Example usage for com.google.common.io CharStreams asWriter

Introduction

In this page you can find the example usage for com.google.common.io CharStreams asWriter.

Prototype

public static Writer asWriter(Appendable target) 

Source Link

Document

Returns a Writer that sends all output to the given Appendable target.

Usage

From source file:org.glowroot.local.ui.TransactionJsonService.java

@GET("/backend/transaction/flame-graph")
String getFlameGraph(String queryString) throws Exception {
    FlameGraphRequest request = QueryStrings.decode(queryString, FlameGraphRequest.class);
    ProfileNode profile = transactionCommonService.getProfile(request.transactionType(),
            request.transactionName(), request.from(), request.to(), request.truncateLeafPercentage());
    ProfileNode interestingNode = profile;
    while (interestingNode.getChildNodes().size() == 1) {
        interestingNode = interestingNode.getChildNodes().get(0);
    }/*ww w  . j a  va2s  . com*/
    if (interestingNode.getChildNodes().isEmpty()) {
        // only a single branch through entire tree
        interestingNode = profile;
    }
    StringBuilder sb = new StringBuilder();
    JsonGenerator jg = mapper.getFactory().createGenerator(CharStreams.asWriter(sb));
    jg.writeStartObject();
    jg.writeObjectFieldStart("");
    jg.writeNumberField("svUnique", 0);
    jg.writeNumberField("svTotal", interestingNode.getSampleCount());
    jg.writeObjectFieldStart("svChildren");
    writeFlameGraphNode(interestingNode, jg);
    jg.writeEndObject();
    jg.writeEndObject();
    jg.close();
    return sb.toString();
}

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From source file:org.glowroot.ui.JvmJsonService.java

@GET(path = "/backend/jvm/jstack", permission = "agent:jvm:threadDump")
String getJstack(@BindAgentId String agentId) throws Exception {
    checkNotNull(liveJvmService);/*from  ww w.j  a  v  a 2 s .  co  m*/
    String jstack;
    try {
        jstack = liveJvmService.getJstack(agentId);
    } catch (AgentNotConnectedException e) {
        logger.debug(e.getMessage(), e);
        return "{\"agentNotConnected\":true}";
    } catch (UnavailableDueToRunningInJreException e) {
        logger.debug(e.getMessage(), e);
        return "{\"unavailableDueToRunningInJre\":true}";
    } catch (UnavailableDueToRunningInJ9JvmException e) {
        logger.debug(e.getMessage(), e);
        return "{\"unavailableDueToRunningInJ9Jvm\":true}";
    } catch (AgentUnsupportedOperationException e) {
        // this operation introduced in 0.9.2
        logger.debug(e.getMessage(), e);
        return getAgentUnsupportedOperationResponse(agentId);
    }
    StringBuilder sb = new StringBuilder();
    JsonGenerator jg = mapper.getFactory().createGenerator(CharStreams.asWriter(sb));
    try {
        jg.writeStartObject();
        jg.writeStringField("jstack", jstack);
        jg.writeEndObject();
    } finally {
        jg.close();
    }
    return sb.toString();
}

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From source file:org.glowroot.ui.ReportJsonService.java

@GET(path = "/backend/report", permission = "")
String getReport(final @BindRequest ReportRequest request, @BindAuthentication Authentication authentication)
        throws Exception {
    String metric = request.metric();
    if (metric.startsWith("transaction:")) {
        checkPermissions(request.agentRollupIds(), "agent:transaction:overview", authentication);
    } else if (metric.startsWith("error:")) {
        checkPermissions(request.agentRollupIds(), "agent:error:overview", authentication);
    } else if (metric.startsWith("gauge:")) {
        checkPermissions(request.agentRollupIds(), "agent:jvm:gauges", authentication);
    } else {/*from   www.j a v a 2s .  c  o  m*/
        throw new IllegalStateException("Unexpected metric: " + metric);
    }
    final TimeZone timeZone = TimeZone.getTimeZone(request.timeZoneId());
    FromToPair fromToPair = parseDates(request.fromDate(), request.toDate(), timeZone);
    final Date from = fromToPair.from();
    final Date to = fromToPair.to();

    final RollupCaptureTimeFn rollupCaptureTimeFn = new RollupCaptureTimeFn(request.rollup(), timeZone,
            request.fromDate());

    final double gapMillis;
    switch (request.rollup()) {
    case HOURLY:
        gapMillis = HOURS.toMillis(1) * 1.5;
        break;
    case DAILY:
        gapMillis = DAYS.toMillis(1) * 1.5;
        break;
    case WEEKLY:
        gapMillis = DAYS.toMillis(1) * 7 * 1.5;
        break;
    case MONTHLY:
        gapMillis = DAYS.toMillis(1) * 30 * 1.5;
        break;
    default:
        throw new IllegalStateException("Unexpected rollup: " + request.rollup());
    }

