From 81105d8785341817023d3ee2d19f6f814748ae77 Mon Sep 17 00:00:00 2001
From: "David A. Madore" <david+git@madore.org>
Date: Sun, 5 Oct 2014 00:01:10 +0200
Subject: First servlet version that is actually capable of (sometimes)
producing some output.
Concurrency is completely broken, however.
---
.../damlengine/WeblogDatabaseConnection.java | 79 +++++++++++++---------
org/madore/damlengine/WeblogServlet.java | 42 ++++++++++--
2 files changed, 83 insertions(+), 38 deletions(-)
diff --git a/org/madore/damlengine/WeblogDatabaseConnection.java b/org/madore/damlengine/WeblogDatabaseConnection.java
index 900f3a0..fc485a6 100644
--- a/org/madore/damlengine/WeblogDatabaseConnection.java
+++ b/org/madore/damlengine/WeblogDatabaseConnection.java
@@ -20,68 +20,81 @@ public final class WeblogDatabaseConnection {
public static Connection getConnection()
throws SQLException {
if ( conn == null ) {
- String dbHost = System.getenv("DAMLENGINE_PGHOST");
+ String dbHost = null;
+ if ( ! DamlEngine.runAsServlet )
+ dbHost = System.getenv("DAMLENGINE_PGHOST");
if ( dbHost == null )
dbHost = DamlEngine.appProps.getProperty("pghost");
- if ( dbHost == null )
+ if ( dbHost == null && ! DamlEngine.runAsServlet )
dbHost = System.getenv("PGHOST");
if ( dbHost == null )
dbHost = "localhost";
- String dbPort = System.getenv("DAMLENGINE_PGPORT");
+ String dbPort = null;
+ if ( ! DamlEngine.runAsServlet )
+ dbPort = System.getenv("DAMLENGINE_PGPORT");
if ( dbPort == null )
dbPort = DamlEngine.appProps.getProperty("pgport");
- if ( dbPort == null )
+ if ( dbPort == null && ! DamlEngine.runAsServlet )
dbPort = System.getenv("PGPORT");
if ( dbPort == null )
dbPort = "5432";
- String dbName = System.getenv("DAMLENGINE_DBNAME");
+ String dbName = null;
+ if ( ! DamlEngine.runAsServlet )
+ dbName = System.getenv("DAMLENGINE_DBNAME");
if ( dbName == null )
dbName = DamlEngine.appProps.getProperty("dbname");
if ( dbName == null )
dbName = "weblog";
- String dbUser = System.getenv("DAMLENGINE_PGUSER");
+ String dbUser = null;
+ if ( ! DamlEngine.runAsServlet )
+ dbUser = System.getenv("DAMLENGINE_PGUSER");
if ( dbUser == null )
dbUser = DamlEngine.appProps.getProperty("pguser");
- if ( dbUser == null )
+ if ( dbUser == null && ! DamlEngine.runAsServlet )
dbUser = System.getenv("PGUSER");
- if ( dbUser == null )
+ if ( dbUser == null && ! DamlEngine.runAsServlet )
dbUser = System.getenv("USER");
if ( dbUser == null )
dbUser = System.getProperty("user.name");
if ( dbUser == null )
dbUser = dbName;
- String dbPass = System.getenv("DAMLENGINE_PGPASSWORD");
+ String dbPass = null;
+ if ( ! DamlEngine.runAsServlet )
+ dbPass = System.getenv("DAMLENGINE_PGPASSWORD");
if ( dbPass == null )
dbPass = DamlEngine.appProps.getProperty("pgpassword");
- if ( dbPass == null )
+ if ( dbPass == null && ! DamlEngine.runAsServlet )
dbPass = System.getenv("PGPASSWORD");
- if ( dbPass == null )
- try {
- String dbPassFile = System.getenv("DAMLENGINE_PGPASSFILE");
- if ( dbPassFile == null )
- dbPassFile = DamlEngine.appProps.getProperty("pgpassfile");
- if ( dbPassFile == null )
- dbPassFile = System.getenv("PGPASSFILE");
- if ( dbPassFile == null )
- dbPassFile = System.getProperty("user.home")
- + "/.pgpass";
+ if ( dbPass == null ) {
+ String dbPassFile = null;
+ if ( ! DamlEngine.runAsServlet )
+ dbPassFile = System.getenv("DAMLENGINE_PGPASSFILE");
+ if ( dbPassFile == null )
+ dbPassFile = DamlEngine.appProps.getProperty("pgpassfile");
+ if ( dbPassFile == null && ! DamlEngine.runAsServlet )
+ dbPassFile = System.getenv("PGPASSFILE");
+ if ( dbPassFile == null && ! DamlEngine.runAsServlet )
+ dbPassFile = System.getProperty("user.home")
+ + "/.pgpass";
