set & exists # Since PURGE is user input, check explicitly for `true` if [ $PURGE = true ]; then if checkBucketExists $BUCKET ; then echo "Purging bucket '$BUCKET'." set +e ; # don't exit if this fails ${MC} rm -r --force myminio/$BUCKET set -e ; # reset `e` as active else echo "Bucket '$BUCKET' does not exist, skipping purge." fi fi # Create the bucket if it does not exist if ! checkBucketExists $BUCKET ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already...

set & exists # Since PURGE is user input, check explicitly for `true` if [ $PURGE = true ]; then if checkBucketExists $BUCKET ; then echo "Purging bucket '$BUCKET'." set +e ; # don't exit if this fails ${MC} rm -r --force myminio/$BUCKET set -e ; # reset `e` as active else echo "Bucket '$BUCKET' does not exist, skipping purge." fi fi # Create the bucket if it does not exist if ! checkBucketExists $BUCKET ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already...

set & exists # Since PURGE is user input, check explicitly for `true` if [ $PURGE = true ]; then if checkBucketExists $BUCKET ; then echo "Purging bucket '$BUCKET'." set +e ; # don't exit if this fails ${MC} rm -r --force myminio/$BUCKET set -e ; # reset `e` as active else echo "Bucket '$BUCKET' does not exist, skipping purge." fi fi # Create the bucket if it does not exist if ! checkBucketExists $BUCKET ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already...

set & exists # Since PURGE is user input, check explicitly for `true` if [ $PURGE = true ]; then if checkBucketExists $BUCKET ; then echo "Purging bucket '$BUCKET'." set +e ; # don't exit if this fails ${MC} rm -r --force myminio/$BUCKET set -e ; # reset `e` as active else echo "Bucket '$BUCKET' does not exist, skipping purge." fi fi # Create the bucket if it does not exist if ! checkBucketExists $BUCKET ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already...

set & exists # Since PURGE is user input, check explicitly for `true` if [ $PURGE = true ]; then if checkBucketExists $BUCKET ; then echo "Purging bucket '$BUCKET'." set +e ; # don't exit if this fails ${MC} rm -r --force myminio/$BUCKET set -e ; # reset `e` as active else echo "Bucket '$BUCKET' does not exist, skipping purge." fi fi # Create the bucket if it does not exist if ! checkBucketExists $BUCKET ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already...

 * <strong>Performance</strong>).
 *
 * <p><strong>Cycle Detection</strong>
 *
 * <p>Deadlocks can arise when locks are acquired in an order that forms a cycle. In a simple
 * example involving two locks and two threads, deadlock occurs when one thread acquires Lock A, and
 * then Lock B, while another thread acquires Lock B, and then Lock A:
 *
 * <pre>
 * Thread1: acquire(LockA) --X acquire(LockB)
 * Thread2: acquire(LockB) --X acquire(LockA)

## Import `Header` { #import-header }

First import `Header`:

{* ../../docs_src/header_params/tutorial001_an_py310.py hl[3] *}

## Declare `Header` parameters { #declare-header-parameters }

Then declare the header parameters using the same structure as with `Path`, `Query` and `Cookie`.

You can define the default value as well as all the extra validation or annotation parameters:

OBJECTLOCKING is set because it enables versioning to the Buckets created) if ! checkBucketExists $BUCKET ; then if [ ! -z $OBJECTLOCKING ] ; then if [ $OBJECTLOCKING = true ] ; then echo "Creating bucket with OBJECTLOCKING '$BUCKET'" ${MC} mb --with-lock myminio/$BUCKET elif [ $OBJECTLOCKING = false ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET fi elif [ -z $OBJECTLOCKING ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already exists."...

OBJECTLOCKING is set because it enables versioning to the Buckets created) if ! checkBucketExists $BUCKET ; then if [ ! -z $OBJECTLOCKING ] ; then if [ $OBJECTLOCKING = true ] ; then echo "Creating bucket with OBJECTLOCKING '$BUCKET'" ${MC} mb --with-lock myminio/$BUCKET elif [ $OBJECTLOCKING = false ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET fi elif [ -z $OBJECTLOCKING ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already exists."...

OBJECTLOCKING is set because it enables versioning to the Buckets created) if ! checkBucketExists $BUCKET ; then if [ ! -z $OBJECTLOCKING ] ; then if [ $OBJECTLOCKING = true ] ; then echo "Creating bucket with OBJECTLOCKING '$BUCKET'" ${MC} mb --with-lock myminio/$BUCKET elif [ $OBJECTLOCKING = false ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET fi elif [ -z $OBJECTLOCKING ] ; then echo "Creating bucket '$BUCKET'" ${MC} mb myminio/$BUCKET else echo "Bucket '$BUCKET' already exists."...