first commit

5 years ago · 2ea8adc4ed
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,9 @@
 *.iml
 .idea
 target
 tmp
 logs
 dependency-reduced-pom.xml
 velocity.log
 *~
 build.log
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -0,0 +1,202 @@

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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

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--- a/README.md
+++ b/README.md
@@ -0,0 +1,41 @@
 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() ...
    }
--- a/pom.xml
+++ b/pom.xml
@@ -0,0 +1,119 @@
 <?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>
--- a/src/main/java/org/cobbzilla/restex/RestexCaptureTarget.java
+++ b/src/main/java/org/cobbzilla/restex/RestexCaptureTarget.java
@@ -0,0 +1,23 @@
 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);
 }
--- a/src/main/java/org/cobbzilla/restex/RestexClientConnection.java
+++ b/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;
    }

 }
--- a/src/main/java/org/cobbzilla/restex/RestexClientConnectionFactory.java
+++ b/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());
    }
 }
--- a/src/main/java/org/cobbzilla/restex/RestexClientConnectionManager.java
+++ b/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();
    }
 }
--- a/src/main/java/org/cobbzilla/restex/RestexClientConnectionRequest.java
+++ b/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);
    }

 }
--- a/src/main/java/org/cobbzilla/restex/targets/SimpleCaptureTarget.java
+++ b/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;
    }

 }
--- a/src/main/java/org/cobbzilla/restex/targets/TemplateCaptureTarget.java
+++ b/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;
    }
 }
--- a/src/main/resources/defaultEntry.hbs
+++ b/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}}
--- a/src/main/resources/defaultFooter.hbs
+++ b/src/main/resources/defaultFooter.hbs
@@ -0,0 +1,3 @@
 <!-- @@FOOTER@@ must be first line in footer file -->
 </body>
 </html>
--- a/src/main/resources/defaultHeader.hbs
+++ b/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>

--- a/src/main/resources/defaultIndex.hbs
+++ b/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>
--- a/src/main/resources/defaultIndexMore.hbs
+++ b/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}}
--- a/src/test/java/org/cobbzilla/restex/RestexIT.java
+++ b/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());
    }

 }
--- a/src/test/resources/testTemplateEntry.hbs
+++ b/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}}

--- a/src/test/resources/testTemplateFooter.hbs
+++ b/src/test/resources/testTemplateFooter.hbs
@@ -0,0 +1,3 @@
 <!-- @@FOOTER@@ must be first line in footer file -->
 </body>
 </html>
--- a/src/test/resources/testTemplateHeader.hbs
+++ b/src/test/resources/testTemplateHeader.hbs
@@ -0,0 +1,6 @@
 <html>
 <head>
  <title>Example HTTP exchanges for {{http.requestUri}}</title>
 </head>
 <body>

--- a/src/test/resources/testTemplateIndex.hbs
+++ b/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>
--- a/src/test/resources/testTemplateIndexMore.hbs
+++ b/src/test/resources/testTemplateIndexMore.hbs
@@ -0,0 +1,3 @@
 {{#each files}}
  <li><a href="{{fsPath}}">{{context}}</a></li>
 {{/each}}