test-rgw-object-tags-lua.md

• start ceph cluster with an RGW using vstart:

MON=1 OSD=1 MDS=0 MGR=1 RGW=1 ../src/vstart.sh -d -n

• use the following lua script postrequest.lua:

RGWDebugLog("Post Request Request.RGWOp = " .. Request.RGWOp)

RGWDebugLog("number of http metadata entries is: " .. #Request.HTTP.Metadata)
for k, v in pairs(Request.HTTP.Metadata) do
  RGWDebugLog("key=" .. k .. ", " .. "value=" .. v)
end

RGWDebugLog("number of tags is: " .. #Request.Tags)
for k, v in pairs(Request.Tags) do
  RGWDebugLog("key=" .. k .. ", " .. "value=" .. v)
end

if Request.Object then
  RGWDebugLog("number of object metadata entries is: " .. #Request.Object.Metadata)
  for k, v in pairs(Request.Object.Metadata) do
    RGWDebugLog("key=" .. k .. ", " .. "value=" .. v)
  end

  RGWDebugLog("number of object tags is: " .. #Request.Object.Tags)
  for k, v in pairs(Request.Object.Tags) do
    RGWDebugLog("key=" .. k .. ", " .. "value=" .. v)
  end
end

• upload to postrequest context:

bin/radosgw-admin script put --infile postrequest.lua --context postrequest

• create a bucket using the AWS CLI:

aws --endpoint-url http://localhost:8000 s3 mb s3://fish

• create a random file:

head -c 12K /dev/urandom > sample.txt

• upload the file to the bucket with custom metadata

aws --endpoint-url http://localhost:8000 s3 cp sample.txt s3://fish --metadata '{"hello": "world"}'

• add tags to the file:

aws --endpoint-url http://localhost:8000 s3api put-object-tagging --bucket=fish --key='sample.txt' --tagging='{"TagSet": [{"Key": "hello", "Value": "world"}]}'

• get the file back:

aws --endpoint-url http://localhost:8000 s3 cp s3://fish/sample.txt .

• verify the metadata tags are printed to the log