Flux 0.84 (#1432)

* added flux 0.84 release notes

* Flux Opsgenie package (#1431)

* added the flux Opsgenie package

* minor update to opsgenie pkg description

content/influxdb/v2.0/reference/flux/stdlib/contrib/opsgenie/_index.md

@@ -0,0 +1,32 @@
+---
+title: Flux Opsgenie package
+list_title: Opsgenie package
+description: >
+  The Flux Opsgenie package provides functions that send alerts to
+  [Atlassian Opsgenie](https://www.atlassian.com/software/opsgenie) using the
+  [Opsgenie v2 API](https://docs.opsgenie.com/docs/alert-api#create-alert).
+  Import the `contrib/sranka/opsgenie` package.
+menu:
+  influxdb_2_0_ref:
+    name: Opsgenie
+    parent: Contributed
+weight: 202
+influxdb/v2.0/tags: [functions, opsgenie, package]
+---
+
+The Flux Opsgenie package provides functions that send alerts to
+[Atlassian Opsgenie](https://www.atlassian.com/software/opsgenie) using the
+[Opsgenie v2 API](https://docs.opsgenie.com/docs/alert-api#create-alert).
+Import the `contrib/sranka/opsgenie` package:
+
+```js
+import "contrib/sranka/opsgenie"
+```
+
+{{< children type="functions" show="pages" >}}
+
+{{% note %}}
+#### Package author and maintainer
+**Github:** [@sranka](https://github.com/sranka)  
+**InfluxDB Slack:** [@sranka](https://influxdata.com/slack)
+{{% /note %}}

content/influxdb/v2.0/reference/flux/stdlib/contrib/opsgenie/endpoint.md

@@ -0,0 +1,104 @@
+---
+title: opsgenie.endpoint() function
+description: >
+  The `opsgenie.endpoint()` function sends an alert message to Opsgenie using data from table rows.
+menu:
+  influxdb_2_0_ref:
+    name: opsgenie.endpoint
+    parent: Opsgenie
+weight: 202
+---
+
+The `opsgenie.endpoint()` function sends an alert message to Opsgenie using data from table rows.
+
+_**Function type:** Output_
+
+```js
+import "contrib/sranka/opsgenie"
+
+opsgenie.endpoint(
+  url: "https://api.opsgenie.com/v2/alerts",
+  apiKey: "YoUrSup3R5ecR37AuThK3y",
+  entity: "example-entity"
+)
+```
+
+## Parameters
+
+### url
+Opsgenie API URL.
+Defaults to `https://api.opsgenie.com/v2/alerts`.
+
+_**Data type:** String_
+
+### apiKey
+<span class="req">Required</span>
+Opsgenie API authorization key.
+
+_**Data type:** String_
+
+### entity
+Alert entity used to specify the alert domain.
+
+_**Data type:** String_
+
+## Usage
+`opsgenie.endpoint` is a factory function that outputs another function.
+The output function requires a `mapFn` parameter.
+
+### mapFn
+A function that builds the record used to generate the POST request.
+Requires an `r` parameter.
+
+_**Data type:** Function_
+
+`mapFn` accepts a table row (`r`) and returns a record that must include the
+following fields:
+
+- `message`
+- `alias`
+- `description`
+- `priority`
+- `responders`
+- `tags`
+- `actions`
+- `details`
+- `visibleTo`
+
+_For more information, see [`opsgenie.sendAlert()`](/influxdb/v2.0/reference/flux/stdlib/contrib/opsgenie/sendalert/)._
+
+## Examples
+
+##### Send critical statuses to Opsgenie
+```js
+import "influxdata/influxdb/secrets"
+import "contrib/sranka/opsgenie"
+
+apiKey = secrets.get(key: "OPSGENIE_APIKEY")
+endpoint = opsgenie.endpoint(apiKey: apiKey)
+
+crit_statuses = from(bucket: "example-bucket")
+  |> range(start: -1m)
+  |> filter(fn: (r) => r._measurement == "statuses" and status == "crit")
+
+crit_statuses
+  |> endpoint(mapFn: (r) => ({
+    message: "Great Scott!- Disk usage is: ${r.status}.",
+      alias: "disk-usage-${r.status}",
+      description: "",
+      priority: "P3",
+      responders: ["user:john@example.com", "team:itcrowd"],
+      tags: [],
+      entity: "my-lab",
+      actions: [],
+      details: "{}",
+      visibleTo: []
+    })
+  )()
+```
+
+{{% note %}}
+#### Package author and maintainer
+**Github:** [@sranka](https://github.com/sranka)  
+**InfluxDB Slack:** [@sranka](https://influxdata.com/slack)
+{{% /note %}}

