| 1 | /*
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| 2 | * Copyright 2001-2004 The Apache Software Foundation
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | *
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| 16 | */
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| 17 |
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| 18 | package org.apache.tools.ant.taskdefs.condition;
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| 19 |
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| 20 | import java.net.HttpURLConnection;
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| 21 | import java.net.MalformedURLException;
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| 22 | import java.net.URL;
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| 23 | import java.net.URLConnection;
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| 24 | import org.apache.tools.ant.BuildException;
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| 25 | import org.apache.tools.ant.Project;
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| 26 | import org.apache.tools.ant.ProjectComponent;
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| 27 |
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| 28 | /**
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| 29 | * Condition to wait for a HTTP request to succeed. Its attribute(s) are:
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| 30 | * url - the URL of the request.
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| 31 | * errorsBeginAt - number at which errors begin at; default=400.
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| 32 | * @since Ant 1.5
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| 33 | */
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| 34 | public class Http extends ProjectComponent implements Condition {
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| 35 | private String spec = null;
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| 36 |
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| 37 | /**
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| 38 | * Set the url attribute
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| 39 | *
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| 40 | * @param url the url of the request
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| 41 | */
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| 42 | public void setUrl(String url) {
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| 43 | spec = url;
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| 44 | }
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| 45 |
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| 46 | private int errorsBeginAt = 400;
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| 47 |
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| 48 | /**
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| 49 | * Set the errorsBeginAt attribute
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| 50 | *
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| 51 | * @param errorsBeginAt number at which errors begin at, default is
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| 52 | * 400
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| 53 | */
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| 54 | public void setErrorsBeginAt(int errorsBeginAt) {
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| 55 | this.errorsBeginAt = errorsBeginAt;
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| 56 | }
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| 57 |
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| 58 | /**
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| 59 | * @return true if the HTTP request succeeds
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| 60 | * @exception BuildException if an error occurs
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| 61 | */
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| 62 | public boolean eval() throws BuildException {
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| 63 | if (spec == null) {
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| 64 | throw new BuildException("No url specified in http condition");
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| 65 | }
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| 66 | log("Checking for " + spec, Project.MSG_VERBOSE);
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| 67 | try {
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| 68 | URL url = new URL(spec);
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| 69 | try {
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| 70 | URLConnection conn = url.openConnection();
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| 71 | if (conn instanceof HttpURLConnection) {
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| 72 | HttpURLConnection http = (HttpURLConnection) conn;
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| 73 | int code = http.getResponseCode();
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| 74 | log("Result code for " + spec + " was " + code,
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| 75 | Project.MSG_VERBOSE);
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| 76 | if (code > 0 && code < errorsBeginAt) {
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| 77 | return true;
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| 78 | } else {
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| 79 | return false;
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| 80 | }
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| 81 | }
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| 82 | } catch (java.io.IOException e) {
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| 83 | return false;
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| 84 | }
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| 85 | } catch (MalformedURLException e) {
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| 86 | throw new BuildException("Badly formed URL: " + spec, e);
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| 87 | }
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| 88 | return true;
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| 89 | }
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| 90 | }
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