public BufferedImage createGraphImage(
long nowInSeconds, SourceIdentifier sourceIdentifier, BufferedImage result, boolean showMax) {
RrdGraphDef graphDef = getGraphDef(nowInSeconds, sourceIdentifier, showMax);
//noinspection SynchronizationOnLocalVariableOrMethodParameter
synchronized (graphDef) {
RrdGraph graph;
try {
graph = new RrdGraph(graphDef);
RrdGraphInfo graphInfo = graph.getRrdGraphInfo();
int width = graphInfo.getWidth();
int height = graphInfo.getHeight();
if (result != null && (result.getWidth() != width || result.getHeight() != height)) {
if (logger.isInfoEnabled()) logger.info("Flushing previous image because of wrong size.");
result.flush();
result = null;
}
if (result == null) {
result = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
if (logger.isInfoEnabled()) logger.info("Created new image.");
}
graph.render(result.getGraphics());
} catch (IOException ex) {
if (logger.isWarnEnabled()) logger.warn("Exception while creating graph!", ex);
if (result != null) {
result.flush();
result = null;
}
}
}
return result;
}
Object execute() throws IOException {
gdef = new RrdGraphDef();
// OPTIONS
// START, END
String t1 = getOptionValue("s", "start", DEFAULT_START),
t2 = getOptionValue("e", "end", DEFAULT_END);
gdef.setTimeSpan(Util.getTimestamps(t1, t2));
// X-GRID
parseXGrid(getOptionValue("x", "x-grid"));
// Y-GRID
parseYGrid(getOptionValue("y", "y-grid"));
// ALT-Y-GRID
gdef.setAltYGrid(getBooleanOption("Y", "alt-y-grid"));
// NO_MINOR
gdef.setNoMinorGrid(getBooleanOption(null, "no-minor"));
// ALT-Y-MRTG
gdef.setAltYMrtg(getBooleanOption("R", "alt-y-mrtg"));
// ALT-AUTOSCALE
gdef.setAltAutoscale(getBooleanOption("A", "alt-autoscale"));
// ALT-AUTOSCALE-MAX
gdef.setAltAutoscaleMax(getBooleanOption("M", "alt-autoscale-max"));
// UNITS-EXPONENT
String opt = getOptionValue("X", "units-exponent");
if (opt != null) {
gdef.setUnitsExponent(parseInt(opt));
}
// UNITS-LENGTH
opt = getOptionValue("L", "units-length");
if (opt != null) {
gdef.setUnitsLength(parseInt(opt));
}
// VERTICAL LABEL
opt = getOptionValue("v", "vertical-label");
if (opt != null) {
gdef.setVerticalLabel(opt);
}
// WIDTH
opt = getOptionValue("w", "width");
if (opt != null) {
gdef.setWidth(parseInt(opt));
}
// HEIGHT
opt = getOptionValue("h", "height");
if (opt != null) {
gdef.setHeight(parseInt(opt));
}
// INTERLACED
gdef.setInterlaced(getBooleanOption("i", "interlaced"));
// IMGINFO
opt = getOptionValue("f", "imginfo");
if (opt != null) {
gdef.setImageInfo(opt);
}
// IMGFORMAT
opt = getOptionValue("a", "imgformat");
if (opt != null) {
gdef.setImageFormat(opt);
}
// BACKGROUND
opt = getOptionValue("B", "background");
if (opt != null) {
gdef.setBackgroundImage(opt);
}
// OVERLAY
opt = getOptionValue("O", "overlay");
if (opt != null) {
gdef.setOverlayImage(opt);
}
// UNIT
opt = getOptionValue("U", "unit");
if (opt != null) {
gdef.setUnit(opt);
}
// LAZY
gdef.setLazy(getBooleanOption("z", "lazy"));
// UPPER-LIMIT
opt = getOptionValue("u", "upper-limit");
if (opt != null) {
gdef.setMaxValue(parseDouble(opt));
}
// LOWER-LIMIT
opt = getOptionValue("l", "lower-limit");
if (opt != null) {
gdef.setMinValue(parseDouble(opt));
}
// RIGID
gdef.setRigid(getBooleanOption("r", "rigid"));
// BASE
opt = getOptionValue("b", "base");
if (opt != null) {
gdef.setBase(parseDouble(opt));
}
// LOGARITHMIC
gdef.setLogarithmic(getBooleanOption("o", "logarithmic"));
// COLORS
parseColors(getMultipleOptionValues("c", "color"));
// NO-LEGEND
gdef.setNoLegend(getBooleanOption("g", "no-legend"));
// ONLY_GRAPH
gdef.setOnlyGraph(getBooleanOption("j", "only-graph"));
// FORCE-RULES-LEGEND
gdef.setForceRulesLegend(getBooleanOption("F", "force-rules-legend"));
// TITLE
opt = getOptionValue("t", "title");
if (opt != null) {
gdef.setTitle(opt);
}
// STEP
opt = getOptionValue("S", "step");
if (opt != null) {
gdef.setStep(parseLong(opt));
}
// NON-OPTIONS
String[] words = getRemainingWords();
// the first word must be a filename
if (words.length < 2) {
throw new IllegalArgumentException("Image filename must be specified");
}
gdef.setFilename(words[1]);
// parse remaining words, in no particular order
for (int i = 2; i < words.length; i++) {
if (words[i].startsWith("DEF:")) {
parseDef(words[i]);
} else if (words[i].startsWith("CDEF:")) {
parseCDef(words[i]);
} else if (words[i].startsWith("PRINT:")) {
parsePrint(words[i]);
} else if (words[i].startsWith("GPRINT:")) {
parseGPrint(words[i]);
} else if (words[i].startsWith("COMMENT:")) {
parseComment(words[i]);
} else if (words[i].startsWith("HRULE:")) {
parseHRule(words[i]);
} else if (words[i].startsWith("VRULE:")) {
parseVRule(words[i]);
} else if (words[i].startsWith("LINE1:")
|| words[i].startsWith("LINE2:")
|| words[i].startsWith("LINE3:")) {
parseLine(words[i]);
} else if (words[i].startsWith("AREA:")) {
parseArea(words[i]);
} else if (words[i].startsWith("STACK:")) {
parseStack(words[i]);
} else {
throw new IllegalArgumentException("Unexpected GRAPH token encountered: " + words[i]);
}
}
// create diagram finally
RrdGraphInfo info = new RrdGraph(gdef).getRrdGraphInfo();
if (info.getFilename().equals(RrdGraphConstants.IN_MEMORY_IMAGE)) {
println(new String(info.getBytes()));
} else {
println(info.getWidth() + "x" + info.getHeight());
String[] plines = info.getPrintLines();
for (String pline : plines) {
println(pline);
}
if (info.getImgInfo() != null && info.getImgInfo().length() > 0) {
println(info.getImgInfo());
}
}
return info;
}