You are implementing Task A10: parameterize the `drop_audit` filter's hardcoded VRL condition into a composed `audit_drop_condition` string passed via `templatefile()`.

## What's already in place

- Working directory: `/Users/steve.briggs/projects/IAC/terraform/internal-modules/kubernetes/monitoring/vector`
- `templates/values.yaml.tpl` currently has the `drop_audit` filter with hardcoded condition:

  ```yaml
        condition: |
          msg = if is_string(.message) { string!(.message) } else { "" }
          !match(msg, r'Audit\s-\s.+') && !match(msg, r'"level":"audit"')
  ```

- `variables.tf` declares `audit_drop_patterns` (list of strings, default has the two literal patterns).
- `main.tf` does NOT yet exist — the `templatefile()` call hasn't been written yet. That's Task A12.

## Goal of A10

Replace the hardcoded condition body with a single template variable `${audit_drop_condition}` that callers compose from the patterns list. The composition logic is:

```hcl
local.audit_drop_condition = length(var.audit_drop_patterns) == 0 ? "true" : join(
  " && ",
  [for p in var.audit_drop_patterns : "!match(msg, r'${p}')"],
)
```

For an empty list, the condition is simply `true` (no patterns dropped). For 1+ patterns, it's a joined `!match(...)` chain.

Note: `main.tf` doesn't exist yet — Task A12 will introduce it and own this `local.audit_drop_condition` derivation. **For A10, ONLY change the template** to consume `${audit_drop_condition}`. The Terraform-side composition will be wired in A12.

## Implementation steps

- [ ] **Step 1: Edit `templates/values.yaml.tpl`** — replace the `condition: |` block of `drop_audit` with:

   ```yaml
         condition: |
           msg = if is_string(.message) { string!(.message) } else { "" }
           ${audit_drop_condition}
   ```

   The two-space-prefixed `${audit_drop_condition}` must be at the right indent level for the YAML literal-block scalar (`|`). The literal block consumes the indentation of the most-indented line as the YAML "indent" — keep the `${audit_drop_condition}` at the same column as the `msg =` line so its substitution lands cleanly within the condition body.

- [ ] **Step 2: Run `terraform fmt -check -recursive`.** Exit 0 expected.

- [ ] **Step 3: Verify via ad-hoc render.** Use the same tempdir snippet pattern as A9, but pass `audit_drop_condition` as a string to `templatefile()`. Two cases to check:

   **Case A (two patterns):**
   ```bash
   TMP=$(mktemp -d) && cd "$TMP"
   cat > main.tf <<EOF
   locals {
     patterns = ["Audit\\\\s-\\\\s.+", "\\\"level\\\":\\\"audit\\\""]
     audit_drop_condition = join(
       " && ",
       [for p in local.patterns : "!match(msg, r'\${p}')"],
     )
   }
   output "rendered" {
     value = templatefile("/Users/steve.briggs/projects/IAC/terraform/internal-modules/kubernetes/monitoring/vector/templates/values.yaml.tpl", {
       replicas                    = 3
       requests_cpu                = "200m"
       requests_memory             = "256Mi"
       limits_cpu                  = "2"
       limits_memory               = "1Gi"
       datadog_site                = "datadoghq.com"
       email_redaction_enabled     = true
       email_redaction_replacement = "[REDACTED-EMAIL]"
       audit_drop_condition        = local.audit_drop_condition
     })
   }
   EOF
   terraform init -backend=false >/dev/null && terraform apply -auto-approve >/dev/null && terraform output -raw rendered | grep -A 1 "msg = if"
   cd / && rm -rf "$TMP"
   ```

   The shell heredoc escaping for embedded `$` and `\` is tricky — be careful. Confirm the rendered `condition: |` block contains:

   ```
   msg = if is_string(.message) { string!(.message) } else { "" }
   !match(msg, r'Audit\s-\s.+') && !match(msg, r'"level":"audit"')
   ```

   Equivalent to the previous hardcoded form.

