first commit

.gitignore

@@ -0,0 +1,9 @@
+*.iml
+.idea
+target
+tmp
+logs
+dependency-reduced-pom.xml
+velocity.log
+*~
+build.log

LICENSE.txt

@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
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+
+   restex is Copyright 2013 Jonathan Cobb
+
+   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.

README.md

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+restex
+======
+
+Capture your REST integration tests and present them as examples for API consumers.
+
+Use this in your JUnit-style test cases to capture request/response conversations with context.
+
+    protected static TemplateCaptureTarget apiDocs = new TemplateCaptureTarget("target/api-examples");
+
+    @Override
+    protected HttpClient getHttpClient() {
+        return new DefaultHttpClient(new RestexClientConnectionManager(apiDocs));
+    }
+
+    @After
+    public void commitDocCapture () throws Exception {
+        apiDocs.commit();
+    }
+
+    @AfterClass
+    public static void finalizeDocCapture () throws Exception {
+        apiDocs.close();
+    }
+
+    @Test
+    public void someTest() throws Exception {
+        apiDocs.startRecording("some class of operations", "this particular operation");
+        apiDocs.addNote("going to do step #1");
+        ... do step 1, something that will use the HttpClient from getHttpClient() ...
+        apiDocs.addNote("going to do step #2");
+        ... do step 2, something that will use the HttpClient from getHttpClient() ...
+    }
+
+    @Test
+    public void anotherTest() throws Exception {
+        apiDocs.startRecording("some class of operations", "another particular operation");
+        apiDocs.addNote("going to do step #1");
+        ... do step 1, something that will use the HttpClient from getHttpClient() ...
+        apiDocs.addNote("going to do step #2");
+        ... do step 2, something that will use the HttpClient from getHttpClient() ...
+    }

pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+
+<!--
+(c) Copyright 2013 Jonathan Cobb
+This code is available under the Apache License, version 2: http://www.apache.org/licenses/LICENSE-2.0.html
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.cobbzilla</groupId>
+        <artifactId>cobbzilla-parent</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>restex</artifactId>
+    <name>restex</name>
+    <version>1.0.1-SNAPSHOT</version>
+    <packaging>jar</packaging>
+
+    <licenses>
+        <license>
+            <name>The Apache Software License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+            <distribution>repo</distribution>
+        </license>
+    </licenses>
+
+    <scm>
+        <url>http://github.com/cobbzilla/restex</url>
+        <connection>scm:git:git@github.com:cobbzilla/restex.git</connection>
+        <developerConnection>scm:git:git@github.com:cobbzilla/restex.git</developerConnection>
+    </scm>
+
+    <dependencies>
+
+        <!-- httpclient -->
+        <dependency>
+            <groupId>org.apache.httpcomponents</groupId>
+            <artifactId>httpcore</artifactId>
+            <version>${httpcore.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.httpcomponents</groupId>
+            <artifactId>httpclient</artifactId>
+            <version>${httpclient.version}</version>
+        </dependency>
+
+        <!-- Logging -->
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+            <version>${slf4j.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>jcl-over-slf4j</artifactId>
+            <version>${slf4j.version}</version>
+            <scope>runtime</scope>
+        </dependency>
+
+        <!-- Testing -->
+        <dependency>
+            <groupId>org.eclipse.jetty</groupId>
+            <artifactId>jetty-server</artifactId>
+            <version>${jetty.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.eclipse.jetty</groupId>
+            <artifactId>jetty-http</artifactId>
+            <version>${jetty.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <!-- auto-generate java boilerplate -->
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>${lombok.version}</version>
+            <scope>compile</scope>
+        </dependency>
+
+        <!-- handlebars templates -->
+        <dependency>
+            <groupId>com.github.jknack</groupId>
+            <artifactId>handlebars</artifactId>
+            <version>${handlebars.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.github.jknack</groupId>
+            <artifactId>handlebars-jackson2</artifactId>
+            <version>${handlebars.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>commons-io</groupId>
+            <artifactId>commons-io</artifactId>
+            <version>${commons-io.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <!-- use Java 11 -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>2.3.2</version>
+                <configuration>
+                    <source>11</source>
+                    <target>11</target>
+                    <showWarnings>true</showWarnings>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

src/main/java/org/cobbzilla/restex/RestexCaptureTarget.java

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+package org.cobbzilla.restex;
+
+import java.io.IOException;
+
+public interface RestexCaptureTarget {
+
+    public void requestUri (String method, String uri);
+
+    public void requestHeader(String name, String value);
+
+    public void requestEntity(String entityData);
+
+    public void responseStatus(int statusCode, String reasonPhrase, String protocolVersion);
+
+    public void responseHeader(String name, String value);
+
+    public void responseEntity(String entityData);
+
+    public void commit() throws IOException;
+
+    public void setBinaryRequest(String hint);
+    public void setBinaryResponse(String hint);
+}

