From 2b5c60f130bf5d6e0ad4521d327b81947cd2eab7 Mon Sep 17 00:00:00 2001
From: ulrich
Date: Mon, 05 Apr 2021 13:42:39 +0000
Subject: [PATCH] Alle Faelle (Liste, Neu, Lesen, Aendern, Loeschen) fuer Ablageort fertig
---
src/de/uhilger/mediaz/api/StorageHandler.java | 64 +++++++++++++++++++++++--------
src/de/uhilger/mediaz/store/FileStorage.java | 41 +++++++++++++++-----
src/de/uhilger/mediaz/store/Storage.java | 2 +
3 files changed, 80 insertions(+), 27 deletions(-)
diff --git a/src/de/uhilger/mediaz/api/StorageHandler.java b/src/de/uhilger/mediaz/api/StorageHandler.java
index 22d9de0..024900b 100644
--- a/src/de/uhilger/mediaz/api/StorageHandler.java
+++ b/src/de/uhilger/mediaz/api/StorageHandler.java
@@ -22,6 +22,7 @@
import com.sun.net.httpserver.HttpHandler;
import de.uhilger.mediaz.App;
import de.uhilger.mediaz.Server;
+import static de.uhilger.mediaz.Server.RB_SLASH;
import de.uhilger.mediaz.store.FileStorage;
import de.uhilger.mediaz.entity.Entity;
import java.io.BufferedReader;
@@ -30,6 +31,7 @@
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
+import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
@@ -45,13 +47,18 @@
/*
-
- HTTP GET: lies einen Ablageort und schreibe JSON
- HTTP PUT: schreibe einen neuen Ablageort auf die Platte
- HTTP POST: schreibe Aenderungen auf die Platte
- HTTP DELETE: loesche den Ablageort
+ Das REST-Muster sieht je Entitaet fuenf Faelle vor (Beispiel Ablageort):
+
+ 1. HTTP GET Ablageort/[Name]: Liefere den Ablageort als JSON
+ 2. HTTP GET Ablageort/: Liefere einer Liste von Ablageorten als JSON
+ 3. HTTP PUT: schreibe einen neuen Ablageort auf die Platte
+ 4. HTTP POST: schreibe Aenderungen auf die Platte
+ 5. HTTP DELETE: loesche den Ablageort
Beispiele:
+
+ HTTP GET an /mz/api/store/Ablageort/
+ liefert eine Liste der Namen vorhandener Ablageorte
HTTP GET an /mz/api/store/Ablageort/Katalog
liest den Ablageort namens "Katalog"
@@ -68,9 +75,16 @@
*/
+ /** Name der HTTP Methode GET */
public static final String HTTP_GET = "GET";
+
+ /** Name der HTTP Methode PUT */
public static final String HTTP_PUT = "PUT";
+
+ /** Name der HTTP Methode POST */
public static final String HTTP_POST = "POST";
+
+ /** Name der HTTP Methode DELETE */
public static final String HTTP_DELETE = "DELETE";
@Override
@@ -90,7 +104,7 @@
break;
case HTTP_PUT:
- response = "PUT noch bauen.";
+ response = aendern(e);
break;
case HTTP_POST:
@@ -98,7 +112,12 @@
break;
case HTTP_DELETE:
- response = "DELETE noch bauen.";
+ boolean geloescht = loeschen(e);
+ if(geloescht) {
+ response = "geloescht";
+ } else {
+ response = "nicht geloescht";
+ }
break;
}
logger.info(response);
@@ -129,23 +148,34 @@
return type + FileHandler.STR_BLANK + filename;
}
- private void aendern() {
-
+ private String aendern(HttpExchange e) throws IOException {
+ return neu(e); // einstweilen wird einfach ueberschrieben
}
- private void loeschen() {
-
- }
-
- private String lesen(HttpExchange e) {
+ private boolean loeschen(HttpExchange e) {
String path = e.getRequestURI().toString();
String[] elems = path.split(App.getRs(Server.RB_SLASH));
String type = elems[elems.length - 2];
String elemName = elems[elems.length - 1];
FileStorage fs = new FileStorage(App.getInitParameter(App.getRs(App.RB_AP_CONF)));
