entrypoint-aws-batch: Let NEXTSTRAIN_AWS_BATCH_VERBOSE=0 turn off set -x

Useful for upcoming Cram tests where I don't want to match all `set -x`
output.  Nicer to turn it off than to filter it out with grep.

Author: tsibley

entrypoint-aws-batch

@@ -2,7 +2,9 @@
 set -euo pipefail
 
 # Show what we're running for the benefit of the logs.
-set -x
+if [[ "${NEXTSTRAIN_AWS_BATCH_VERBOSE:=1}" != 0 ]]; then
+    set -x
+fi
 
 # Download the working dir.
 case "$NEXTSTRAIN_AWS_BATCH_WORKDIR_URL" in

tests/aws-batch-verbose.t

@@ -0,0 +1,46 @@
+#!/usr/bin/env cram
+
+Setup.
+
+  $ : "${IMAGE:=localhost:5000/nextstrain/base:latest}"
+  $ (docker image inspect "$IMAGE" || docker image pull "$IMAGE") &>/dev/null
+
+A workdir URL is required and not setting one here causes the entrypoint to
+error, but that's enough for testing verbose mode.
+
+  $ export NEXTSTRAIN_AWS_BATCH_WORKDIR_URL=
+
+Verbose mode is default.
+
+  $ docker run --rm --env=NEXTSTRAIN_AWS_BATCH_WORKDIR_URL "$IMAGE" \
+  >   /sbin/entrypoint-aws-batch true
+  + case "$NEXTSTRAIN_AWS_BATCH_WORKDIR_URL" in
+  + echo 'entrypoint-aws-batch: No handler for NEXTSTRAIN_AWS_BATCH_WORKDIR_URL <>'
+  entrypoint-aws-batch: No handler for NEXTSTRAIN_AWS_BATCH_WORKDIR_URL <>
+  + exit 1
+  [1]
+
+Verbose mode is anything not zero.
+
+  $ docker run --rm --env=NEXTSTRAIN_AWS_BATCH_{WORKDIR_URL,VERBOSE=yes} "$IMAGE" \
+  >   /sbin/entrypoint-aws-batch true
+  + case "$NEXTSTRAIN_AWS_BATCH_WORKDIR_URL" in
+  + echo 'entrypoint-aws-batch: No handler for NEXTSTRAIN_AWS_BATCH_WORKDIR_URL <>'
+  entrypoint-aws-batch: No handler for NEXTSTRAIN_AWS_BATCH_WORKDIR_URL <>
+  + exit 1
+  [1]
+
+  $ docker run --rm --env=NEXTSTRAIN_AWS_BATCH_{WORKDIR_URL,VERBOSE=} "$IMAGE" \
+  >   /sbin/entrypoint-aws-batch true
+  + case "$NEXTSTRAIN_AWS_BATCH_WORKDIR_URL" in
+  + echo 'entrypoint-aws-batch: No handler for NEXTSTRAIN_AWS_BATCH_WORKDIR_URL <>'
+  entrypoint-aws-batch: No handler for NEXTSTRAIN_AWS_BATCH_WORKDIR_URL <>
+  + exit 1
+  [1]
+
+Verbose mode can be turned off.
+
+  $ docker run --rm --env=NEXTSTRAIN_AWS_BATCH_{WORKDIR_URL,VERBOSE=0} "$IMAGE" \
+  >   /sbin/entrypoint-aws-batch true
+  entrypoint-aws-batch: No handler for NEXTSTRAIN_AWS_BATCH_WORKDIR_URL <>
+  [1]