public static FileInputStream resetInput(FileInputStream stream, File in, long toPoint)
throws IOException {
stream.close();
FileInputStream ret = new FileInputStream(in);
ret.skip(toPoint);
return ret;
}
/** 准备更新一个新的xml */
public void init4updateXml() {
try {
fis = new FileInputStream(fullPath);
fis.skip(headBytes.getBytes().length);
builder = new SAXBuilder();
doc = builder.build(fis);
root = doc.getRootElement();
nodes = root.getChild("nodes");
} catch (Exception e) {
e.printStackTrace();
SysLogger.error("Error in XmlOperator.init4updateXml(),file=" + fullPath);
}
}
private void calculateDigest() {
assert headSize.get() == headLength : "Head hasn't catched up, can't calculate digest";
try {
FileInputStream stream = new FileInputStream(file);
stream.skip(headLength);
byte[] buffer = new byte[4096];
int bytesRead;
while ((bytesRead = stream.read(buffer, 0, 4096)) > 0) {
md.update(buffer, 0, bytesRead);
}
stream.close();
} catch (IOException ex) {
logger.error("error accessing file to calculate digest", ex);
}
}
/**
* Skips at most {@code n} bytes in this stream. This method does nothing and returns 0 if {@code
* n} is negative, but some subclasses may throw.
*
* <p>Note the "at most" in the description of this method: this method may choose to skip fewer
* bytes than requested. Callers should <i>always</i> check the return value.
*
* <p>This default implementation reads bytes into a temporary buffer. Concrete subclasses should
* provide their own implementation.
*
* @param byteCount the number of bytes to skip.
* @return the number of bytes actually skipped.
* @throws IOException if this stream is closed or another IOException occurs.
*/
@Override
public long skip(long byteCount) throws IOException {
return fis.skip(byteCount);
}
/**
* Serves file from homeDir and its' subdirectories (only). Uses only URI, ignores all headers and
* HTTP parameters.
*/
Response serveFile(String uri, Map<String, String> header, File file, String mime) {
Response res;
try {
// Calculate etag
String etag =
Integer.toHexString(
(file.getAbsolutePath() + file.lastModified() + "" + file.length()).hashCode());
// Support (simple) skipping:
long startFrom = 0;
long endAt = -1;
String range = header.get("range");
if (range != null) {
if (range.startsWith("bytes=")) {
range = range.substring("bytes=".length());
int minus = range.indexOf('-');
try {
if (minus > 0) {
startFrom = Long.parseLong(range.substring(0, minus));
endAt = Long.parseLong(range.substring(minus + 1));
}
} catch (NumberFormatException ignored) {
}
}
}
// Change return code and add Content-Range header when skipping is
// requested
long fileLen = file.length();
if (range != null && startFrom >= 0) {
if (startFrom >= fileLen) {
res = createResponse(Response.Status.RANGE_NOT_SATISFIABLE, NanoHTTPD.MIME_PLAINTEXT, "");
res.addHeader("Content-Range", "bytes 0-0/" + fileLen);
res.addHeader("ETag", etag);
} else {
if (endAt < 0) {
endAt = fileLen - 1;
}
long newLen = endAt - startFrom + 1;
if (newLen < 0) {
newLen = 0;
}
final long dataLen = newLen;
FileInputStream fis =
new FileInputStream(file) {
@Override
public int available() throws IOException {
return (int) dataLen;
}
};
fis.skip(startFrom);
res = createResponse(Response.Status.PARTIAL_CONTENT, mime, fis);
res.addHeader("Content-Length", "" + dataLen);
res.addHeader("Content-Range", "bytes " + startFrom + "-" + endAt + "/" + fileLen);
res.addHeader("ETag", etag);
}
} else {
if (etag.equals(header.get("if-none-match")))
res = createResponse(Response.Status.NOT_MODIFIED, mime, "");
else {
res = createResponse(Response.Status.OK, mime, new FileInputStream(file));
