From 9772228e4f6367d6602171002bf6283ee54d5b49 Mon Sep 17 00:00:00 2001
From: Luc Perkins <luc.perkins@datadoghq.com>
Date: Thu, 2 Dec 2021 12:14:51 -0500
Subject: [PATCH 1/2] Add metric transform demo

Signed-off-by: Luc Perkins <luc.perkins@datadoghq.com>
---
 transform-metrics/docker-compose.yml |  6 ++++++
 transform-metrics/vector/vector.toml | 31 ++++++++++++++++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 transform-metrics/docker-compose.yml
 create mode 100644 transform-metrics/vector/vector.toml

diff --git a/transform-metrics/docker-compose.yml b/transform-metrics/docker-compose.yml
new file mode 100644
index 0000000..031fbec
--- /dev/null
+++ b/transform-metrics/docker-compose.yml
@@ -0,0 +1,6 @@
+version: '3.8'
+services:
+  vector:
+    image: timberio/vector:nightly-alpine
+    volumes:
+      - ./vector:/etc/vector:ro
diff --git a/transform-metrics/vector/vector.toml b/transform-metrics/vector/vector.toml
new file mode 100644
index 0000000..8cc3d91
--- /dev/null
+++ b/transform-metrics/vector/vector.toml
@@ -0,0 +1,31 @@
+[sources.vector_metrics]
+type = "internal_metrics"
+scrape_interval_secs = 5
+
+[transforms.limit_cardinality]
+type = "tag_cardinality_limit"
+inputs = ["vector_metrics"]
+mode = "exact"
+
+# Change the namespace and add tags to each metric; conditionally change
+# the metric name
+[transforms.modify_metrics]
+type = "remap"
+inputs = ["limit_cardinality"]
+source = '''
+if .name == "utilization" {
+  .name = "component_utilization"
+}
+
+.tags = {
+  "env": "staging"
+}
+
+.timestamp = format_timestamp!(now(), "%s")
+'''
+
+[sinks.console_out]
+type = "console"
+inputs = ["modify_metrics"]
+target = "stdout"
+encoding = { codec = "json" }

From 9e464af663229beb584341486af18c6e0ff3bac3 Mon Sep 17 00:00:00 2001
From: Luc Perkins <luc.perkins@datadoghq.com>
Date: Thu, 2 Dec 2021 12:20:47 -0500
Subject: [PATCH 2/2] Remove ineffectual timestamp formatting operation

Signed-off-by: Luc Perkins <luc.perkins@datadoghq.com>
---
 transform-metrics/vector/vector.toml | 2 --
 1 file changed, 2 deletions(-)

diff --git a/transform-metrics/vector/vector.toml b/transform-metrics/vector/vector.toml
index 8cc3d91..1b2eb83 100644
--- a/transform-metrics/vector/vector.toml
+++ b/transform-metrics/vector/vector.toml
@@ -20,8 +20,6 @@ if .name == "utilization" {
 .tags = {
   "env": "staging"
 }
-
-.timestamp = format_timestamp!(now(), "%s")
 '''
 
 [sinks.console_out]