Also add CLI tools kaf and kcat, just give people the choices.

kafkactl looked like one of the nicer options to me, but kaf and kcat are both
already in use elsewhere at Culture Amp, so we might as well match the
technology choices.

Add missing kcat config

plugins/ca-kafka-local/README.md

@@ -10,8 +10,10 @@ What it provides:
 - Process Compose job
   - Will print information to the terminal about Kafka, once `kafka-local` is up and running.
   - Allows you to add a `depends_on` clause so other services wait for `kafka-local`.
-- CLI Tools
-  - [kafkactl](https://deviceinsight.github.io/kafkactl/) for basic kafka interactions.
+- Various Kafka CLI Tools
+  - [kafkactl](https://deviceinsight.github.io/kafkactl/). We add a configuration file for connecting to `kafka-local` out of the box.
+  - [kcat](https://github.com/edenhill/kcat). We add a configuration file for connecting to `kafka-local` out of the box.
+  - [kaf](https://github.com/birdayz/kaf). Note you will need to run `kaf config add-cluster local -b $KAFKA_BROKERS` and then `kaf config select-cluster` to configure connection to `kafka-local`.
 
 ## Usage
 

plugins/ca-kafka-local/config/kcat/kcat.conf

@@ -0,0 +1 @@
+bootstrap.servers=${KAFKA_BROKERS}

plugins/ca-kafka-local/plugin.json

@@ -3,20 +3,25 @@
   "version": "0.0.1",
   "description": "Environment variables and tools to interact with `kafka-local` in your service",
   "readme": "README.md",
-  "packages": ["kafkactl@5"],
+  "packages": ["kafkactl@5", "kcat@1", "envsubst", "kaf"],
   "env": {
     "KAFKA_BROKERS": "localhost:14231",
     "SCHEMA_REGISTRY_URL": "localhost:14228",
     "KAFKA_TOPIC_PREFIX": "local",
     "KAFKA_UI_URL": "http://localhost:12288",
-    "KAFKA_CTL_CONFIG": "{{.Virtenv}}/config/kafkactl/config.yaml"
+    "KAFKA_CTL_CONFIG": "{{.Virtenv}}/config/kafkactl/config.yaml",
+    "KCAT_CONFIG": "{{.Virtenv}}/config/kcat/kcat.conf"
   },
   "create_files": {
     "{{.Virtenv}}/bin/kafka-local-readme": "bin/kafka-local-readme",
     "{{.Virtenv}}/config/process-compose.yaml": "config/process-compose.yaml",
-    "{{.Virtenv}}/config/kafkactl/config.yaml": "config/kafkactl/config.yaml"
+    "{{.Virtenv}}/config/kafkactl/config.yaml": "config/kafkactl/config.yaml",
+    "{{.Virtenv}}/config/kcat/kcat.conf.template": "config/kcat/kcat.conf"
   },
   "shell": {
+    "init_hook": [
+      "envsubst < {{.Virtenv}}/config/kcat/kcat.conf.template > {{.Virtenv}}/config/kcat/kcat.conf"
+    ],
     "scripts": {
       "kafka-local-readme": "{{.Virtenv}}/bin/kafka-local-readme"
     }