From e1a2b258afa2626e5045897af674f03312988c36 Mon Sep 17 00:00:00 2001
From: Mitsuhiro Tanda <mitsuhiro.tanda@gmail.com>
Date: Thu, 21 Mar 2019 09:52:26 +0900
Subject: [PATCH 1/3] deduplicate same value annotation

---
 public/app/plugins/datasource/prometheus/datasource.ts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/public/app/plugins/datasource/prometheus/datasource.ts b/public/app/plugins/datasource/prometheus/datasource.ts
index bde56431683..9f8a912e554 100644
--- a/public/app/plugins/datasource/prometheus/datasource.ts
+++ b/public/app/plugins/datasource/prometheus/datasource.ts
@@ -354,6 +354,7 @@ export class PrometheusDatasource implements DataSourceApi<PromQuery> {
           })
           .value();
 
+        const dupCheck = {};
         for (const value of series.values) {
           const valueIsTrue = value[1] === '1'; // e.g. ALERTS
           if (valueIsTrue || annotation.useValueForTime) {
@@ -365,6 +366,10 @@ export class PrometheusDatasource implements DataSourceApi<PromQuery> {
             };
 
             if (annotation.useValueForTime) {
+              if (dupCheck[value[1]]) {
+                continue;
+              }
+              dupCheck[value[1]] = true;
               event['time'] = Math.floor(parseFloat(value[1]));
             } else {
               event['time'] = Math.floor(parseFloat(value[0])) * 1000;

From e868475c5b5f2ead9404f12e9e9aeebe9917805c Mon Sep 17 00:00:00 2001
From: Mitsuhiro Tanda <mitsuhiro.tanda@gmail.com>
Date: Thu, 21 Mar 2019 15:48:22 +0900
Subject: [PATCH 2/3] simplify

---
 public/app/plugins/datasource/prometheus/datasource.ts | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/public/app/plugins/datasource/prometheus/datasource.ts b/public/app/plugins/datasource/prometheus/datasource.ts
index 9f8a912e554..68e3cdb8149 100644
--- a/public/app/plugins/datasource/prometheus/datasource.ts
+++ b/public/app/plugins/datasource/prometheus/datasource.ts
@@ -366,11 +366,12 @@ export class PrometheusDatasource implements DataSourceApi<PromQuery> {
             };
 
             if (annotation.useValueForTime) {
-              if (dupCheck[value[1]]) {
+              const timestampValue = Math.floor(parseFloat(value[1]));
+              if (dupCheck[timestampValue]) {
                 continue;
               }
-              dupCheck[value[1]] = true;
-              event['time'] = Math.floor(parseFloat(value[1]));
+              dupCheck[timestampValue] = true;
+              event['time'] = timestampValue;
             } else {
               event['time'] = Math.floor(parseFloat(value[0])) * 1000;
             }

From 38457fabc1067973fcbddf6dd8b6d7d9b0ab7a2a Mon Sep 17 00:00:00 2001
From: Mitsuhiro Tanda <mitsuhiro.tanda@gmail.com>
Date: Thu, 21 Mar 2019 16:39:37 +0900
Subject: [PATCH 3/3] fix, assign by event.time

---
 public/app/plugins/datasource/prometheus/datasource.ts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/public/app/plugins/datasource/prometheus/datasource.ts b/public/app/plugins/datasource/prometheus/datasource.ts
index 68e3cdb8149..c24000db092 100644
--- a/public/app/plugins/datasource/prometheus/datasource.ts
+++ b/public/app/plugins/datasource/prometheus/datasource.ts
@@ -358,7 +358,7 @@ export class PrometheusDatasource implements DataSourceApi<PromQuery> {
         for (const value of series.values) {
           const valueIsTrue = value[1] === '1'; // e.g. ALERTS
           if (valueIsTrue || annotation.useValueForTime) {
-            const event = {
+            const event: any = {
               annotation: annotation,
               title: self.resultTransformer.renderTemplate(titleFormat, series.metric),
               tags: tags,
@@ -371,9 +371,9 @@ export class PrometheusDatasource implements DataSourceApi<PromQuery> {
                 continue;
               }
               dupCheck[timestampValue] = true;
-              event['time'] = timestampValue;
+              event.time = timestampValue;
             } else {
-              event['time'] = Math.floor(parseFloat(value[0])) * 1000;
+              event.time = Math.floor(parseFloat(value[0])) * 1000;
             }
 
             eventList.push(event);