   **Case B (three patterns):** Same as A but with `local.patterns = ["Audit\\\\s-\\\\s.+", "\\\"level\\\":\\\"audit\\\"", "pattern_three"]`. The rendered condition should now be a three-clause `&&` chain:

   ```
   !match(msg, r'Audit\s-\s.+') && !match(msg, r'"level":"audit"') && !match(msg, r'pattern_three')
   ```

   If the heredoc escaping is too painful to debug, instead just write a small `verify.tf` directly inside a tempdir, no shell heredoc, and run it. Whatever works.

- [ ] **Step 4: Re-run all four VRL tests** to confirm no regression. The VRL test programs use the hardcoded patterns directly (they don't go through the template), so they should still pass:

   ```bash
   ./tests/vrl/drop_audit/run.sh
   ./tests/vrl/redact_emails_logs/run.sh
   ./tests/vrl/redact_emails_traces/run.sh
   ./tests/vrl/redact_emails_metrics/run.sh
   ```

## Constraints

- **DO NOT run any git commands.**
- **DO NOT** push, tag, open MRs.
- **DO NOT** run `terraform apply` against any non-tempdir state. Clean up tempdirs.
- **DO NOT** create snapshot-test infrastructure (`tests/snapshots/`, snapshot runners — OFF the table).
- **DO NOT** create `main.tf` yet — that's Task A12.

## Spec / plan references

- Spec: `/Users/steve.briggs/projects/IAC/docs/superpowers/specs/2026-05-05-vector-redaction-design.md`
- Plan: `/Users/steve.briggs/projects/IAC/docs/superpowers/plans/2026-05-05-vector-redaction-pipeline.md` Task A10

## Report Format

- **Status:** DONE | DONE_WITH_CONCERNS | BLOCKED | NEEDS_CONTEXT
- Template line modified (the condition body)
- `terraform fmt` result
- Two ad-hoc render results (Case A: two patterns; Case B: three patterns)
- VRL tests re-run result
- Self-review findings


I'll start by reading the relevant files to understand the current state.


