Examples of org.json_voltpatches.JSONStringer

org.json_voltpatches.JSONStringer
JSONStringer provides a quick and convenient way of producing JSON text. The texts produced strictly conform to JSON syntax rules. No whitespace is added, so the results are ready for transmission or storage. Each instance of JSONStringer can produce one JSON text.
A JSONStringer instance provides a value method for appending values to the text, and a key method for adding keys before values in objects. There are array and endArray methods that make and bound array values, and object and endObject methods which make and bound object values. All of these methods return the JSONWriter instance, permitting cascade style. For example,
```
 myString = new JSONStringer() .object() .key("JSON") .value("Hello, World!") .endObject() .toString();
```
which produces the string
```
 {"JSON":"Hello, World!"}
```
The first method called must be array or object. There are no methods for adding commas or colons. JSONStringer adds them for you. Objects and arrays can be nested up to 20 levels deep.
This can sometimes be easier than using a JSONObject to build a string. @author JSON.org @version 2008-09-18


        indexMap.put(name, index);
    }


    private static String convertToJSONArray(List<AbstractExpression> exprs) throws JSONException {
        JSONStringer stringer = new JSONStringer();
        stringer.array();
        for (AbstractExpression abstractExpression : exprs) {
            stringer.object();
            abstractExpression.toJSONString(stringer);
            stringer.endObject();
        }
        stringer.endArray();
        return stringer.toString();
    }

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            VoltDB.crashGlobalVoltDB("Txnid must be greather than 0", true, null);
        }


        byte nodeBytes[] = null;
        try {
            JSONStringer stringer = new JSONStringer();
            stringer.object();
            stringer.key("txnId").value(txnId);
            stringer.key("isTruncation").value(isTruncation);
            stringer.key("didSucceed").value(false);
            stringer.key("hostCount").value(-1);
            stringer.key("path").value(path);
            stringer.key("nonce").value(nonce);
            stringer.key("truncReqId").value(truncReqId);
            stringer.key("exportSequenceNumbers").object().endObject();
            stringer.endObject();
            JSONObject jsonObj = new JSONObject(stringer.toString());
            nodeBytes = jsonObj.toString(4).getBytes(Charsets.UTF_8);
        } catch (Exception e) {
            VoltDB.crashLocalVoltDB("Error serializing snapshot completion node JSON", true, e);
        }

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        return (status == SUCCESS) || (status == OPERATIONAL_FAILURE);
    }


    @Override
    public String toJSONString() {
        JSONStringer js = new JSONStringer();
        try {
            js.object();


            js.key(JSON_STATUS_KEY);
            js.value(status);
            js.key(JSON_APPSTATUS_KEY);
            js.value(appStatus);
            js.key(JSON_STATUSSTRING_KEY);
            js.value(statusString);
            js.key(JSON_APPSTATUSSTRING_KEY);
            js.value(appStatusString);
            js.key(JSON_RESULTS_KEY);
            js.array();
            for (VoltTable o : results) {
                js.value(o);
            }
            js.endArray();


            js.endObject();
        }
        catch (JSONException e) {
            e.printStackTrace();
            throw new RuntimeException("Failed to serialized a parameter set to JSON.", e);
        }
        return js.toString();
    }

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     */
    public VoltTable[] run(SystemProcedureExecutionContext ctx) throws Exception
    {
        // Choose the lowest site ID on this host to actually flip the bit
        if (ctx.isLowestSiteId()) {
            JSONStringer js = new JSONStringer();
            js.object();
            js.key("role").value(ReplicationRole.NONE.ordinal());
            // Replication active state should the be same across the cluster
            js.key("active").value(VoltDB.instance().getReplicationActive());
            js.endObject();


            VoltDB.instance().getHostMessenger().getZK().setData(
                    VoltZK.replicationconfig,
                    js.toString().getBytes("UTF-8"),
                    -1);
            VoltDB.instance().setReplicationRole(ReplicationRole.NONE);
        }


        VoltTable t = new VoltTable(VoltSystemProcedure.STATUS_SCHEMA);

