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Bug 782117 - part 2: don't save pings that already exist on disk; r=taras

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This commit is contained in:
Nathan Froyd 2012-08-13 09:26:24 -04:00
parent 1c8371b1b2
commit 3a151ada0a
1 changed files with 20 additions and 8 deletions
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28
toolkit/components/telemetry/TelemetryPing.js
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@ -27,6 +27,7 @@ const TELEMETRY_DELAY = 60000;
const PR_WRONLY = 0x2;
const PR_CREATE_FILE = 0x8;
const PR_TRUNCATE = 0x20;
const PR_EXCL = 0x80;
const RW_OWNER = 0600;
const RWX_OWNER = 0700;
@ -817,7 +818,7 @@ TelemetryPing.prototype = {
}
},
savePingToFile: function savePingToFile(ping, file, sync) {
savePingToFile: function savePingToFile(ping, file, sync, overwrite) {
let pingString = JSON.stringify(ping);
let converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"]
@ -826,8 +827,16 @@ TelemetryPing.prototype = {
let ostream = Cc["@mozilla.org/network/file-output-stream;1"]
.createInstance(Ci.nsIFileOutputStream);
ostream.init(file, PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE,
RW_OWNER, ostream.DEFER_OPEN);
let initFlags = PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE;
if (!overwrite) {
initFlags |= PR_EXCL;
}
try {
ostream.init(file, initFlags, RW_OWNER, ostream.DEFER_OPEN);
} catch (e) {
// Probably due to PR_EXCL.
return;
}
if (sync) {
let utf8String = converter.ConvertFromUnicode(pingString);
@ -885,19 +894,22 @@ TelemetryPing.prototype = {
return file;
},
savePing: function savePing(ping) {
this.savePingToFile(ping, this.saveFileForPing(ping), true);
savePing: function savePing(ping, overwrite) {
this.savePingToFile(ping, this.saveFileForPing(ping), true, overwrite);
},
savePendingPings: function savePendingPings() {
this._pendingPings.push(this.getCurrentSessionPayloadAndSlug("saved-session"));
this._pendingPings.forEach(function sppcb(e, i, a) { this.savePing(e); }, this);
let sessionPing = this.getCurrentSessionPayloadAndSlug("saved-session");
this.savePing(sessionPing, true);
this._pendingPings.forEach(function sppcb(e, i, a) {
this.savePing(e, false);
}, this);
this._pendingPings = [];
},
saveHistograms: function saveHistograms(file, sync) {
this.savePingToFile(this.getCurrentSessionPayloadAndSlug("saved-session"),
file, sync);
file, sync, true);
},
/**