1	role: Aggregator
2	replicas: ${replicas}
3	podAnnotations:
4	  reloader.stakater.com/auto: "true"
5	service:
6	  enabled: true
7	  type: ClusterIP
8	  ports:
9	    - name: otlp-grpc
10	      port: 4317
11	      protocol: TCP
12	    - name: otlp-http
13	      port: 4318
14	      protocol: TCP
15	env:
16	  - name: DATADOG_API_KEY
17	    valueFrom:
18	      secretKeyRef:
19	        name: vector-datadog
20	        key: api_key
21	resources:
22	  requests:
23	    cpu: ${requests_cpu}
24	    memory: ${requests_memory}
25	  limits:
26	    cpu: "${limits_cpu}"
27	    memory: ${limits_memory}
28	customConfig:
29	  data_dir: /vector-data-dir
30	  api:
31	    enabled: true
32	    address: 127.0.0.1:8686
33	  sources:
34	    otlp_in:
35	      type: opentelemetry
36	      grpc:
37	        address: 0.0.0.0:4317
38	      http:
39	        address: 0.0.0.0:4318
40	  transforms:
41	    drop_audit:
42	      type: filter
43	      inputs:
44	        - otlp_in.logs
45	      condition: |
46	        msg = if is_string(.message) { string!(.message) } else { "" }
47	        !match(msg, r'Audit\s-\s.+') && !match(msg, r'"level":"audit"')
48	%{ if email_redaction_enabled ~}
49	    redact_emails_logs:
50	      type: remap
51	      inputs:
52	        - drop_audit
53	      source: |
54	        email_re = r'[\w._%+\-]+@[\w.-]+\.[A-Za-z]{2,}'
55	        if is_string(.message) {
56	          .message = replace(string!(.message), email_re, "${email_redaction_replacement}")
57	        }
58	        if is_object(.attributes) {
59	          attrs, _err = object(.attributes)
60	          if is_object(attrs) {
61	            .attributes = map_values(object!(attrs)) -> |v| {
62	              if is_string(v) { replace(string!(v), email_re, "${email_redaction_replacement}") } else { v }
63	            }
64	          }
65	        }
66	    redact_emails_traces:
67	      type: remap
68	      inputs:
69	        - otlp_in.traces
70	      source: |
71	        email_re = r'[\w._%+\-]+@[\w.-]+\.[A-Za-z]{2,}'
72	        if is_object(.attributes) {
73	          attrs, _err = object(.attributes)
74	          if is_object(attrs) {
75	            .attributes = map_values(object!(attrs)) -> |v| {
76	              if is_string(v) { replace(string!(v), email_re, "${email_redaction_replacement}") } else { v }
77	            }
78	          }
79	        }
80	        if is_object(.resource) {
81	          res, _err = object(.resource)
82	          if is_object(res) && is_object(res.attributes) {
83	            rattrs, _err2 = object(res.attributes)
84	            if is_object(rattrs) {
85	              .resource.attributes = map_values(object!(rattrs)) -> |v| {
86	                if is_string(v) { replace(string!(v), email_re, "${email_redaction_replacement}") } else { v }
87	              }
88	            }
89	          }
90	        }
91	    redact_emails_metrics:
92	      type: remap
93	      inputs:
94	        - otlp_in.metrics
95	      source: |
96	        email_re = r'[\w._%+\-]+@[\w.-]+\.[A-Za-z]{2,}'
97	        if is_object(.attributes) {
98	          attrs, _err = object(.attributes)
99	          if is_object(attrs) {
100	            .attributes = map_values(object!(attrs)) -> |v| {
101	              if is_string(v) { replace(string!(v), email_re, "${email_redaction_replacement}") } else { v }
102	            }
103	          }
104	        }
105	        if is_object(.resource) {
106	          res, _err = object(.resource)
107	          if is_object(res) && is_object(res.attributes) {
108	            rattrs, _err2 = object(res.attributes)
109	            if is_object(rattrs) {
110	              .resource.attributes = map_values(object!(rattrs)) -> |v| {
111	                if is_string(v) { replace(string!(v), email_re, "${email_redaction_replacement}") } else { v }
112	              }
113	            }
114	          }
115	        }
116	%{ endif ~}
117	  sinks:
118	    datadog_logs:
119	      type: datadog_logs
120	      inputs:
121	        - ${email_redaction_enabled ? "redact_emails_logs" : "drop_audit"}
122	      default_api_key: $${DATADOG_API_KEY}
123	      site: ${datadog_site}
124	    datadog_traces:
125	      type: datadog_traces
126	      inputs:
127	        - ${email_redaction_enabled ? "redact_emails_traces" : "otlp_in.traces"}
128	      default_api_key: $${DATADOG_API_KEY}
129	      site: ${datadog_site}
130	    datadog_metrics:
131	      type: datadog_metrics
132	      inputs:
133	        - ${email_redaction_enabled ? "redact_emails_metrics" : "otlp_in.metrics"}
134	      default_api_key: $${DATADOG_API_KEY}
135	      site: ${datadog_site}
136


Good. Now let me look at the VRL test scripts and variables.tf to understand the full picture.