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            }
        }


        @Override
        public String toString() {
            JSONStringer js = new JSONStringer();
            try {
                js.object();
                js.key("coordinatorip").value(coordinatorIp.toString());
                js.key("zkinterface").value(zkInterface);
                js.key("internalinterface").value(internalInterface);
                js.key("internalport").value(internalPort);
                js.key("deadhosttimeout").value(deadHostTimeout);
                js.key("backwardstimeforgivenesswindow").value(backwardsTimeForgivenessWindow);
                js.key("networkThreads").value(networkThreads);
                js.endObject();


                return js.toString();
            }
            catch (Exception e) {
                throw new RuntimeException(e);
            }
        }

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        return ByteBuffer.wrap(digest).getInt();
    }


    public JSONObject serializeToJSONObject() throws JSONException
    {
        JSONStringer stringer = new JSONStringer();
        stringer.object();
        stringer.key("coord").value(m_coord);
        stringer.key("timestamp").value(m_timestamp);
        stringer.endObject();
        return new JSONObject(stringer.toString());
    }

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        }
    }


    void collectLocalNetworkMetadata() {
        boolean threw = false;
        JSONStringer stringer = new JSONStringer();
        try {
            stringer.object();
            stringer.key("interfaces").array();


            /*
             * If no interface was specified, do a ton of work
             * to identify all ipv4 or ipv6 interfaces and
             * marshal them into JSON. Always put the ipv4 address first
             * so that the export client will use it
             */


            if (m_config.m_externalInterface.equals("")) {
                LinkedList<NetworkInterface> interfaces = new LinkedList<NetworkInterface>();
                try {
                    Enumeration<NetworkInterface> intfEnum = NetworkInterface.getNetworkInterfaces();
                    while (intfEnum.hasMoreElements()) {
                        NetworkInterface intf = intfEnum.nextElement();
                        if (intf.isLoopback() || !intf.isUp()) {
                            continue;
                        }
                        interfaces.offer(intf);
                    }
                } catch (SocketException e) {
                    throw new RuntimeException(e);
                }


                if (interfaces.isEmpty()) {
                    stringer.value("localhost");
                } else {


                    boolean addedIp = false;
                    while (!interfaces.isEmpty()) {
                        NetworkInterface intf = interfaces.poll();
                        Enumeration<InetAddress> inetAddrs = intf.getInetAddresses();
                        Inet6Address inet6addr = null;
                        Inet4Address inet4addr = null;
                        while (inetAddrs.hasMoreElements()) {
                            InetAddress addr = inetAddrs.nextElement();
                            if (addr instanceof Inet6Address) {
                                inet6addr = (Inet6Address)addr;
                                if (inet6addr.isLinkLocalAddress()) {
                                    inet6addr = null;
                                }
                            } else if (addr instanceof Inet4Address) {
                                inet4addr = (Inet4Address)addr;
                            }
                        }
                        if (inet4addr != null) {
                            stringer.value(inet4addr.getHostAddress());
                            addedIp = true;
                        }
                        if (inet6addr != null) {
                            stringer.value(inet6addr.getHostAddress());
                            addedIp = true;
                        }
                    }
                    if (!addedIp) {
                        stringer.value("localhost");
                    }
                }
            } else {
                stringer.value(m_config.m_externalInterface);
            }
        } catch (Exception e) {
            threw = true;
            hostLog.warn("Error while collecting data about local network interfaces", e);
        }
        try {
            if (threw) {
                stringer = new JSONStringer();
                stringer.object();
                stringer.key("interfaces").array();
                stringer.value("localhost");
                stringer.endArray();
            } else {
                stringer.endArray();
            }
            stringer.key("clientPort").value(m_config.m_port);
            stringer.key("clientInterface").value(m_config.m_clientInterface);
            stringer.key("adminPort").value(m_config.m_adminPort);
            stringer.key("adminInterface").value(m_config.m_adminInterface);
            stringer.key("httpPort").value(m_config.m_httpPort);
            stringer.key("httpInterface").value(m_config.m_httpPortInterface);
            stringer.key("drPort").value(m_config.m_drAgentPortStart);
            stringer.key("drInterface").value(m_config.m_drInterface);
            stringer.endObject();
            JSONObject obj = new JSONObject(stringer.toString());
            // possibly atomic swap from null to realz
            m_localMetadata = obj.toString(4);
            hostLog.debug("System Metadata is: " + m_localMetadata);
        } catch (Exception e) {
            hostLog.warn("Failed to collect data about lcoal network interfaces", e);