    List<Future<DataSeries>> dataSeriesFutures;
    long dataPointIntervalMillis;
    if (metric.startsWith("transaction:") || metric.startsWith("error:")) {
        int rollupLevel = rollupLevelService.getRollupLevelForReport(from.getTime(), DataKind.GENERAL);
        // level 2 (30 min intervals) is the minimum level needed
        rollupLevel = Math.max(rollupLevel, 2);
        if (rollupLevel == 3) {
            verifyFourHourAggregateTimeZone(timeZone);
        }
        dataSeriesFutures = getTransactionReport(request, timeZone, from, to, rollupLevel, rollupCaptureTimeFn,
                gapMillis);
        dataPointIntervalMillis = configRepository.getRollupConfigs().get(rollupLevel).intervalMillis();
    } else if (metric.startsWith("gauge:")) {
        // level 3 (30 min intervals) is the minimum level needed
        final int rollupLevel = Math.max(rollupLevelService.getGaugeRollupLevelForReport(from.getTime()), 3);
        if (rollupLevel == 4) {
            verifyFourHourAggregateTimeZone(timeZone);
        }
        final String gaugeName = metric.substring("gauge:".length());
        dataSeriesFutures = Lists.newArrayList();
        for (final String agentRollupId : request.agentRollupIds()) {
            dataSeriesFutures.add(executor.submit(new Callable<DataSeries>() {
                @Override
                public DataSeries call() throws Exception {
                    return getDataSeriesForGauge(agentRollupId, gaugeName, from, to, rollupLevel,
                            rollupCaptureTimeFn, request.rollup(), timeZone, gapMillis);
                }
            }));
        }
        if (rollupLevel == 0) {
            dataPointIntervalMillis = configRepository.getGaugeCollectionIntervalMillis();
        } else {
            dataPointIntervalMillis = configRepository.getRollupConfigs().get(rollupLevel - 1).intervalMillis();
        }
    } else {
        throw new IllegalStateException("Unexpected metric: " + metric);
    }
    List<DataSeries> dataSeriesList = Lists.newArrayList();
    for (Future<DataSeries> dataSeriesFuture : dataSeriesFutures) {
        dataSeriesList.add(dataSeriesFuture.get());
    }
    StringBuilder sb = new StringBuilder();
    JsonGenerator jg = mapper.getFactory().createGenerator(CharStreams.asWriter(sb));
    try {
        jg.writeStartObject();
        jg.writeObjectField("dataSeries", dataSeriesList);
        jg.writeNumberField("dataPointIntervalMillis", dataPointIntervalMillis);
        jg.writeEndObject();
    } finally {
        jg.close();
    }
    return sb.toString();
}

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From source file:org.glowroot.ui.TraceCommonService.java

private static @Nullable String toJson(@Nullable Entries entries) throws IOException {
    if (entries == null) {
        return null;
    }//from  w w w . jav a  2  s .  com
    StringBuilder sb = new StringBuilder();
    JsonGenerator jg = jsonFactory.createGenerator(CharStreams.asWriter(sb));
    try {
        jg.writeStartObject();
        jg.writeFieldName("entries");
        writeEntries(jg, entries.entries());
        jg.writeFieldName("sharedQueryTexts");
        writeSharedQueryTexts(jg, entries.sharedQueryTexts());
        jg.writeEndObject();
    } finally {
        jg.close();
    }
    return sb.toString();
}

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From source file:org.glowroot.ui.AdminJsonService.java

@GET(path = "/backend/admin/json", permission = "admin:view")
String getAllAdmin() throws Exception {
    Object config;/*from   w  w  w. j  av a2s. com*/
    if (central) {
        config = configRepository.getAllCentralAdminConfig();
    } else {
        config = configRepository.getAllEmbeddedAdminConfig();
    }
    ObjectNode rootNode = mapper.valueToTree(config);
    AllAdminConfigUtil.removePasswords(rootNode);
    ObjectMappers.stripEmptyContainerNodes(rootNode);
    StringBuilder sb = new StringBuilder();
    JsonGenerator jg = mapper.getFactory().createGenerator(CharStreams.asWriter(sb));
    try {
        jg.setPrettyPrinter(ObjectMappers.getPrettyPrinter());
        jg.writeObject(rootNode);
    } finally {
        jg.close();
    }
    // newline is not required, just a personal preference
    sb.append(ObjectMappers.NEWLINE);
    return sb.toString();
}

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From source file:org.glowroot.ui.JvmJsonService.java

@GET(path = "/backend/jvm/heap-dump-default-dir", permission = "agent:jvm:heapDump")
String getHeapDumpDefaultDir(@BindAgentId String agentId) throws Exception {
    checkNotNull(liveJvmService);//from  w w  w .  j a va 2  s .c om
    if (!liveJvmService.isAvailable(agentId)) {
        return "{\"agentNotConnected\":true}";
    }
    Environment environment = environmentRepository.read(agentId);
    checkNotNull(environment);
    StringBuilder sb = new StringBuilder();
    JsonGenerator jg = mapper.getFactory().createGenerator(CharStreams.asWriter(sb));
    try {
        jg.writeStartObject();
        jg.writeStringField("directory", environment.getJavaInfo().getHeapDumpDefaultDir());
        jg.writeEndObject();
    } finally {
        jg.close();
    }
    return sb.toString();
}