Bash

List VRL test directories


1	# ---------------------------------------------------------------------------------------------------------------------
2	# REQUIRED PARAMETERS
3	# These variables must be set.
4	# ---------------------------------------------------------------------------------------------------------------------
5
6	variable "chart_version" {
7	  description = "Vector helm chart version pin"
8	  type        = string
9	}
10
11	variable "image_tag_version" {
12	  description = "Vector image tag"
13	  type        = string
14	}
15
16	variable "datadog_site" {
17	  description = "Datadog site (e.g. datadoghq.com, us3.datadoghq.com)"
18	  type        = string
19	}
20
21	variable "datadog_api_key_vault_path" {
22	  description = "Vault path for the Datadog API key, consumed by ExternalSecret"
23	  type        = string
24	}
25
26	variable "external_secrets_cluster_store_name" {
27	  description = "Name of the ClusterSecretStore created by external-secrets module"
28	  type        = string
29	}
30
31	# ---------------------------------------------------------------------------------------------------------------------
32	# OPTIONAL PARAMETERS
33	# These variables are configurable, but have reasonable defaults set.
34	# ---------------------------------------------------------------------------------------------------------------------
35
36	variable "image" {
37	  description = "Vector image source"
38	  type        = string
39	  default     = "registry.ic-ops.net/cache-docker-hub/timberio/vector"
40	}
41
42	variable "replicas" {
43	  description = "Number of Vector aggregator replicas"
44	  type        = number
45	  default     = 3
46	}
47
48	variable "audit_drop_patterns" {
49	  description = "Regex patterns; matching log message bodies are dropped"
50	  type        = list(string)
51	  default = [
52	    "Audit\\s-\\s.+",
53	    "\"level\":\"audit\"",
54	  ]
55	}
56
57	variable "email_redaction_enabled" {
58	  description = "Toggle the email-redact VRL transform across all signals"
59	  type        = bool
60	  default     = true
61	}
62
63	variable "email_redaction_replacement" {
64	  description = "String that replaces matched email addresses"
65	  type        = string
66	  default     = "[REDACTED-EMAIL]"
67	}
68
69	variable "additional_config" {
70	  description = "Escape hatch — overwrites helm customConfig wholesale (mirrors otel_collector_additional_config semantics)"
71	  type        = any
72	  default     = null
73	}
74
75	variable "resources_requests" {
76	  description = "Pod resource requests"
77	  type        = map(string)
78	  default = {
79	    cpu    = "200m"
80	    memory = "256Mi"
81	  }
82	}
83
84	variable "resources_limits" {
85	  description = "Pod resource limits"
86	  type        = map(string)
87	  default = {
88	    cpu    = "2"
89	    memory = "1Gi"
90	  }
91	}
92
93	variable "namespace" {
94	  description = "Kubernetes namespace for Vector"
95	  type        = string
96	  default     = "vector"
97	}
98
99	variable "service_monitor_enabled" {
100	  description = "Create a ServiceMonitor for Vector self-metrics. Requires kube-prometheus-stack CRDs in cluster."
101	  type        = bool
102	  default     = false
103	}
104


drwxr-xr-x steve.briggs staff 128 B Tue May  5 12:52:54 2026 ..
drwxr-xr-x steve.briggs staff 224 B Tue May  5 12:59:12 2026 drop_audit
drwxr-xr-x steve.briggs staff 224 B Tue May  5 13:08:23 2026 redact_emails_logs
drwxr-xr-x steve.briggs staff 224 B Tue May  5 13:17:11 2026 redact_emails_traces
drwxr-xr-x steve.briggs staff 192 B Tue May  5 13:19:05 2026 .
drwxr-xr-x steve.briggs staff 224 B Tue May  5 13:22:13 2026 redact_emails_metrics


Good. Now let me do Step 1 — edit the template.


Edit

      condition: |
        msg = if is_string(.message) { string!(.message) } else { "" }
        !match(msg, r'Audit\s-\s.+') && !match(msg, r'"level":"audit"')

      condition: |
        msg = if is_string(.message) { string!(.message) } else { "" }
        ${audit_drop_condition}


The file /Users/steve.briggs/projects/IAC/terraform/internal-modules/kubernetes/monitoring/vector/templates/values.yaml.tpl has been updated successfully. (file state is current in your context — no need to Read it back)


Step 2 — run `terraform fmt -check -recursive`.