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    {
        if (m_replicationActive != active) {
            m_replicationActive = active;


            try {
                JSONStringer js = new JSONStringer();
                js.object();
                // Replication role should the be same across the cluster
                js.key("role").value(getReplicationRole().ordinal());
                js.key("active").value(m_replicationActive);
                js.endObject();


                getHostMessenger().getZK().setData(VoltZK.replicationconfig,
                                                   js.toString().getBytes("UTF-8"),
                                                   -1);
            } catch (Exception e) {
                e.printStackTrace();
                hostLog.error("Failed to write replication active state to ZK: " +
                              e.getMessage());

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            String pathToConfigInfo = pathToConfigInfoDir + File.separator + "config.json";
            File configInfo = new File(pathToConfigInfo);


            byte jsonBytes[] = null;
            try {
                JSONStringer stringer = new JSONStringer();
                stringer.object();


                stringer.key("workingDir").value(System.getProperty("user.dir"));
                stringer.key("pid").value(CLibrary.getpid());


                stringer.key("log4jDst").array();
                Enumeration<?> appenders = Logger.getRootLogger().getAllAppenders();
                while (appenders.hasMoreElements()) {
                    Appender appender = (Appender) appenders.nextElement();
                    if (appender instanceof FileAppender){
                        stringer.object();
                        stringer.key("path").value(new File(((FileAppender) appender).getFile()).getCanonicalPath());
                        if (appender instanceof DailyRollingFileAppender) {
                            stringer.key("format").value(((DailyRollingFileAppender)appender).getDatePattern());
                        }
                        stringer.endObject();
                    }
                }


                Enumeration<?> loggers = Logger.getRootLogger().getLoggerRepository().getCurrentLoggers();
                while (loggers.hasMoreElements()) {
                    Logger logger = (Logger) loggers.nextElement();
                    appenders = logger.getAllAppenders();
                    while (appenders.hasMoreElements()) {
                        Appender appender = (Appender) appenders.nextElement();
                        if (appender instanceof FileAppender){
                            stringer.object();
                            stringer.key("path").value(new File(((FileAppender) appender).getFile()).getCanonicalPath());
                            if (appender instanceof DailyRollingFileAppender) {
                                stringer.key("format").value(((DailyRollingFileAppender)appender).getDatePattern());
                            }
                            stringer.endObject();
                        }
                    }
                }
                stringer.endArray();


                stringer.endObject();
                JSONObject jsObj = new JSONObject(stringer.toString());
                jsonBytes = jsObj.toString(4).getBytes(Charsets.UTF_8);
            } catch (JSONException e) {
                Throwables.propagate(e);
            } catch (IOException e) {
                e.printStackTrace();

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    }


    public static String makeSnapshotRequest(SnapshotRequestConfig config)
    {
        try {
            JSONStringer jsStringer = new JSONStringer();
            jsStringer.object();
            config.toJSONString(jsStringer);
            jsStringer.endObject();
            return jsStringer.toString();
        } catch (Exception e) {
            VoltDB.crashLocalVoltDB("Failed to serialize to JSON", true, e);
        }
        // unreachable;
        return null;

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Related Classes of org.json_voltpatches.JSONStringer

org.voltcore.messaging.HostMessenger$Config

org.voltcore.utils.InstanceId

org.voltdb.ClientResponseImpl

org.voltdb.compiler.ClusterConfig

org.voltdb.compiler.DDLCompiler

org.voltdb.DefaultSnapshotDataTarget

org.voltdb.ExecutionSite

org.voltdb.export.ExportDataSource

org.voltdb.expressions.AbstractExpression

org.voltdb.expressions.TupleValueExpression

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