Examples of hudson.util.AtomicFileWriter

hudson.util.AtomicFileWriter
Buffered {@link FileWriter} that uses UTF-8.
The write operation is atomic when used for overwriting; it either leaves the original file intact, or it completely rewrites it with new contents. @author Kohsuke Kawaguchi

     * Updates Job by its XML definition.
     */
    public void updateByXml(StreamSource source) throws IOException {
        checkPermission(CONFIGURE);
        XmlFile configXmlFile = getConfigFile();
        AtomicFileWriter out = new AtomicFileWriter(configXmlFile.getFile());
        try {
            try {
                // this allows us to use UTF-8 for storing data,
                // plus it checks any well-formedness issue in the submitted
                // data
                Transformer t = TransformerFactory.newInstance()
                        .newTransformer();
                t.transform(source,
                        new StreamResult(out));
                out.close();
            } catch (TransformerException e) {
                throw new IOException2("Failed to persist configuration.xml", e);
            }


            // try to reflect the changes by reloading
            new XmlFile(Items.XSTREAM, out.getTemporaryFile()).unmarshal(this);
            onLoad(getParent(), getRootDir().getName());
            Jenkins.getInstance().rebuildDependencyGraph();


            // if everything went well, commit this new version
            out.commit();
            SaveableListener.fireOnChange(this, getConfigFile());
        } finally {
            out.abort(); // don't leave anything behind
        }
    }

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        }
    }


    public void write( Object o ) throws IOException {
        mkdirs();
        AtomicFileWriter w = new AtomicFileWriter(file);
        try {
            w.write("<?xml version='1.0' encoding='UTF-8'?>\n");
            xs.toXML(o,w);
            w.commit();
        } catch(StreamException e) {
            throw new IOException2(e);
        } finally {
            w.abort();
        }
    }

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        }
        if (req.getMethod().equals("POST")) {
            // submission
            checkPermission(CONFIGURE);
            XmlFile configXmlFile = getConfigFile();
            AtomicFileWriter out = new AtomicFileWriter(configXmlFile.getFile());
            try {
                try {
                    // this allows us to use UTF-8 for storing data,
                    // plus it checks any well-formedness issue in the submitted
                    // data
                    Transformer t = TransformerFactory.newInstance()
                            .newTransformer();
                    t.transform(new StreamSource(req.getReader()),
                            new StreamResult(out));
                    out.close();
                } catch (TransformerException e) {
                    throw new IOException2("Failed to persist configuration.xml", e);
                }


                // try to reflect the changes by reloading
                new XmlFile(Items.XSTREAM, out.getTemporaryFile()).unmarshal(this);
                onLoad(getParent(), getRootDir().getName());


                // if everything went well, commit this new version
                out.commit();
            } finally {
                out.abort(); // don't leave anything behind
            }
            return;
        }


        // huh?

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        }
    }


    public void write( Object o ) throws IOException {
        mkdirs();
        AtomicFileWriter w = new AtomicFileWriter(file);
        try {
            w.write("<?xml version='1.0' encoding='UTF-8'?>\n");
            xs.toXML(o,w);
            w.commit();
        } catch(StreamException e) {
            throw new IOException2(e);
        } finally {
            w.abort();
        }
    }

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Related Classes of hudson.util.AtomicFileWriter

hudson.model.AbstractItem

hudson.XmlFile

java.io.File

java.io.IOException

java.io.OutputStreamWriter

java.io.FileOutputStream

java.io.BufferedWriter

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