Bash

terraform fmt -check -recursive /Users/steve.briggs/projects/IAC/terraform/internal-modules/kubernetes/monitoring/vector/

Check Terraform formatting recursively


(Bash completed with no output)


Exit 0. Now Step 3 — ad-hoc renders. I'll write the verify.tf files directly to avoid heredoc escaping pain.


TMPDIR_A=$(mktemp -d) && echo "$TMPDIR_A"

Create temp directory for Case A


Write

locals {
  patterns = ["Audit\\s-\\s.+", "\"level\":\"audit\""]
  audit_drop_condition = join(
    " && ",
    [for p in local.patterns : "!match(msg, r'${p}')"],
  )
}

output "rendered" {
  value = templatefile("/Users/steve.briggs/projects/IAC/terraform/internal-modules/kubernetes/monitoring/vector/templates/values.yaml.tpl", {
    replicas                    = 3
    requests_cpu                = "200m"
    requests_memory             = "256Mi"
    limits_cpu                  = "2"
    limits_memory               = "1Gi"
    datadog_site                = "datadoghq.com"
    email_redaction_enabled     = true
    email_redaction_replacement = "[REDACTED-EMAIL]"
    audit_drop_condition        = local.audit_drop_condition
  })
}


File created successfully at: /var/folders/f_/krc48r2d0c9_vwzbl5lk9qcm0000gp/T/tmp.vejeRjqc6X/main.tf (file state is current in your context — no need to Read it back)


Bash

cd /var/folders/f_/krc48r2d0c9_vwzbl5lk9qcm0000gp/T/tmp.vejeRjqc6X && terraform init -backend=false 2>&1 | tail -3 && terraform apply -auto-approve 2>&1 | tail -5

Init and apply Case A temp Terraform config


If you ever set or change modules or backend configuration for Terraform,
rerun this command to reinitialize your working directory. If you forget, other
commands will detect it and remind you to do so if necessary.
        - redact_emails_metrics
      default_api_key: ${DATADOG_API_KEY}
      site: datadoghq.com

EOT


cd /var/folders/f_/krc48r2d0c9_vwzbl5lk9qcm0000gp/T/tmp.vejeRjqc6X && terraform output -raw rendered | grep -A 2 "msg = if"

Extract condition block from Case A render


        msg = if is_string(.message) { string!(.message) } else { "" }
        !match(msg, r'Audit\s-\s.+') && !match(msg, r'"level":"audit"')
    redact_emails_logs:


Case A renders correctly — identical to the original hardcoded form. Now Case B with three patterns.


TMPDIR_B=$(mktemp -d) && echo "$TMPDIR_B"

Create temp directory for Case B


Write

locals {
  patterns = ["Audit\\s-\\s.+", "\"level\":\"audit\"", "pattern_three"]
  audit_drop_condition = join(
    " && ",
    [for p in local.patterns : "!match(msg, r'${p}')"],
  )
}

output "rendered" {
  value = templatefile("/Users/steve.briggs/projects/IAC/terraform/internal-modules/kubernetes/monitoring/vector/templates/values.yaml.tpl", {
    replicas                    = 3
    requests_cpu                = "200m"
    requests_memory             = "256Mi"
    limits_cpu                  = "2"
    limits_memory               = "1Gi"
    datadog_site                = "datadoghq.com"
    email_redaction_enabled     = true
    email_redaction_replacement = "[REDACTED-EMAIL]"
    audit_drop_condition        = local.audit_drop_condition
  })
}


File created successfully at: /var/folders/f_/krc48r2d0c9_vwzbl5lk9qcm0000gp/T/tmp.uwS5pZsi1K/main.tf (file state is current in your context — no need to Read it back)


Bash

cd /var/folders/f_/krc48r2d0c9_vwzbl5lk9qcm0000gp/T/tmp.uwS5pZsi1K && terraform init -backend=false 2>&1 | tail -2 && terraform apply -auto-approve 2>&1 | tail -3 && terraform output -raw rendered | grep -A 2 "msg = if"

