update authentication documentation

AUTHENTICATION.md

@@ -0,0 +1,77 @@
+# Authenticating to NewRelic API
+
+## Table of Contents
+
+- [Authenticating to NewRelic API](#authenticating-to-newrelic-api)
+  - [Table of Contents](#table-of-contents)
+  - [Overview](#overview)
+  - [Using `ProviderConfig`](#using-providerconfig)
+
+## Overview
+
+`crossplane-provider-newrelic` requires credentials to be provided in order to authenticate to the
+NewRelic API. As this provider is upjet based, the authentication mechanism mirrors the terraform provider configuration.
+This is described in detail in the
+  [provider_configuration guide](https://registry.terraform.io/providers/newrelic/newrelic/latest/docs/guides/provider_configuration#configuration-via-the-provider-block).
+
+## Using `ProviderConfig`
+
+`crossplane-provider-newrelic` will be use credentials stored in a secret and referenced from a `ProviderConfig`.
+
+The first thing that needs to be done is to create a `ProviderConfig`:
+
+```console
+$ cat <<EOF | kubectl apply -f -
+apiVersion: provider-newrelic.upbound.io/v1beta1
+kind: ProviderConfig
+metadata:
+  name: default-us
+spec:
+  credentials:
+    source: Secret
+    secretRef:
+      name: example-creds-us
+      namespace: crossplane-system
+      key: credentials
+EOF
+```
+
+Next create a secret as referenced from the `ProviderConfig`:
+
+```console
+$ cat <<EOF | kubectl apply -f -
+apiVersion: v1
+kind: Secret
+metadata:
+  name: example-creds-us
+  namespace: crossplane-system
+type: Opaque
+stringData:
+  credentials: |
+    {
+      "account_id": "NEW_RELIC_ACCOUNT_ID", # required.
+      "api_key": "NEW_RELIC_API_KEY", # required.  Usually prefixed with 'NRAK'
+      "region": "US" # optional.  Valid regions are US and EU
+    }
+EOF
+```
+
+You may now reference the `ProviderConfig` in your resources:
+```console
+$ cat <<EOF | kubectl apply -f -
+---
+apiVersion: alert.newrelic.upbound.io/v1alpha1
+kind: Policy
+metadata:
+  name: example-policy
+spec:
+  forProvider:
+    incidentPreference: PER_POLICY
+    name: example-policy
+  providerConfigRef:
+    name: default-us
+EOF
+```
+
+Multiple `ProviderConfigs` can be used to switch between credentials when more than
+one target account or region is being reconciled by the provider.

README.md

@@ -1,9 +1,5 @@
 # Provider NewRelic
 
-# https://github.com/newrelic/terraform-provider-newrelic/tree/main/newrelic
-# https://github.com/upbound/upjet-provider-template
-# https://github.com/crossplane/upjet/blob/v0.10.0/docs/add-new-resource-short.md
-
 `crossplane-provider-newrelic` is a [Crossplane](https://crossplane.io/) provider that
 is built using [Upjet](https://github.com/crossplane/upjet) code
 generation tools and exposes XRM-conformant managed resources for the
@@ -12,7 +8,7 @@ NewRelic API.
 ## Getting Started
 
 Install the provider by using the following command after changing the image tag
-to the [latest release](https://marketplace.upbound.io/providers/upbound/provider-newrelic):
+to the [latest release](https://marketplace.upbound.io/providers/crossplane-contrib/crossplane-provider-newrelic):
 ```
 up ctp provider install crossplane-contrib/crossplane-provider-newrelic:v0.1.0
 ```
@@ -34,16 +30,22 @@ Notice that in this example Provider resource is referencing ControllerConfig wi
 You can see the API reference [here](https://doc.crds.dev/github.com/upbound/provider-newrelic).
 
 ## Authentication
-See - /examples/providerconfig/providerconfig.yaml
-See - /examples/providerconfig/secret.yaml.tmpl
+This is documented in [AUTHENTICATION.md](AUTHENTICATION.md).
+* [examples/providerconfig/providerconfig.yaml](examples/providerconfig/providerconfig.yaml)
+* [examples/providerconfig/secret.yaml.tmpl](examples/providerconfig/secret.yaml.tmpl)
 
 # Currently Supported Resources
-* `alert_policy` - /examples/alert/policy.yaml
-* `nrql_alert_condition`
-* `dashboardjson` - /examples/dashboard/dashboardjson.yaml
-* `alert_destination`
-* `alert_channel`
-* `workflow` - /examples/workflow/workflow.yaml
+* `alert_channel` - [examples-generated/alert/channel.yaml](examples-generated/alert/channel.yaml).
+* `alert_destination` - [examples/alert/destination.yaml](examples/alert/destination.yaml).
+* `alert_policy` - [examples/alert/policy.yaml](examples/alert/policy.yaml).
+* `dashboardjson` - [examples/dashboard/dashboardjson.yaml](examples/dashboard/dashboardjson.yaml).
+* `nrql_alert_condition` - [examples-generated/nrql/alertcondition.yaml](examples-generated/nrql/alertcondition.yaml).
+* `workflow` - [examples/workflow/workflow.yaml](examples/workflow/workflow.yaml).
+
+## Upstream Documentation
+* https://github.com/newrelic/terraform-provider-newrelic/tree/main/newrelic
+* https://github.com/upbound/upjet-provider-template
+* https://github.com/crossplane/upjet/blob/v0.10.0/docs/add-new-resource-short.md
 
 ## Developing
 
@@ -73,4 +75,4 @@ make build
 ## Report a Bug
 
 For filing bugs, suggesting improvements, or requesting new features, please
-open an [issue](https://github.com/upbound/provider-newrelic/issues).
+open an [issue](https://github.com/crossplane-contribb/crossplane-provider-newrelic/issues).

examples/providerconfig/secret.yaml.tmpl

@@ -7,6 +7,7 @@ type: Opaque
 stringData:
   credentials: |
     {
-      "username": "admin",
-      "password": "t0ps3cr3t11"
+      "account_id": "NEW_RELIC_ACCOUNT_ID", # required.
+      "api_key": "NEW_RELIC_API_KEY", # required.  Usually prefixed with 'NRAK'
+      "region": "US" # optional.  Valid regions are US and EU
     }