src/main/java/org/cobbzilla/restex/RestexClientConnection.java

@@ -0,0 +1,108 @@
+package org.cobbzilla.restex;
+
+import lombok.Cleanup;
+import lombok.Delegate;
+import org.apache.commons.io.IOUtils;
+import org.apache.http.*;
+import org.apache.http.conn.ManagedHttpClientConnection;
+import org.apache.http.entity.BasicHttpEntity;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.StringWriter;
+
+public class RestexClientConnection implements ManagedHttpClientConnection {
+
+    private interface ConnectionIO {
+        void sendRequestHeader(HttpRequest httpRequest) throws HttpException, IOException;
+        void sendRequestEntity(HttpEntityEnclosingRequest httpEntityEnclosingRequest) throws HttpException, IOException;
+        HttpResponse receiveResponseHeader() throws HttpException, IOException;
+        void receiveResponseEntity(HttpResponse httpResponse) throws HttpException, IOException;
+    }
+
+    @Delegate(excludes=ConnectionIO.class, types={ManagedHttpClientConnection.class, HttpConnection.class})
+    private final ManagedHttpClientConnection delegate;
+
+    private final RestexCaptureTarget target;
+
+    public RestexClientConnection(ManagedHttpClientConnection connection, RestexCaptureTarget target) {
+        this.delegate = connection;
+        this.target = target;
+    }
+
+    @Override
+    public void sendRequestHeader(HttpRequest httpRequest) throws HttpException, IOException {
+        target.requestUri(httpRequest.getRequestLine().getMethod(), httpRequest.getRequestLine().getUri());
+        final Header[] headers = httpRequest.getAllHeaders();
+        for (Header header : headers) {
+            target.requestHeader(header.getName(), header.getValue());
+        }
+        delegate.sendRequestHeader(httpRequest);
+    }
+
+    @Override
+    public void sendRequestEntity(HttpEntityEnclosingRequest httpEntityEnclosingRequest) throws HttpException, IOException {
+
+        // Read the entire request into a String
+        StringWriter writer = new StringWriter();
+        final HttpEntity entity = httpEntityEnclosingRequest.getEntity();
+        final String entityData;
+        if (entity != null && entity.getContent() != null) {
+            @Cleanup final InputStreamReader in = new InputStreamReader(entity.getContent());
+            IOUtils.copyLarge(in, writer);
+            entityData = writer.toString();
+        } else {
+            entityData = "";
+        }
+        target.requestEntity(entityData);
+
+        // Re-create the entity since we already read the entire InputStream
+        httpEntityEnclosingRequest.setEntity(buildEntity(entityData));
+
+        delegate.sendRequestEntity(httpEntityEnclosingRequest);
+    }
+
+    @Override
+    public HttpResponse receiveResponseHeader() throws HttpException, IOException {
+        final HttpResponse httpResponse = delegate.receiveResponseHeader();
+
+        target.responseStatus(httpResponse.getStatusLine().getStatusCode(), httpResponse.getStatusLine().getReasonPhrase(), httpResponse.getStatusLine().getProtocolVersion().toString());
+
+        final Header[] headers = httpResponse.getAllHeaders();
+        for (Header header : headers) {
+            target.responseHeader(header.getName(), header.getValue());
+        }
+        return httpResponse;
+    }
+
+    @Override
+    public void receiveResponseEntity(HttpResponse response) throws HttpException, IOException {
+
+        delegate.receiveResponseEntity(response);
+
+        // Read the entire response into a String
+        StringWriter writer = new StringWriter();
+        final HttpEntity entity = response.getEntity();
+        final String entityData;
+        if (entity != null && entity.getContent() != null) {
+            @Cleanup final InputStreamReader in = new InputStreamReader(entity.getContent());
+            IOUtils.copyLarge(in, writer);
+            entityData = writer.toString();
+        } else {
+            entityData = null;
+        }
+        target.responseEntity(entityData);
+
+        // Re-create the entity since we already read the entire InputStream
+        response.setEntity(buildEntity(entityData));
+    }
+
+    private BasicHttpEntity buildEntity(String entityData) {
+        final BasicHttpEntity entity = new BasicHttpEntity();
+        entity.setContentLength(entityData == null ? 0 : entityData.length());
+        entity.setContent(new ByteArrayInputStream(entityData == null ? "".getBytes() : entityData.getBytes()));
+        return entity;
+    }
+
+}

src/main/java/org/cobbzilla/restex/RestexClientConnectionFactory.java

@@ -0,0 +1,22 @@
+package org.cobbzilla.restex;
+
+import org.apache.http.config.ConnectionConfig;
+import org.apache.http.conn.HttpConnectionFactory;
+import org.apache.http.conn.ManagedHttpClientConnection;
+import org.apache.http.conn.routing.HttpRoute;
+import org.apache.http.impl.conn.ManagedHttpClientConnectionFactory;
+
+public class RestexClientConnectionFactory implements HttpConnectionFactory<HttpRoute, ManagedHttpClientConnection> {
+
+    private RestexClientConnectionManager connectionManager;
+    private ManagedHttpClientConnectionFactory connectionFactory = new ManagedHttpClientConnectionFactory();
+
+    public RestexClientConnectionFactory(RestexClientConnectionManager connectionManager) {
+        this.connectionManager = connectionManager;
+    }
+
+    @Override
+    public ManagedHttpClientConnection create(HttpRoute route, ConnectionConfig config) {
+        return new RestexClientConnection(connectionFactory.create(route, config), connectionManager.getTarget());
+    }
+}