content/influxdb/v2.0/reference/flux/stdlib/contrib/opsgenie/sendalert.md

@@ -0,0 +1,142 @@
+---
+title: opsgenie.sendAlert() function
+description: >
+  The `opsgenie.sendAlert()` function sends an alert message to Opsgenie.
+menu:
+  influxdb_2_0_ref:
+    name: opsgenie.sendAlert
+    parent: Opsgenie
+weight: 202
+---
+
+The `opsgenie.sendAlert()` function sends an alert message to Opsgenie.
+
+_**Function type:** Output_
+
+```js
+import "contrib/sranka/opsgenie"
+
+opsgenie.sendAlert(
+  url: "https://api.opsgenie.com/v2/alerts",
+  apiKey: "YoUrSup3R5ecR37AuThK3y",
+  message: "Example message",
+  alias: "Example alias",
+  description: "Example description",
+  priority: "P3",
+  responders: ["user:john@example.com", "team:itcrowd"],
+  tags: ["tag1", "tag2"],
+  entity: "example-entity",
+  actions: ["action1", "action2"],
+  details: "{}",
+  visibleTo: []
+)
+```
+
+## Parameters
+
+### url
+Opsgenie API URL.
+Defaults to `https://api.opsgenie.com/v2/alerts`.
+
+_**Data type:** String_
+
+### apiKey
+<span class="req">Required</span>
+Opsgenie API authorization key.
+
+_**Data type:** String_
+
+### message
+<span class="req">Required</span>
+Alert message text.
+130 characters or less.
+
+_**Data type:** String_
+
+### alias
+Opsgenie alias usee to de-deduplicate alerts.
+250 characters or less.
+Defaults to [message](#message).
+
+_**Data type:** String_
+
+### description
+Alert description.
+15000 characters or less.
+
+_**Data type:** String_
+
+### priority
+Opsgenie [alert priority](https://docs.opsgenie.com/docs/alert-priority-settings).
+Valid values include:
+
+- `P1`
+- `P2`
+- `P3` _(default)_
+- `P4`
+- `P5`
+
+_**Data type:** String_
+
+### responders
+List of responder teams or users.
+Use the `user:` prefix for users and `teams:` prefix for teams.
+
+_**Data type:** Array of strings_
+
+### tags
+Alert tags.
+
+_**Data type:** Array of strings_
+
+### entity
+Alert entity used to specify the alert domain.
+
+_**Data type:** String_
+
+### actions
+List of actions available for the alert.
+
+_**Data type:** Array of strings_
+
+### details
+Additional alert details.
+Must be a JSON-encoded map of key-value string pairs.
+
+_**Data type:** String_
+
+### visibleTo
+List of teams and users the alert will be visible to without sending notifications.
+Use the `user:` prefix for users and `teams:` prefix for teams.
+
+_**Data type:** Array of strings_
+
+## Examples
+
+##### Send the last reported status to a Opsgenie
+```js
+import "influxdata/influxdb/secrets"
+import "contrib/sranka/opsgenie"
+
+apiKey = secrets.get(key: "OPSGENIE_APIKEY")
+
+lastReported =
+  from(bucket: "example-bucket")
+    |> range(start: -1m)
+    |> filter(fn: (r) => r._measurement == "statuses")
+    |> last()
+    |> findRecord(fn: (key) => true, idx: 0)
+
+    opsgenie.sendAlert(
+      apiKey: apiKey,
+      message: "Disk usage is: ${lastReported.status}.",
+      alias: "example-disk-usage",
+      responders: ["user:john@example.com", "team:itcrowd"]
+    )
+```
+
+{{% note %}}
+#### Package author and maintainer
+**Github:** [@sranka](https://github.com/sranka)  
+**InfluxDB Slack:** [@sranka](https://influxdata.com/slack)
+{{% /note %}}

content/influxdb/v2.0/reference/release-notes/flux.md

@@ -14,6 +14,22 @@ Though newer versions of Flux may be available, they will not be included with
 InfluxDB until the next InfluxDB v2.0 release._
 {{% /note %}}
 
+## v0.84.0 [2020-09-09]
+
+### Breaking changes
+- Remove time-column parameters from `range()` function and update type signature.
+
+### Features
+- Add [Opsgenie package](/influxdb/v2.0/reference/flux/stdlib/contrib/opsgenie/).
+- Implement [`lastSuccess()`](/influxdb/v2.0/reference/flux/stdlib/influxdb-tasks/lastsuccess/) in the `tasks` package.
+- Support duration values in `aggregateWindow`.
+- Update Apache Arrow to 1.0.1.
+
+### Bug fixes
+- Ensure meta columns are never part of group key.
+
+---
+
 ## v0.83.1 [2020-09-02]
 
 ### Bug fixes