res.addHeader("Content-Length", "" + fileLen);
res.addHeader("ETag", etag);
}
}
} catch (IOException ioe) {
res =
createResponse(
Response.Status.FORBIDDEN,
NanoHTTPD.MIME_PLAINTEXT,
"FORBIDDEN: Reading file failed.");
}
return res;
}
/** @author nielin modify at 2010-01-08 */
public int writeXml(int flag) {
int done = 0;
// 需要做分布式判断
String runmodel = PollingEngine.getCollectwebflag();
try {
I_HostLastCollectData hostlastmanager = new HostLastCollectDataManager();
Hashtable ipAllData = (Hashtable) ShareData.getSharedata().get(ipaddress);
Vector vector = new Vector();
String[] netInterfaceItem = {
"index",
"ifDescr",
"ifSpeed",
"ifAdminStatus",
"ifOperStatus",
"OutBandwidthUtilHdx",
"InBandwidthUtilHdx"
};
try {
if ("0".equals(runmodel)) {
// 采集与访问是集成模式
vector = hostlastmanager.getInterface_share(ipaddress, netInterfaceItem, "index", "", "");
} else {
// 采集与访问是分离模式
vector = hostlastmanager.getInterface(ipaddress, netInterfaceItem, "index", "", "");
}
} catch (Exception e) {
e.printStackTrace();
return done;
}
try {
_fis =
new FileInputStream(
ResourceCenter.getInstance().getSysPath()
+ "panel/model/"
+ oid
+ "_"
+ imageType
+ ".jsp");
} catch (Exception e) {
e.printStackTrace();
_fis.close();
return done;
}
_fis.skip(headBytes.getBytes().length);
_builder = new SAXBuilder();
_doc = _builder.build(_fis);
_root = _doc.getRootElement();
_nodes = _root.getChild("nodes");
List list = _nodes.getChildren();
PortconfigDao dao = new PortconfigDao();
try {
for (int i = 0; i < list.size(); i++) {
Element eleNode = (Element) list.get(i);
if (eleNode.getChildText("index") == null) break;
int index = Integer.valueOf(eleNode.getChildText("index")).intValue();
String x = eleNode.getChildText("x");
String y = eleNode.getChildText("y");
String img = eleNode.getChildText("img");
String direction = eleNode.getChildText("direction");
String ifname = "";
String OutBandwidthUtilHdx = "0";
String InBandwidthUtilHdx = "0";
String portuse = "";
if (vector != null && vector.size() > 0) {
for (int m = 0; m < vector.size(); m++) {
String[] strs = (String[]) vector.get(m);
String _ifname = strs[1];
String _index = strs[0];
String opstatus = strs[4];
OutBandwidthUtilHdx = strs[5];
InBandwidthUtilHdx = strs[6];
Portconfig portconfig = null;
try {
portconfig = dao.getPanelByipandindex(ipaddress, index + "");
} catch (Exception e) {
}
if (portconfig != null
&& portconfig.getLinkuse() != null
&& portconfig.getLinkuse().trim().length() > 0) {
portuse = portconfig.getLinkuse();
}
// SysLogger.info(ipaddress+"====ifOperStatus====="+strs[4]);
if (Integer.parseInt(_index) == index) {
ifname = _ifname;
if ("down".equalsIgnoreCase(opstatus)) {
// DOWN
if ("1".equalsIgnoreCase(direction)) {
// 向上的端口
img = "image/up_down_gray.gif";
} else {
// 向下的端口
img = "image/down_down_gray.gif";
}
} else {
// UP
if ("1".equalsIgnoreCase(direction)) {
// 向上的端口
img = "image/up_up_green.gif";
} else {
// 向下的端口
img = "image/down_up_green.gif";
}
}
break;
}
}
}
addNode(
index + "",
InBandwidthUtilHdx,
OutBandwidthUtilHdx,
img,
ipaddress,
ifname,
portuse,
x,
y);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
dao.close();
}
Format format = Format.getCompactFormat();
format.setEncoding("GB2312");
format.setIndent(" ");
serializer = new XMLOutputter(format);
// SysLogger.info("path==="+fullPath);
fos = new FileOutputStream(fullPath);
fos.write(headBytes.getBytes());
serializer.output(doc, fos);
fos.close();
done = 1;
} catch (Exception e) {
done = 0;
e.printStackTrace();
SysLogger.error("Error in XmlOperator.close()", e);
}
return done;
}