src/main/java/org/cobbzilla/restex/RestexClientConnectionManager.java

@@ -0,0 +1,35 @@
+package org.cobbzilla.restex;
+
+import lombok.Delegate;
+import lombok.Getter;
+import org.apache.http.client.HttpClient;
+import org.apache.http.config.Registry;
+import org.apache.http.config.RegistryBuilder;
+import org.apache.http.conn.HttpClientConnectionManager;
+import org.apache.http.conn.socket.ConnectionSocketFactory;
+import org.apache.http.conn.socket.PlainConnectionSocketFactory;
+import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
+import org.apache.http.impl.client.HttpClientBuilder;
+import org.apache.http.impl.conn.BasicHttpClientConnectionManager;
+
+public class RestexClientConnectionManager implements HttpClientConnectionManager {
+
+    @Delegate private final BasicHttpClientConnectionManager delegate;
+    @Getter private final RestexCaptureTarget target;
+
+    private static Registry<ConnectionSocketFactory> getDefaultRegistry() {
+        return RegistryBuilder.<ConnectionSocketFactory>create()
+                .register("http", PlainConnectionSocketFactory.getSocketFactory())
+                .register("https", SSLConnectionSocketFactory.getSocketFactory())
+                .build();
+    }
+
+    public RestexClientConnectionManager(RestexCaptureTarget target) {
+        this.delegate = new BasicHttpClientConnectionManager(getDefaultRegistry(), new RestexClientConnectionFactory(this));
+        this.target = target;
+    }
+
+    public HttpClient getHttpClient () {
+        return HttpClientBuilder.create().setConnectionManager(new RestexClientConnectionManager(target)).build();
+    }
+}

src/main/java/org/cobbzilla/restex/RestexClientConnectionRequest.java

@@ -0,0 +1,28 @@
+package org.cobbzilla.restex;
+
+import org.apache.http.conn.ConnectionPoolTimeoutException;
+import org.apache.http.conn.ConnectionRequest;
+import org.apache.http.conn.ManagedHttpClientConnection;
+
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+
+public class RestexClientConnectionRequest implements ConnectionRequest {
+
+    private final ConnectionRequest delegate;
+    private final RestexCaptureTarget target;
+
+    public RestexClientConnectionRequest(ConnectionRequest clientConnectionRequest, RestexCaptureTarget target) {
+        this.delegate = clientConnectionRequest;
+        this.target = target;
+    }
+
+    @Override public boolean cancel() { return delegate.cancel(); }
+
+    @Override
+    public ManagedHttpClientConnection get(long timeout, TimeUnit tunit) throws InterruptedException, ExecutionException, ConnectionPoolTimeoutException {
+        final ManagedHttpClientConnection connection = (ManagedHttpClientConnection) delegate.get(timeout, tunit);
+        return new RestexClientConnection(connection, target);
+    }
+
+}

src/main/java/org/cobbzilla/restex/targets/SimpleCaptureTarget.java

@@ -0,0 +1,92 @@
+package org.cobbzilla.restex.targets;
+
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+import org.cobbzilla.restex.RestexCaptureTarget;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+@ToString(of={"requestMethod", "requestUri", "requestEntity", "note"})
+public class SimpleCaptureTarget implements RestexCaptureTarget {
+
+    @Getter @Setter private int statusCode;
+    @Getter @Setter private String reasonPhrase;
+    @Getter @Setter private String protocolVersion;
+
+    @Getter @Setter private String requestMethod;
+    @Getter @Setter private String requestUri;
+    @Getter @Setter private Map<String, String> requestHeaders = new LinkedHashMap<>();
+    @Getter @Setter private Map<String, String> responseHeaders = new LinkedHashMap<>();
+
+    @Getter @Setter private String requestEntity;
+    @Getter @Setter private String responseEntity;
+
+    @Getter @Setter private String binaryRequest;
+    @Getter @Setter private String binaryResponse;
+
+    @Getter @Setter private String note;
+    public void appendNote (String n) { if (note == null) { note = n ; } else { note += "\n" + n; } }
+
+    public List<String> getRequestHeaderList () { return buildHeaderList(requestHeaders); }
+    public List<String> getResponseHeaderList () { return buildHeaderList(responseHeaders); }
+
+    public String getResponseLine () { return statusCode + " " + (reasonPhrase == null ? "" : reasonPhrase) + " " + protocolVersion; }
+
+    private List<String> buildHeaderList(Map<String, String> headers) {
+        List<String> headerList = new ArrayList<>();
+        for (String header : headers.keySet()) {
+            headerList.add(header + ": " + headers.get(header));
+        }
+        return headerList;
+    }
+
+    @Override public void requestUri (String method, String uri) {
+        setRequestMethod(method);
+        setRequestUri(uri);
+    }
+
+    @Override public void requestHeader(String name, String value) { requestHeaders.put(name, value); }
+
+    @Override public void requestEntity(String entityData) {
+        if (binaryRequest != null) {
+            requestEntity = "Binary request: " + binaryRequest;
+        } else {
+            requestEntity = entityData;
+        }
+    }
+
+    @Override public void responseStatus(int statusCode, String reasonPhrase, String protocolVersion) {
+        this.statusCode = statusCode; this.reasonPhrase = reasonPhrase; this.protocolVersion = protocolVersion;
+    }
+
+    @Override public void responseHeader(String name, String value) { responseHeaders.put(name, value); }
+
+    @Override public void responseEntity(String entityData) {
+        if (binaryResponse != null) {
+            responseEntity = "Binary response: " + binaryResponse;
+        } else {
+            responseEntity = entityData;
+        }
+    }
+
+    @Override public void commit() throws IOException {}
+
+    public void reset () {
+        requestUri = null;
+        requestHeaders = new LinkedHashMap<>();
+        requestEntity = null;
+
+        statusCode = -1;
+        reasonPhrase = null;
+        protocolVersion = null;
+
+        responseHeaders = new LinkedHashMap<>();
+        responseEntity = null;
+    }
+
+}

