Script to download a file from GCS bucket

download_artifact.sh

#!/bin/bash
# Download artifact from GCS bucket

set -e

echo -e "====> Run \`gcloud auth print-access-token\` on a system where you've setup gcloud to get access token\n"
read -r -p "Enter access token: " StorageAccessToken
read -r -p "Enter GCS artifact URL: " ArtifactURL

if [[ "${ArtifactURL:0:33}" == "https://console.cloud.google.com/" ]]; then
    BucketAndFile="${ArtifactURL#*https://console.cloud.google.com/storage/browser/_details/}"
elif [[ "${ArtifactURL:0:33}" == "https://storage.cloud.google.com/" ]]; then
    BucketAndFile="${ArtifactURL#*https://storage.cloud.google.com/}"
elif [[ "${ArtifactURL:0:5}" == "gs://" ]]; then
    BucketAndFile="${ArtifactURL#*gs://}"
else
    echo "Invalid GCS artifact URL"
    exit 1
fi

StorageBucket="${BucketAndFile%%/*}"
StorageFile="${BucketAndFile#*/}"
StorageFileEscaped=$(echo "${StorageFile}" | sed 's/\//%2F/g')
OutputFileName="${StorageFile##*/}"

echo -e "\n====> Downloading gs://${StorageBucket}/${StorageFile} to ${OutputFileName}\n"

wget -O "${OutputFileName}" --header="Authorization: Bearer ${StorageAccessToken}" \
    "https://storage.googleapis.com/storage/v1/b/${StorageBucket}/o/${StorageFileEscaped}?alt=media"

Can we have StorageAccessToken=$(gcloud auth print-access-token)

@9mgupta2 The whole point of this is to download when gcloud is not installed and/or auth is not configured on the target system.

If gcloud is installed and authenticated, you can just do gcloud storage cp gs://$StorageBucket/$StorageFile ./