Examples of hudson.util.TextFile

hudson.util.TextFile
Represents a text file. Provides convenience methods for reading and writing to it. @author Kohsuke Kawaguchi

    @Override
    public void onLoad(ItemGroup<? extends Item> parent, String name)
            throws IOException {
        super.onLoad(parent, name);


        TextFile f = getNextBuildNumberFile();
        if (f.exists()) {
            // starting 1.28, we store nextBuildNumber in a separate file.
            // but old Hudson didn't do it, so if the file doesn't exist,
            // assume that nextBuildNumber was read from config.xml
            try {
                synchronized (this) {
                    this.nextBuildNumber = Integer.parseInt(f.readTrim());
                }
            } catch (NumberFormatException e) {
                // try to infer the value of the next build number from the existing build records. See JENKINS-11563
                File[] folders = this.getBuildDir().listFiles(new FileFilter() {
                    public boolean accept(File file) {

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        }
        super.performDelete();
    }


    /*package*/ TextFile getNextBuildNumberFile() {
        return new TextFile(new File(this.getRootDir(), "nextBuildNumber"));
    }

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            try {
                start.await();


                for (int i = 0; i < 100; i++) {
                    int buildNumber = -1, savedBuildNumber = -1;
                    TextFile f;


                    synchronized (p) {
                        if (assign) {
                            buildNumber = p.assignBuildNumber();
                            f = p.getNextBuildNumberFile();
                            if (f == null) {
                                this.message = "Could not get build number file";
                                this.passed = false;
                                return;
                            }
                            savedBuildNumber = Integer.parseInt(f.readTrim());
                            if (buildNumber != (savedBuildNumber-1)) {
                                this.message = "Build numbers don't match (" + buildNumber + ", " + (savedBuildNumber-1) + ")";
                                this.passed = false;
                                return;
                            }
                        } else {
                            buildNumber = p.getNextBuildNumber() + 100;
                            p.updateNextBuildNumber(buildNumber);
                            f = p.getNextBuildNumberFile();
                            if (f == null) {
                                this.message = "Could not get build number file";
                                this.passed = false;
                                return;
                            }
                            savedBuildNumber = Integer.parseInt(f.readTrim());
                            if (buildNumber != savedBuildNumber) {
                                this.message = "Build numbers don't match (" + buildNumber + ", " + savedBuildNumber + ")";
                                this.passed = false;
                                return;
                            }

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                }
                throw e;
            }


            // get or create the secret
            TextFile secretFile = new TextFile(new File(getRootDir(),"secret.key"));
            if(secretFile.exists()) {
                secretKey = secretFile.readTrim();
            } else {
                SecureRandom sr = new SecureRandom();
                byte[] random = new byte[32];
                sr.nextBytes(random);
                secretKey = Util.toHexString(random);
                secretFile.write(secretKey);
            }


            try {
                proxy = ProxyConfiguration.load();
            } catch (IOException e) {

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     * Loads the update center data, if any and if modified since last read.
     *
     * @return  null if no data is available.
     */
    public Data getData() {
        TextFile df = getDataFile();
        if (df.exists() && dataLastReadFromFile != df.file.lastModified()) {
            JSONObject o = getJSONObject();
            if (o!=null) {
                data = new Data(o);
                dataLastReadFromFile = df.file.lastModified();
            } else {

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    /**
     * Gets the raw update center JSON data.
     */
    public JSONObject getJSONObject() {
        TextFile df = getDataFile();
        if(df.exists()) {
            try {
                return JSONObject.fromObject(df.read());
            } catch (JSONException e) {
                LOGGER.log(Level.SEVERE,"Failed to parse "+df,e);
                df.delete(); // if we keep this file, it will cause repeated failures
                return null;
            } catch (IOException e) {
                LOGGER.log(Level.SEVERE,"Failed to parse "+df,e);
                df.delete(); // if we keep this file, it will cause repeated failures
                return null;
            }
        } else {
            return null;
        }

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    /**
     * This is where we store the update center data.
     */
    private TextFile getDataFile() {
        return new TextFile(new File(Jenkins.getInstance().getRootDir(),
                                     "updates/" + getId()+".json"));
    }

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        /**
         * This is where the retrieved file will be stored.
         */
        public TextFile getDataFile() {
            return new TextFile(new File(Jenkins.getInstance().getRootDir(),"updates/"+id));
        }

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        /**
         * Loads the current file into JSON and returns it, or null
         * if no data exists.
         */
        public JSONObject getData() throws IOException {
            TextFile df = getDataFile();
            if(df.exists())
                try {
                    return JSONObject.fromObject(df.read());
                } catch (JSONException e) {
                    df.delete(); // if we keep this file, it will cause repeated failures
                    throw new IOException2("Failed to parse "+df+" into JSON",e);
                }
            return null;
        }

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        /**
         * This is where the browser sends us the data. 
         */
        public void doPostBack(StaplerRequest req, StaplerResponse rsp) throws IOException {
            long dataTimestamp = System.currentTimeMillis();
            TextFile df = getDataFile();
            df.write(IOUtils.toString(req.getInputStream(),"UTF-8"));
            df.file.setLastModified(dataTimestamp);
            due = dataTimestamp+getInterval();
            LOGGER.info("Obtained the updated data file for "+id);
            rsp.setContentType("text/plain");  // So browser won't try to parse response
        }

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