src/main/java/org/cobbzilla/restex/targets/TemplateCaptureTarget.java

@@ -0,0 +1,294 @@
+package org.cobbzilla.restex.targets;
+
+import com.github.jknack.handlebars.Handlebars;
+import com.github.jknack.handlebars.Helper;
+import com.github.jknack.handlebars.Options;
+import com.github.jknack.handlebars.Template;
+import com.github.jknack.handlebars.io.ClassPathTemplateLoader;
+import lombok.AllArgsConstructor;
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.extern.slf4j.Slf4j;
+import org.cobbzilla.restex.RestexCaptureTarget;
+
+import java.io.*;
+import java.util.*;
+
+@Slf4j
+public class TemplateCaptureTarget implements RestexCaptureTarget {
+
+    public static final String SCOPE_HTTP = "http";
+    public static final String SCOPE_ANCHOR = "anchor";
+    public static final String SCOPE_FILES = "files";
+    public static final String HTML_SUFFIX = ".html";
+
+    public static final String FOOTER_START = "@@FOOTER@@";
+    public static final String INDEX_INSERTION_POINT = "@@MORE-INDEX-FILES@@";
+
+    public static final String DEFAULT_INDEX_TEMPLATE = "defaultIndex";
+    public static final String DEFAULT_INDEX_MORE_TEMPLATE = "defaultIndexMore";
+    public static final String DEFAULT_HEADER_TEMPLATE = "defaultHeader";
+    public static final String DEFAULT_FOOTER_TEMPLATE = "defaultFooter";
+    public static final String DEFAULT_ENTRY_TEMPLATE = "defaultEntry";
+
+    @Getter private File baseDir;
+
+    private final Template indexTemplate;
+    private final Template indexMoreTemplate;
+    private final Template headerTemplate;
+    private final Template footerTemplate;
+    private final Template entryTemplate;
+
+    private SortedSet<ContextFile> contextFiles = new TreeSet<>();
+    private Map<String, ContextFile> contextFileMap = new HashMap<>();
+    private final Set<File> filesOpen = new HashSet<>();
+
+    // current state, initialized in startRecording, reset in commit
+    private SimpleCaptureTarget currentCapture = null;
+    @Getter private final List<SimpleCaptureTarget> captures = new ArrayList<>();
+    private boolean recording = false;
+    @Getter private String context = "";
+    @Getter private String comment = "";
+
+    public TemplateCaptureTarget (String baseDir) {
+        this(new File(baseDir), DEFAULT_INDEX_TEMPLATE, DEFAULT_INDEX_MORE_TEMPLATE, DEFAULT_HEADER_TEMPLATE, DEFAULT_FOOTER_TEMPLATE, DEFAULT_ENTRY_TEMPLATE);
+    }
+
+    public TemplateCaptureTarget (File baseDir) {
+        this(baseDir, DEFAULT_INDEX_TEMPLATE, DEFAULT_INDEX_MORE_TEMPLATE, DEFAULT_HEADER_TEMPLATE, DEFAULT_FOOTER_TEMPLATE, DEFAULT_ENTRY_TEMPLATE);
+    }
+
+    public TemplateCaptureTarget (File baseDir,
+                                  String indexTemplate,
+                                  String indexMoreTemplate,
+                                  String headerTemplate,
+                                  String footerTemplate,
+                                  String entryTemplate) {
+        this.baseDir = baseDir;
+        if (!baseDir.exists() && !baseDir.mkdirs()) {
+            throw new IllegalArgumentException("baseDir does not exist and could not be created: "+baseDir.getAbsolutePath());
+        }
+
+        final Handlebars handlebars = new Handlebars(new ClassPathTemplateLoader("/"));
+        handlebars.registerHelper("nl2br", new Helper<Object>() {
+            public CharSequence apply(Object src, Options options) {
+                return src == null || src.toString().isEmpty() ? "" : new Handlebars.SafeString(src.toString().replace("\n", "<br/>"));
+            }
+        });
+
+        this.indexTemplate = compileOrDie(indexTemplate, handlebars);
+        this.indexMoreTemplate = compileOrDie(indexMoreTemplate, handlebars);
+        this.headerTemplate = compileOrDie(headerTemplate, handlebars);
+        this.footerTemplate = compileOrDie(footerTemplate, handlebars);
+        this.entryTemplate = compileOrDie(entryTemplate, handlebars);
+    }
+
+    public Template compileOrDie(String template, Handlebars handlebars) {
+        try {
+            return handlebars.compile(template);
+        } catch (IOException e) {
+            throw new IllegalStateException("Error compiling template '"+ template+"': "+e, e);
+        }
+    }
+
+    public synchronized void startRecording (String context, String comment) {
+        if (recording) {
+            log.warn("startRecording: cannot start "+context+"/"+comment+", already recording "+this.context+"/"+this.comment);
+            try {
+                if (!captures.isEmpty()) commit();
+            } catch (IOException e) {
+                log.error("startRecording: error committing docs: "+e);
+            } finally {
+                reset();
+            }
+        }
+        this.context = context;
+        this.comment = comment;
+        currentCapture = new SimpleCaptureTarget();
+        recording = true;
+    }
+
+    @Override public void requestUri(String method, String uri) {
+        if (currentCapture != null) currentCapture.requestUri(method, uri);
+    }
+
+    @Override public void requestHeader(String name, String value) { if (recording) currentCapture.requestHeader(name, value); }
+    @Override public void requestEntity(String entityData) { if (recording) currentCapture.requestEntity(entityData); }
+    @Override public void responseStatus(int statusCode, String reasonPhrase, String protocolVersion) {
+        if (recording) currentCapture.responseStatus(statusCode, reasonPhrase, protocolVersion);
+    }
+    @Override public void responseHeader(String name, String value) { if (recording) currentCapture.responseHeader(name, value); }
+    @Override public synchronized void responseEntity(String entityData) {
+        if (recording) {
+            currentCapture.responseEntity(entityData);
+            captures.add(currentCapture);
+            currentCapture = new SimpleCaptureTarget();
+        }
+    }
+
+    public void addNote (String note) { if (recording) currentCapture.appendNote(note); }
+
+    @Override public void setBinaryRequest (String type) { if (recording) currentCapture.setBinaryRequest(type); }