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From source file:org.glowroot.local.ui.JvmJsonService.java

@POST("/backend/jvm/dump-heap")
String dumpHeap(String content) throws Exception {
    // this command is filtered out of the UI when service is null
    HeapDumps service = checkNotNull(heapDumps.getService(), "Heap dump service is not available: %s",
            heapDumps.getAvailability().getReason());
    RequestWithDirectory request = mapper.readValue(content, RequestWithDirectory.class);
    File dir = new File(request.directory());
    if (!dir.exists()) {
        return "{\"error\": \"Directory doesn't exist\"}";
    }//from www .j ava 2  s  .c o m
    if (!dir.isDirectory()) {
        return "{\"error\": \"Path is not a directory\"}";
    }
    String timestamp = new SimpleDateFormat("yyyyMMdd-HHmmss").format(new Date());
    File file = new File(dir, "heap-dump-" + timestamp + ".hprof");
    int i = 1;
    while (file.exists()) {
        // this seems unlikely now that timestamp is included in filename
        i++;
        file = new File(dir, "heap-dump-" + timestamp + "-" + i + ".hprof");
    }
    service.dumpHeap(file.getAbsolutePath());

    StringBuilder sb = new StringBuilder();
    JsonGenerator jg = mapper.getFactory().createGenerator(CharStreams.asWriter(sb));
    jg.writeStartObject();
    jg.writeStringField("filename", file.getAbsolutePath());
    jg.writeNumberField("size", file.length());
    jg.writeEndObject();
    jg.close();
    return sb.toString();
}

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From source file:org.glowroot.ui.TraceCommonService.java

private static @Nullable String toJson(@Nullable Queries queries) throws IOException {
    if (queries == null) {
        return null;
    }//  w  ww .  j av a 2  s.c  om
    StringBuilder sb = new StringBuilder();
    JsonGenerator jg = jsonFactory.createGenerator(CharStreams.asWriter(sb));
    try {
        jg.writeStartObject();
        jg.writeFieldName("queries");
        writeQueries(jg, queries.queries());
        jg.writeFieldName("sharedQueryTexts");
        writeSharedQueryTexts(jg, queries.sharedQueryTexts());
        jg.writeEndObject();
    } finally {
        jg.close();
    }
    return sb.toString();
}

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From source file:org.glowroot.ui.TraceCommonService.java

@VisibleForTesting
static @Nullable String entriesToJson(List<Trace.Entry> entries) throws IOException {
    if (entries.isEmpty()) {
        return null;
    }/*from  www .j a v  a  2  s .com*/
    StringBuilder sb = new StringBuilder();
    JsonGenerator jg = jsonFactory.createGenerator(CharStreams.asWriter(sb));
    try {
        writeEntries(jg, entries);
    } finally {
        jg.close();
    }
    return sb.toString();
}

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From source file:org.glowroot.ui.TransactionJsonService.java

@GET(path = "/backend/transaction/queries", permission = "agent:transaction:queries")
String getQueries(@BindAgentRollupId String agentRollupId, @BindRequest TransactionDataRequest request)
        throws Exception {
    AggregateQuery query = toQuery(request, DataKind.QUERY);
    QueryCollector queryCollector = transactionCommonService.getMergedQueries(agentRollupId, query);
    List<MutableQuery> queries = queryCollector.getSortedAndTruncatedQueries();
    if (queries.isEmpty() && fallBackToLargestAggregates(query)) {
        // fall back to largest aggregates in case expiration settings have recently changed
        query = withLargestRollupLevel(query);
        queryCollector = transactionCommonService.getMergedQueries(agentRollupId, query);
        queries = queryCollector.getSortedAndTruncatedQueries();
        if (ignoreFallBackData(query, queryCollector.getLastCaptureTime())) {
            // this is probably data from before the requested time period
            queries = ImmutableList.of();
        }//  ww w.ja va  2 s  .c o  m
    }
    List<Query> queryList = Lists.newArrayList();
    for (MutableQuery loopQuery : queries) {
        queryList.add(ImmutableQuery.builder().queryType(loopQuery.getType())
                .truncatedQueryText(loopQuery.getTruncatedText()).fullQueryTextSha1(loopQuery.getFullTextSha1())
                .totalDurationNanos(loopQuery.getTotalDurationNanos())
                .executionCount(loopQuery.getExecutionCount())
                .totalRows(loopQuery.hasTotalRows() ? loopQuery.getTotalRows() : null).build());
    }
    if (queryList.isEmpty() && aggregateRepository.shouldHaveQueries(agentRollupId, query)) {
        return "{\"overwritten\":true}";
    }
    StringBuilder sb = new StringBuilder();
    JsonGenerator jg = mapper.getFactory().createGenerator(CharStreams.asWriter(sb));
    try {
        jg.writeObject(queryList);
    } finally {
        jg.close();
    }
    return sb.toString();
}

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