+ if ( dbPassFile != null ) try {
BufferedReader buf
= new BufferedReader(new InputStreamReader(new FileInputStream(dbPassFile)));
- String line;
- while ( ( line = buf.readLine() ) != null ) {
- String[] elts = line.split(":");
- if ( elts.length == 5
- && ( elts[0].equals("*") || elts[0].equals(dbHost) )
- && ( elts[1].equals("*") || elts[1].equals(dbPort) )
- && ( elts[2].equals("*") || elts[2].equals(dbName) )
- && ( elts[3].equals("*") || elts[3].equals(dbUser) ) ) {
- dbPass = elts[4];
- break;
+ String line;
+ while ( ( line = buf.readLine() ) != null ) {
+ String[] elts = line.split(":");
+ if ( elts.length == 5
+ && ( elts[0].equals("*") || elts[0].equals(dbHost) )
+ && ( elts[1].equals("*") || elts[1].equals(dbPort) )
+ && ( elts[2].equals("*") || elts[2].equals(dbName) )
+ && ( elts[3].equals("*") || elts[3].equals(dbUser) ) ) {
+ dbPass = elts[4];
+ break;
+ }
}
+ } catch (IOException e) {
+ // Ignore
}
- } catch (IOException e) {
- // Ignore
- }
+ }
if ( dbPass == null )
dbPass = "";
final String dbUrl
diff --git a/org/madore/damlengine/WeblogServlet.java b/org/madore/damlengine/WeblogServlet.java
index 181c782..6b9b738 100644
--- a/org/madore/damlengine/WeblogServlet.java
+++ b/org/madore/damlengine/WeblogServlet.java
@@ -1,27 +1,58 @@
package org.madore.damlengine;
+import java.util.Properties;
+import java.util.Enumeration;
import java.io.IOException;
import java.io.OutputStream;
-import java.util.ResourceBundle;
-import java.util.Date;
-import java.text.DateFormat;
-import java.text.SimpleDateFormat;
+import java.nio.file.Paths;
+import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
+/* Thinkos about the mess that is tomcat:
+
+ * - Make sure that /usr/share/java/postgresql-jdbc3.jar (or whatever
+ * contains the class org.postgresql.Driver) is symlinked from
+ * /var/lib/tomcat7/common (or some path listed in the common.loader
+ * property of the catalina.properties file). Similarly,
+ * xercesImpl.jar and probably xml-resolver.jar need to be linked.
+
+ * - The following parameters need to be defined in <init-param> tags
+ * inside the <servlet> block: base_path, template_path, pghost,
+ * pgport, dbname, pguser and pgpass or pgpassfile.
+
+ */
+
public class WeblogServlet extends HttpServlet {
- private static final long serialVersionUID = 2014100301L;
+ private static final long serialVersionUID = 2014100406L;
@Override
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException
{
+
DamlEngine.runAsServlet = true;
+ DamlEngine.appProps = new Properties();
+ ServletConfig cfg = getServletConfig();
+ for (Enumeration<String> e = cfg.getInitParameterNames() ; e.hasMoreElements() ; ) {
+ String k = e.nextElement();
+ DamlEngine.appProps.setProperty(k, cfg.getInitParameter(k));
+ }
+
+ if ( DamlEngine.appProps.getProperty("base_path") != null )
+ DamlEngine.basePath = Paths.get(DamlEngine.appProps.getProperty("base_path"));
+ if ( DamlEngine.basePath == null )
+ DamlEngine.basePath = Paths.get(getServletContext().getRealPath("/"));
+ if ( DamlEngine.appProps.getProperty("template_path") != null )
+ DamlEngine.templatePath = Paths.get(DamlEngine.appProps.getProperty("template_path"));
+ if ( DamlEngine.templatePath == null )
+ DamlEngine.templatePath = DamlEngine.basePath.resolve("templates");
+
response.setContentType("text/html; charset=utf-8");
response.setCharacterEncoding("UTF-8");
OutputStream out = response.getOutputStream();
@@ -32,5 +63,6 @@ public class WeblogServlet extends HttpServlet {
} catch (Exception e) {
throw new ServletException("exception during WeblogSelect.fullProcess()", e);
}
+
}
}
--
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