+    @Override public void setBinaryResponse (String type) { if (recording) currentCapture.setBinaryResponse(type); }
+
+    public synchronized void commit () throws IOException {
+
+        final String fileBaseName = context.replaceAll("[^A-Za-z0-9]", "_");
+        if (fileBaseName == null || fileBaseName.length() == 0) {
+            log.warn("No context name set (not committing). currentCapture="+currentCapture);
+            return;
+        }
+        final String uriFileName = fileBaseName + HTML_SUFFIX;
+
+        ContextFile contextFile = contextFileMap.get(context);
+        if (contextFile == null) {
+            contextFile = new ContextFile(context, uriFileName);
+            contextFileMap.put(context, contextFile);
+        }
+        contextFiles.add(contextFile);
+
+        String anchor = comment.replaceAll("[^A-Za-z0-9]", "_");
+        contextFile.add(new ContextExample(anchor, comment));
+
+        final File uriFile = new File(baseDir, uriFileName);
+        final boolean exists = uriFile.exists();
+
+        synchronized (filesOpen) {
+            if (!exists) {
+                // first time writing to the file, so write the header
+                filesOpen.add(uriFile);
+                try (FileWriter writer = new FileWriter(uriFile)) {
+                    render(headerTemplate, writer);
+                }
+            } else {
+                // file exists -- have we written to it yet?
+                if (!filesOpen.contains(uriFile)) {
+                    // file exists but we have not written to it, so rewrite the file without the footer
+                    removeFooter(uriFile);
+                }
+            }
+        }
+
+        try (FileWriter writer = new FileWriter(uriFile, true)) {
+            // append the entry
+            renderEntry(entryTemplate, writer, anchor);
+        }
+
+        reset();
+    }
+
+    public synchronized void reset() {
+        recording = false;
+        context = "";
+        comment = "";
+        captures.clear();
+        currentCapture = null;
+    }
+
+    public synchronized void close () throws IOException {
+        if (recording) commit();
+        for (File f : filesOpen) {
+            try (FileWriter writer = new FileWriter(f, true)) {
+                render(footerTemplate, writer);
+            }
+        }
+        final File indexFile = new File(baseDir, "index.html");
+        if (!indexFile.exists()) {
+            try (FileWriter writer = new FileWriter(indexFile)) {
+                renderIndex(indexTemplate, writer);
+            }
+        } else {
+            StringWriter writer = new StringWriter();
+            renderIndex(indexMoreTemplate, writer);
+            replaceInFile(indexFile, INDEX_INSERTION_POINT, writer.toString());
+        }
+        filesOpen.clear();
+        contextFiles.clear();
+        contextFileMap.clear();
+    }
+
+    protected synchronized void apply(final Template template, Writer writer, Map<String, Object> scope) {
+        synchronized (captures) {
+            try {
+                template.apply(scope, writer);
+            } catch (IOException e) {
+                throw new IllegalStateException("Error applying template '" + template.filename() + "': " + e, e);
+            }
+        }
+    }
+
+    protected void renderEntry(Template template, Writer writer, String anchor) {
+        Map<String, Object> scope = new HashMap<>();
+        scope.put(SCOPE_HTTP, this);
+        scope.put(SCOPE_ANCHOR, anchor);
+        apply(template, writer, scope);
+    }
+
+    protected void render(Template template, Writer writer) {
+        Map<String, Object> scope = new HashMap<>();
+        scope.put(SCOPE_HTTP, this);
+        apply(template, writer, scope);
+    }
+
+    protected void renderIndex(Template template, Writer writer) {
+        Map<String, Object> scope = new HashMap<>();
+        scope.put(SCOPE_FILES, contextFiles);
+        apply(template, writer, scope);
+    }
+
+    private void removeFooter(File uriFile) throws IOException {
+        File temp = File.createTempFile(getClass().getSimpleName(), HTML_SUFFIX, uriFile.getParentFile());
+        try (BufferedReader reader = new BufferedReader(new FileReader(uriFile))) {
+            try (FileWriter writer = new FileWriter(temp)) {
+                String line;
+                while ((line = reader.readLine()) != null) {
+                    if (line.contains(FOOTER_START)) break;
+                    writer.write(line + "\n");
+                }
+            }
+        }
+        if (!temp.renameTo(uriFile)) {
+            throw new IllegalStateException("Error rewriting footer in file: "+uriFile.getAbsolutePath());
+        }
+    }
+
+    private void replaceInFile(File file, String insertionPoint, String data) throws IOException {
+        File temp = File.createTempFile(getClass().getSimpleName(), HTML_SUFFIX, file.getParentFile());
+        try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
+            try (FileWriter writer = new FileWriter(temp)) {
+                String line;
+                while ((line = reader.readLine()) != null) {
+                    if (line.contains(insertionPoint)) {
+                        writer.write(data);
+                    }
+                    writer.write(line + "\n");
+                }
+            }
+        }
+        if (!temp.renameTo(file)) {
+            throw new IllegalStateException("Error rewriting file: "+file.getAbsolutePath());
+        }
+    }
+
+    @AllArgsConstructor @EqualsAndHashCode(of="context")
+    class ContextFile implements Comparable {
+
+        @Getter @Setter public String context;
+        @Getter @Setter public String fsPath;
+
+        @Getter public final List<ContextExample> examples = new ArrayList<>();
+        public void add(ContextExample contextExample) { examples.add(contextExample); }
+
+        @Override
+        public int compareTo(Object o) {
+            return (o instanceof ContextFile) ? context.compareTo(((ContextFile) o).getContext()) : 0;
+        }
+    }
+
+    @AllArgsConstructor
+    class ContextExample {
+        @Getter @Setter public String anchor;
+        @Getter @Setter public String description;
+    }
+}

