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Correctly handle empty data set in the console view (#3521)

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When there is an empty result set, the Prometheus server replies with

{"status":"success","data":{"resultType":"vector","result":null}}

That "null" reply was not handled correctly by the graphing library.
This commit handles that case and shows "no data" in the UI console view
instead of throwing an error in the browser javascript console.

Fixes #3515

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
This commit is contained in:
Julien Pivotto 2017-11-30 11:04:02 +01:00 committed by Brian Brazil
parent b3ff5f6b0e
commit 52c0121890
2 changed files with 3 additions and 3 deletions
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2
web/ui/bindata.go
View file

@ -465,7 +465,7 @@ func webUiStaticJsGraphJs() (*asset, error) {
return nil, err
}
info := bindataFileInfo{name: "web/ui/static/js/graph.js", size: 29862, mode: os.FileMode(420), modTime: time.Unix(1511639377, 0)}
info := bindataFileInfo{name: "web/ui/static/js/graph.js", size: 29928, mode: os.FileMode(420), modTime: time.Unix(1512035831, 0)}
a := &asset{bytes: bytes, info: info}
return a, nil
}

4
web/ui/static/js/graph.js
View file

@ -451,7 +451,7 @@ Prometheus.Graph.prototype.submitQuery = function() {
if (xhr.responseJSON.data !== undefined) {
if (xhr.responseJSON.data.resultType === "scalar") {
totalTimeSeries = 1;
} else {
} else if(xhr.responseJSON.data.result !== null) {
totalTimeSeries = xhr.responseJSON.data.result.length;
}
}
@ -720,7 +720,7 @@ Prometheus.Graph.prototype.handleConsoleResponse = function(data, textStatus) {
switch(data.resultType) {
case "vector":
if (data.result.length === 0) {
if (data.result === null || data.result.length === 0) {
tBody.append("<tr><td colspan='2'><i>no data</i></td></tr>");
return;
}