Initial groundwork for WDIWTLT servlet.

rest-server/build.gradle

@@ -0,0 +1,24 @@
+apply plugin: 'groovy'
+apply plugin: 'war'
+apply plugin: "jetty"
+
+dependencies {
+    compile localGroovy()
+    compile 'ch.qos.logback:logback-classic:1.1.3'
+    compile 'ch.qos.logback:logback-core:1.1.3'
+    compile 'org.slf4j:slf4j-api:1.7.14'
+    compile 'com.impossibl.pgjdbc-ng:pgjdbc-ng:0.3'
+    compile 'com.lambdaworks:scrypt:1.4.0'
+    compile 'com.zaxxer:HikariCP-java6:2.3.2'
+    compile 'javax:javaee-api:7.0'
+    compile 'javax.ws.rs:javax.ws.rs-api:2.0.1'
+    compile project(":wdiwtlt-core")
+
+    runtime 'com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:2.3.2'
+    runtime 'org.glassfish.jersey.containers:jersey-container-servlet:2.16'
+    runtime 'org.glassfish.jersey.media:jersey-media-json-jackson:2.16'
+
+    providedCompile 'javax.servlet:javax.servlet-api:3.1.0'
+
+    testCompile 'junit:junit:4.12'
+    testRuntime 'com.h2database:h2:1.4.186' }

rest-server/src/main/groovy/com/jdbernard/wdiwtlt/rest/AllowCors.java

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+package com.jdbernard.nlsongs.rest;
+
+import javax.ws.rs.NameBinding;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+@NameBinding
+@Target({ ElementType.TYPE, ElementType.METHOD })
+@Retention(value = RetentionPolicy.RUNTIME)
+public @interface AllowCors {}

rest-server/src/main/groovy/com/jdbernard/wdiwtlt/rest/CorsResponseFilter.java

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+package com.jdbernard.nlsongs.rest;
+
+import javax.annotation.Priority;
+import javax.ws.rs.Priorities;
+import javax.ws.rs.core.MultivaluedMap;
+import javax.ws.rs.container.ContainerRequestContext;
+import javax.ws.rs.container.ContainerResponseContext;
+import javax.ws.rs.container.ContainerResponseFilter;
+import javax.ws.rs.ext.Provider;
+
+@Provider @AllowCors @Priority(Priorities.HEADER_DECORATOR)
+public class CorsResponseFilter implements ContainerResponseFilter {
+
+    @Override
+    public void filter(ContainerRequestContext reqCtx,
+                       ContainerResponseContext respCtx) {
+
+        MultivaluedMap<String, Object> headers = respCtx.getHeaders();
+
+        headers.add("Access-Control-Allow-Origin",
+            reqCtx.getHeaderString("Origin"));
+
+        headers.add("Access-Control-Allow-Methods",
+            "GET, POST, PUT, DELETE, OPTIONS");
+
+        headers.add("Access-Control-Allow-Headers",
+            reqCtx.getHeaderString("Access-Control-Request-Headers"));
+
+    }
+}

rest-server/src/main/groovy/com/jdbernard/wdiwtlt/rest/PingResource.java

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+package com.jdbernard.nlsongs.rest;
+
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.Produces;
+
+@Path("v1/ping") @AllowCors
+public class PingResource {
+
+    @GET
+    @Produces("text/plain")
+    public String ping() { return "pong"; } }

rest-server/src/main/groovy/com/jdbernard/wdiwtlt/servlet/WdiwtltContext.groovy

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+package com.jdbernard.nlsongs.servlet
+
+import com.jdbernard.wdiwtlt.db.DbApi
+
+public class WdiwtltContext {
+
+    public static DbApi dbapi
+}

rest-server/src/main/groovy/com/jdbernard/wdiwtlt/servlet/WdiwtltContextListener.groovy

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+package com.jdbernard.nlsongs.servlet
+
+import javax.servlet.ServletContext
+import javax.servlet.ServletContextEvent
+import javax.servlet.ServletContextListener
+
+import com.jdbernard.wdiwtlt.db.DbApi
+
+import com.zaxxer.hikari.HikariConfig
+import com.zaxxer.hikari.HikariDataSource
+
+public final class WdiwtltContextListener implements ServletContextListener {
+
+    public void contextInitialized(ServletContextEvent event) {
+        def context = event.servletContext
+
+        // Load the context configuration.
+        Properties props = new Properties()
+        WdiwtltContextListener.getResourceAsStream(
+            context.getInitParameter('context.config.file')).withStream { is ->
+                props.load(is) }
+
+        // Create the pooled data source
+        HikariConfig hcfg = new HikariConfig(
+            context.getInitParameter('datasource.config.file'))
+
+        HikariDataSource hds = new HikariDataSource(hcfg)
+
+        // Create the NLSonsDB instance.
+        DbApi dbapi = new DbApi(hds)
+
+        context.setAttribute('dbapi', dbapi)
+        WdiwtltContext.dbapi = dbapi }
+
+    public void contextDestroyed(ServletContextEvent event) {
+        def context = event.servletContext
+
+        // Shutdown the DB API instance (it will shut down the data source).
+        DbApi dbapi = context.getAttribute('dbapi')
+        if (dbapi) dbapi.shutdown()
+
+        context.removeAttribute('dbapi') }
+}

settings.gradle

@@ -1,4 +1,4 @@
-include 'core', 'cli'
+include 'core', 'cli', 'rest-server'
 
 project(":core").name ="wdiwtlt-core"
 project(":cli").name = "wdiwtlt-cli"