src/main/resources/defaultEntry.hbs

@@ -0,0 +1,69 @@
+<a name="{{anchor}}"></a>
+
+<div class="request_details" style="margin-top: 10px"><p class="title">TEST CASE: {{http.comment}}</p></div>
+
+<table>
+    <thead>
+        <tr><td class="summary" colspan="4">SUMMARY</td></tr>
+        <tr>
+            <td class="type_column">Type</td>
+            <td >Request</td>
+            <td class="response_column">Response</td>
+            <td >Notes</td>
+        </tr>
+    </thead>
+    <tbody>
+        {{#each http.captures}}
+        <tr>
+            <td nowrap=""><div class="block margin_0">{{requestMethod}}</div></td>
+            <td nowrap=""><a href="#{{anchor}}_{{@index}}">{{requestUri}}</a></td>
+            <td nowrap="">{{responseLine}}</td>
+            <td nowrap="">{{nl2br note}}</td>
+        </tr>
+        {{/each}}
+    </tbody>
+</table>
+
+{{#each http.captures}}
+
+    <a name="{{anchor}}_{{@index}}"></a>
+
+    <div class="request_details">
+        <div class="block margin_0" style="margin-right: 5px">{{requestMethod}}</div>{{requestUri}}
+        <div class="request_description">{{nl2br note}}</div>
+    </div>
+
+    <div class="request_response_container">
+        <p class="request">Request</p>
+
+        <p class="item_description">header</p>
+        <div class="request_header">
+            {{#each requestHeaderList}}
+                <p >{{this}}</p>
+            {{/each}}
+        </div>
+
+        <p class="item_description">body</p>
+        <div class="request_body">
+            <pre>{{{requestEntity}}}</pre>
+        </div>
+    </div>
+
+    <div class="request_response_container">
+        <p class="request">Response</p>
+
+        <p class="item_description">header</p>
+        <div class="request_header">
+            <p >{{responseLine}}</p>
+            {{#each responseHeaderList}}
+                <p>{{this}}<p/>
+            {{/each}}
+        </div>
+
+        <p class="item_description">body</p>
+        <div class="request_body">
+        <pre>{{{responseEntity}}}</pre>
+        </div>
+    </div>
+
+{{/each}}

src/main/resources/defaultFooter.hbs

@@ -0,0 +1,3 @@
+<!-- @@FOOTER@@ must be first line in footer file -->
+</body>
+</html>

src/main/resources/defaultHeader.hbs

@@ -0,0 +1,147 @@
+<html>
+<head>
+    <title>Example HTTP exchanges for {{http.requestUri}}</title>
+    <style type="text/css">
+
+        @font-face {
+            font-family: "Kimberley";
+            src: url(http://www.princexml.com/fonts/larabie/ »
+            kimberle.ttf) format("truetype");
+        }
+
+        *{
+            font-family: "Arial", sans-serif
+        }
+
+        table{
+            min-width: 800px;
+        }
+
+        td{
+            vertical-align: middle;
+            border: 1px solid #000000;
+            border-width: 0px 0px 1px 0px;
+            text-align: left;
+            padding: 7px;
+            font-size: 12px;
+            font-family: Arial;
+            font-weight: normal;
+            color: #000000;
+        }
+
+        tr{
+            margin: 0;
+            padding: 0;
+            border: 0;
+            font-size: 100%;
+            font: inherit;
+        }
+
+        pre{
+            margin: 0px;
+            font-size: 13px;
+        }
+
+        .border{
+            border: 1px solid gray;
+        }
+
+        .centered{
+            text-align: center
+        }
+
+        .block{
+            background-color: #03A2CC;
+            display: inline-block;
+            padding: 5px;
+            border-radius: 5px;
+            color: white;
+        }
+
+        .type_column{
+            width: 70px;
+        }
+
+        .response_column{
+            width: 100px;
+        }
+
+        .margin_0{
+            margin: 0px;
+        }
+
+        .summary{
+            font-size: 20px;
+            color: #03A2CC;;
+        }
+
+        .request_details{
+            height: 28px;
+            background-color: rgba(156, 156, 156, 0.48);
+            padding: 10px;
+            color: #6F6F6F;
+            margin-top: 35px;
+            margin-bottom: 25px;
+        }
+
+        .title{
+            margin: 3px;
+            font-size: 20px;
+        }
+
+        .request_description{
+            display: inline-block;
+            float: right;
+            margin-top: 4px;
+        }
+        .request_header{
+            width: 500px;
+            padding: 10px;
+            color: white;
+            background-color: #353535;
+            margin-bottom: 10px;
+        }
+        .request_body{
+            width: 500px;
+            padding: 10px;
+            color: white;
+            background-color: #353535;
+            margin-bottom: 10px;
+        }
+
+        .request_header>p{
+            margin: 0px;
+            font-size: 13px;
+        }
+
+        .request_body>p{
+            margin: 0px;
+            font-size: 13px;
+        }
+
+        .item_description{
+            margin-bottom: 0px;
+        }
+
+        .request{
+            font-size: 20px;
+            margin: 0px;
+        }
+
+        .request_response_container{
+            border: 1px solid rgba(158, 158, 158, 0.52);
+            border-radius: 5px;
+            padding: 10px;
+            margin-bottom: 15px;
+        }
+
+        .main_container{
+            width: 800px;
+            margin-left: auto;
+            margin-right: auto;
+        }
+
+    </style>
+</head>
+<body>
+

