Ignore cache if Nextclade or dataset version is different

Currently checks Nextclade and dataset versions of the first row of the
nextclade.tsv file and formats them as the propose JSON. Once the
version JSON file is in place, it should be easy to swap out the check
for the new file.

bin/fetch-cache-version

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+s3_url="${1:?An S3 URL is required as the first argument}"
+
+
+trap '' SIGPIPE
+
+(aws s3 cp "${s3_url}" - \
+    | zstd -T0 -dcq \
+    | head -n 2 \
+    | tsv-select -H -f 'nextclade_version,dataset_version' \
+    | tail -n 1 \
+    | jq --raw-input -c '
+        split("\t")
+        | { "nextclade_version": .[0], "nextclade_dataset_version": .[1] }') \
+     2> /dev/null

bin/use-nextclade-cache

@@ -1,19 +1,40 @@
 #!/bin/bash
 set -euo pipefail
 
-vendored="$(dirname "$0")"/../vendored
+bin="$(dirname "$0")"
+vendored="$bin"/../vendored
 
 main() {
     s3_dst="${1:?A destination s3:// URL where the renew file is hosted is required as the first argument.}"
     s3_src="${2:?A source s3:// URL where the fallback renew file is hosted is required as the second argument.}"
+    nextclade="${3:?A path to the Nextclade executable is required as the third argument}"
+    nextclade_dataset="${4:?A path to a Nextclade dataset ZIP archive is required as the fourth argument}"
     # Nextclade dataset reference wildcard
-    reference="${3:-}"
+    reference="${5:-}"
+
     if renew-flag-exists; then
         echo "[INFO] Found renew flag" >&2
         echo "false"
         exit 0
     fi
 
+    cache_versions="$(get-cache-version-info)"
+    cache_nextclade_version="$(echo "$cache_versions" | jq -r .nextclade_version)"
+    current_nextclade_version="$("$nextclade" --version)"
+    if [[ "$cache_nextclade_version" != "$current_nextclade_version" ]]; then
+        echo "[INFO] Current Nextclade version (${current_nextclade_version}) is different from cache version (${cache_nextclade_version})" >&2
+        echo "false"
+        exit 0
+    fi
+
+    cache_dataset_version="$(echo "$cache_versions" | jq -r .nextclade_dataset_version)"
+    current_dataset_version="$(unzip -p ${nextclade_dataset} pathogen.json | jq -r '.version.tag')"
+    if [[ "$cache_dataset_version" != "$current_dataset_version" ]]; then
+        echo "[INFO] Current Nextclade dataset version (${current_dataset_version}) is different from cache version (${cache_dataset_version})" >&2
+        echo "false"
+        exit 0
+    fi
+
     echo "true"
 }
 
@@ -25,4 +46,14 @@ renew-flag-exists() {
     "$vendored"/s3-object-exists "${dst_renew_file}" || "$vendored"/s3-object-exists "${src_renew_file}"
 }
 
+get-cache-version-info() {
+    # TODO: Update check a separate file for version info
+    # Currently just checks the first row of the nextclade.tsv file
+    local version_file="nextclade${reference}.tsv.zst"
+    local dst_version_file="${s3_dst}/${version_file}"
+    local src_version_file="${s3_src}/${version_file}"
+
+    "$bin"/fetch-cache-version "$dst_version_file" || "$bin"/cache-version "$src_version_file"
+}
+
 main "$@"

workflow/snakemake_rules/nextclade.smk

@@ -62,7 +62,22 @@ if config.get("s3_dst") and config.get("s3_src"):
     ruleorder: download_nextclade_tsv_from_s3 > create_empty_nextclade_info
     ruleorder: download_previous_alignment_from_s3 > create_empty_nextclade_aligned
 
+    def _convert_dataset_name(wildcards):
+        if wildcards.reference == '':
+            dataset_name="sars-cov-2"
+        elif wildcards.reference == '_21L':
+            dataset_name="sars-cov-2-21L"
+        else:
+            # We shouldn't run into this since we have wildcard_constraints,
+            # but doesn't hurt to include it in case that changes
+            raise ValueError(f"Cannot convert unsupported reference {wildcards.reference!r} to Nextclade dataset name")
+
+        return f"data/nextclade_data/{dataset_name}.zip",
+
     rule use_nextclade_cache:
+        input:
+            nextclade="./nextclade",
+            nextclade_dataset=_convert_dataset_name,
         params:
             dst_source=config["s3_dst"],
             src_source=config["s3_src"],
@@ -73,6 +88,8 @@ if config.get("s3_dst") and config.get("s3_src"):
             ./bin/use-nextclade-cache \
                 {params.dst_source:q} \
                 {params.src_source:q} \
+                {input.nextclade:q} \
+                {input.nextclade_dataset:q} \
                 {wildcards.reference:q} \
                 > {output.use_nextclade_cache}
             """