throws IOException { | ||
| return this.url.openConnection(); | ||
| } | ||
|
|
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| public Object getContent() throws IOException { | ||
| return this.url.getContent(); | ||
| } | ||
|
|
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| public Object getContent(Class[] classes) throws IOException { | ||
| return this.url.getContent(classes); | ||
| } | ||
|
|
||
| } |