src/main/resources/defaultIndex.hbs

@@ -0,0 +1,85 @@
+<html>
+    <head>
+        <title>Examples of all HTTP exchanges with this app</title>
+        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
+        <style type="text/css">
+            a{
+                color: white;
+                text-decoration: inherit;
+                font-variant: small-caps;
+                font-family: sans-serif;
+            }
+            .container{
+                width: 500px;
+                padding: 10px;
+                font-family: sans-serif;
+            }
+            .item{ margin: 10px; font-family: sans-serif;}
+            .subItem{ margin: 5px; font-family: sans-serif;}
+            .container li > a > span {
+                float: right;
+                font-size: 19px;
+                font-weight: bolder;
+                font-family: sans-serif;
+            }
+            .container li > a > span {
+                width: 20px;
+                height: 20px;
+                text-align: center;
+                font-family: sans-serif;
+            }
+            .container li.open > a > span:after { content: '\25b4'; }
+            .container li > a > span:after { content: '\25be'; }
+            .container li { list-style: none; }
+            .ic{ margin: 5px; }
+            .itemC{
+                margin: 5px;
+                padding: 5px;
+                padding-top: 9px;
+                min-height: 22px;
+                border-radius: 5px;
+                background-color: #03A2CC;
+                font-family: sans-serif;
+            }
+        </style>
+    </head>
+    <body>
+
+        <ul class="container">
+
+            {{#each files}}
+            <li class="itemC">
+                <a class="item" href="{{fsPath}}"><span class="openItem"></span>{{context}}</a>
+                <ul class="subItem">
+
+                    {{#each examples}}
+                    <li class="ic">
+                        <a href="{{fsPath}}#{{anchor}}">{{description}}</a>
+                    </li>
+                    {{/each}}
+
+                </ul>
+            </li>
+            {{/each}}
+            <!-- @@MORE-INDEX-FILES@@ -->
+        </ul>
+
+    </body>
+    <script type="text/javascript">
+        $(document).ready(function () {
+            var $subitem = $(".subitem");
+            $subitem.hide();
+            $('.itemC').removeClass('open');
+            $('.openItem').on("click", function (e) {
+                e.preventDefault();
+                isOpened = $($(this).parent().parent()).hasClass('open');
+                $('.itemC').removeClass('open');
+                $subitem.hide();
+                if(!isOpened){
+                    $('.subitem', $(this).parent().parent()).show();
+                    $($(this).parent().parent()).addClass('open');
+                }
+            });
+        });
+    </script>
+</html>

src/main/resources/defaultIndexMore.hbs

@@ -0,0 +1,14 @@
+{{#each files}}
+    <li class="itemC">
+        <a class="item" href="{{fsPath}}"><span class="openItem"></span>{{context}}</a>
+        <ul class="subItem">
+
+            {{#each examples}}
+                <li class="ic">
+                    <a href="{{fsPath}}#{{anchor}}">{{description}}</a>
+                </li>
+            {{/each}}
+
+        </ul>
+    </li>
+{{/each}}