Init, apply, and extract condition block for Case B


rerun this command to reinitialize your working directory. If you forget, other
commands will detect it and remind you to do so if necessary.
      site: datadoghq.com

EOT
        msg = if is_string(.message) { string!(.message) } else { "" }
        !match(msg, r'Audit\s-\s.+') && !match(msg, r'"level":"audit"') && !match(msg, r'pattern_three')
    redact_emails_logs:


Case B renders correctly with the three-clause chain. Now clean up the tempdirs and run the VRL tests.


Clean up temp directories


/Users/steve.briggs/projects/IAC/terraform/internal-modules/kubernetes/monitoring/vector/tests/vrl/drop_audit/run.sh && echo "drop_audit: PASS"

Run drop_audit VRL tests


2026-05-05T17:34:11.886796Z  INFO vector::app: Log level is enabled. level="info"
drop_audit VRL OK
drop_audit: PASS


/Users/steve.briggs/projects/IAC/terraform/internal-modules/kubernetes/monitoring/vector/tests/vrl/redact_emails_logs/run.sh && echo "redact_emails_logs: PASS"
/Users/steve.briggs/projects/IAC/terraform/internal-modules/kubernetes/monitoring/vector/tests/vrl/redact_emails_traces/run.sh && echo "redact_emails_traces: PASS"
/Users/steve.briggs/projects/IAC/terraform/internal-modules/kubernetes/monitoring/vector/tests/vrl/redact_emails_metrics/run.sh && echo "redact_emails_metrics: PASS"

Run remaining three VRL test suites


2026-05-05T17:34:20.586190Z  INFO vector::app: Log level is enabled. level="info"
redact_emails_logs VRL OK
redact_emails_logs: PASS
2026-05-05T17:34:20.783340Z  INFO vector::app: Log level is enabled. level="info"
redact_emails_traces VRL OK
redact_emails_traces: PASS
2026-05-05T17:34:20.991666Z  INFO vector::app: Log level is enabled. level="info"
redact_emails_metrics VRL OK
redact_emails_metrics: PASS


All four VRL tests pass. Here's the full report.

---

**Status:** DONE

**Template line modified**
`/Users/steve.briggs/projects/IAC/terraform/internal-modules/kubernetes/monitoring/vector/templates/values.yaml.tpl` lines 45-47. The hardcoded two-pattern condition body was replaced with:
```yaml
      condition: |
        msg = if is_string(.message) { string!(.message) } else { "" }
        ${audit_drop_condition}
```
The `${audit_drop_condition}` placeholder sits at the same column as the `msg =` line, preserving the YAML literal-block scalar indent.

**`terraform fmt -check -recursive` result**
Exit 0, no output — nothing to reformat.

**Case A render (two patterns)**
```
msg = if is_string(.message) { string!(.message) } else { "" }
!match(msg, r'Audit\s-\s.+') && !match(msg, r'"level":"audit"')
```
Identical to the previous hardcoded form.

**Case B render (three patterns)**
```
msg = if is_string(.message) { string!(.message) } else { "" }
!match(msg, r'Audit\s-\s.+') && !match(msg, r'"level":"audit"') && !match(msg, r'pattern_three')
```
Three-clause `&&` chain rendered correctly.

**VRL tests re-run result**
All four pass: `drop_audit`, `redact_emails_logs`, `redact_emails_traces`, `redact_emails_metrics`.

**Self-review findings**
No regressions. The VRL tests use hardcoded patterns directly and are unaffected by the template change. The `${audit_drop_condition}` substitution slot is clean — no surrounding quotes or escaping needed since the value is a raw VRL expression substituted inline into the literal-block scalar. Task A12 will own the `local.audit_drop_condition` derivation in `main.tf`.