- //Entity entity = fs.read(type, elemName);
- //return entity;
- return fs.readJson(type, elemName);
+ return fs.delete(type, elemName);
+ }
+
+ private String lesen(HttpExchange e) {
+ String path = e.getRequestURI().toString();
+ String[] elems = path.split(App.getRs(Server.RB_SLASH));
+ FileStorage fs = new FileStorage(App.getInitParameter(App.getRs(App.RB_AP_CONF)));
+ if(path.endsWith(App.getRs(RB_SLASH))) {
+ String type = elems[elems.length - 1];
+ logger.info(type);
+ List list = fs.list(type);
+ Gson gson = new Gson();
+ return gson.toJson(list);
+ } else {
+ String type = elems[elems.length - 2];
+ String elemName = elems[elems.length - 1];
+ return fs.readJson(type, elemName);
+ }
}
diff --git a/src/de/uhilger/mediaz/store/FileStorage.java b/src/de/uhilger/mediaz/store/FileStorage.java
index 3819699..90a99a1 100644
--- a/src/de/uhilger/mediaz/store/FileStorage.java
+++ b/src/de/uhilger/mediaz/store/FileStorage.java
@@ -1,7 +1,19 @@
/*
- * To change this license header, choose License Headers in Project Properties.
- * To change this template file, choose Tools | Templates
- * and open the template in the editor.
+ Mediazentrale - Personal Media Center
+ Copyright (C) 2021 Ulrich Hilger
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Affero General Public License as
+ published by the Free Software Foundation, either version 3 of the
+ License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package de.uhilger.mediaz.store;
@@ -25,7 +37,7 @@
import java.util.logging.Level;
/**
- * Ablage fuer Dateien
+ * Ablage fuer Dateien der Mediazentrale
*
* [Basispfad]/[Typ]/[Name]
*
@@ -66,20 +78,20 @@
* Der Name der Ablage muss eindeutig sein
*
*
- * @param o
+ * @param entity
*/
- public File writeToFile(Entity o) throws IOException {
- String className = o.getClass().getSimpleName();
+ public File writeToFile(Entity entity) throws IOException {
+ String className = entity.getClass().getSimpleName();
logger.finer(className);
File dir = new File(fileBase, className);
dir.mkdirs();
- File file = new File(dir, o.getName());
+ File file = new File(dir, entity.getName());
if(file.exists()) {
file.delete();
}
FileWriter fw = new FileWriter(file);
Gson gson = new Gson();
- fw.write(gson.toJson(o));
+ fw.write(gson.toJson(entity));
fw.flush();
fw.close();
return file;
@@ -105,7 +117,6 @@
private String typeNameFromPath(File file) {
String[] parts = file.getPath().split(App.getRs(Server.RB_SLASH));
- logger.info(parts[parts.length-2]);
return parts[parts.length-2];
}
@@ -162,6 +173,16 @@
return new File(dir, name);
}
+ @Override
+ public boolean delete(String typ, String name) {
+ File file = getFile(typ, name);
+ if(file.exists()) {
+ return file.delete();
+ } else {
+ return false;
+ }
+ }
+
}
diff --git a/src/de/uhilger/mediaz/store/Storage.java b/src/de/uhilger/mediaz/store/Storage.java
index d892954..1f8d95c 100644
--- a/src/de/uhilger/mediaz/store/Storage.java
+++ b/src/de/uhilger/mediaz/store/Storage.java
@@ -76,4 +76,6 @@
public List<String> list(String typ);
public TypeToken typeFromName(String name);
+
+ public boolean delete(String typ, String name);
}
--
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