src/test/java/org/cobbzilla/restex/RestexIT.java

@@ -0,0 +1,135 @@
+package org.cobbzilla.restex;
+
+import lombok.extern.slf4j.Slf4j;
+import org.apache.http.Header;
+import org.apache.http.HttpResponse;
+import org.apache.http.client.HttpClient;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.message.BasicHeader;
+import org.cobbzilla.restex.targets.SimpleCaptureTarget;
+import org.cobbzilla.restex.targets.TemplateCaptureTarget;
+import org.eclipse.jetty.server.Request;
+import org.eclipse.jetty.server.Server;
+import org.eclipse.jetty.server.handler.AbstractHandler;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.FileSystems;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Enumeration;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+@Slf4j
+public class RestexIT {
+
+    public static final int TEST_PORT = 19091;
+
+    private Server server;
+
+    class RestexTestHandler extends AbstractHandler {
+        @Override
+        public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
+            // do nothing
+            log.info("handle called.");
+            response.setStatus(200);
+            final Enumeration<String> headerNames = request.getHeaderNames();
+            while (headerNames.hasMoreElements()) {
+                String headerName = headerNames.nextElement();
+                response.addHeader(headerName, request.getHeader(headerName));
+            }
+            response.getWriter().write("foo");
+            response.getWriter().flush();
+            response.setContentLength("foo".length());
+        }
+    }
+
+    @Before
+    public void setUp () throws Exception {
+        server = new Server(TEST_PORT);
+        server.setHandler(new RestexTestHandler());
+        server.start();
+    }
+
+    @After public void tearDown () throws Exception { server.stop(); }
+
+    @Test
+    public void testSimpleCapture () throws Exception {
+        RestexCaptureTarget target = new SimpleCaptureTarget();
+        HttpClient httpClient = new RestexClientConnectionManager(target).getHttpClient();
+        HttpGet httpGet = new HttpGet("http://127.0.0.1:"+TEST_PORT+"/test");
+        String requestHeaderName1 = "foo-"+System.currentTimeMillis();
+        String requestHeaderValue1 = "bar-"+System.currentTimeMillis();
+        httpGet.addHeader(new BasicHeader(requestHeaderName1, requestHeaderValue1));
+
+        final HttpResponse response = httpClient.execute(httpGet);
+        final Map<String, String> responseHeaderMap = buildResponseHeaderMap(response);
+        assertTrue("didn't find response header", responseHeaderMap.containsKey(requestHeaderName1));
+        assertEquals("wrong request header value for "+requestHeaderName1, requestHeaderValue1, responseHeaderMap.get(requestHeaderName1));
+    }
+
+    @Test
+    public void testTemplateCapture () throws Exception {
+
+        File tempDir = createTempDir(new File(System.getProperty("java.io.tmpdir")), getClass().getSimpleName());
+        log.info("Writing to tempDir="+tempDir.getAbsolutePath());
+
+        TemplateCaptureTarget target = new TemplateCaptureTarget(tempDir, "testTemplateIndex", "testTemplateIndexMore", "testTemplateHeader", "testTemplateFooter", "testTemplateEntry");
+        HttpClient httpClient = new RestexClientConnectionManager(target).getHttpClient();
+
+        String header1;
+        String value1;
+        HttpGet httpGet;
+        HttpResponse response;
+
+        target.startRecording("test1", "a single request of /test goes like this");
+        httpGet = new HttpGet("http://127.0.0.1:"+TEST_PORT+"/test");
+        header1 = "foo-"+System.currentTimeMillis();
+        value1 = "bar-"+System.currentTimeMillis();
+        httpGet.addHeader(new BasicHeader(header1, value1));
+        response = httpClient.execute(httpGet);
+        httpGet.releaseConnection();
+        target.commit();
+
+        target.startRecording("test2", "a request of /test and then /test2 goes like this");
+        httpGet = new HttpGet("http://127.0.0.1:"+TEST_PORT+"/test");
+        header1 = "foo2-"+System.currentTimeMillis();
+        value1 = "bar2-"+System.currentTimeMillis();
+        httpGet.addHeader(new BasicHeader(header1, value1));
+        response = httpClient.execute(httpGet);
+        httpGet.releaseConnection();
+
+        httpGet = new HttpGet("http://127.0.0.1:"+TEST_PORT+"/test2");
+        header1 = "foo-"+System.currentTimeMillis();
+        value1 = "bar-"+System.currentTimeMillis();
+        httpGet.addHeader(new BasicHeader(header1, value1));
+        response = httpClient.execute(httpGet);
+        httpGet.releaseConnection();
+
+        target.close();
+    }
+
+    private Map<String, String> buildResponseHeaderMap(HttpResponse response) {
+        Map<String, String> headers = new LinkedHashMap<>();
+        for (Header header : response.getAllHeaders()) {
+            headers.put(header.getName(), header.getValue());
+        }
+        return headers;
+    }
+
+    public static File createTempDir(File parentDir, String prefix) throws IOException {
+        Path parent = FileSystems.getDefault().getPath(parentDir.getAbsolutePath());
+        return new File(Files.createTempDirectory(parent, prefix).toAbsolutePath().toString());
+    }
+
+}

src/test/resources/testTemplateEntry.hbs

@@ -0,0 +1,20 @@
+<hr/>
+
+<h2>{{http.comment}}</h2>
+
+<h3>Request</h3>
+<em>{{http.requestMethod}} {{http.requestUri}}</em>
+{{#each http.requestHeaderList}}
+{{this}}<br/>
+{{/each}}
+<br/>
+{{http.requestEntity}}
+
+<h3>Response</h3>
+{{http.responseLine}}
+{{#each http.responseHeaderList}}
+{{this}}<br/>
+{{/each}}
+<br/>
+{{http.responseEntity}}
+

src/test/resources/testTemplateFooter.hbs

@@ -0,0 +1,3 @@
+<!-- @@FOOTER@@ must be first line in footer file -->
+</body>
+</html>

src/test/resources/testTemplateHeader.hbs

@@ -0,0 +1,6 @@
+<html>
+<head>
+  <title>Example HTTP exchanges for {{http.requestUri}}</title>
+</head>
+<body>
+

src/test/resources/testTemplateIndex.hbs

@@ -0,0 +1,15 @@
+<html>
+<head>
+  <title>Examples of all HTTP exchanges with this app</title>
+</head>
+<body>
+
+<ul>
+{{#each files}}
+  <li><a href="{{fsPath}}">{{context}}</a></li>
+{{/each}}
+<!-- @@MORE-INDEX-FILES@@ -->
+</ul>
+
+</body>
+</html>

src/test/resources/testTemplateIndexMore.hbs

@@ -0,0 +1,3 @@
+{{#each files}}
+  <li><a href="{{fsPath}}">{{context}}</a></li>
+{{/each}}