Add olamic-wait tool for blocking until a task is complete.

1 files changed, 27 insertions, 0 deletions

diff --git a/olamic-wait b/olamic-wait
new file mode 100755
index 0000000..557c80a
--- /dev/null
+++ b/olamic-wait
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+set -eu
+
+QUEUE_DIR="$1"; shift
+
+WAIT_UUID=""
+while true; do
+    WAITING=false
+    for UUID in "$@"; do
+        if [[ -e "$QUEUE_DIR"/candidates/"$UUID" || -e "$QUEUE_DIR"/in-progress/"$UUID" ]]; then
+            WAITING=true
+            if [[ "$WAIT_UUID" != "$UUID" ]]; then
+                WAIT_UUID="$UUID"
+                echo "$(date -Iseconds) Waiting for: $UUID"
+            fi
+            break
+        else
+            echo "$(date -Iseconds) Complete: $UUID"
+            shift
+        fi
+    done
+    if ! $WAITING; then
+        break
+    fi
+    sleep 1
+done