Support external sourcemaps bigger, than 1Mb

[le0pard]

Self hosted sentry limited in sourcemap external size, which can fetch and cache to 1Mb.

Remote file too large for caching

This is because memcached the maximum size of a value you can store in is 1 megabyte by default. But this can be fixed by -I param.

This PR allow to fetch and cache external sourcemaps for sentry up to 25Mb.

Legal Boilerplate

Look, I get it. The entity doing business as "Sentry" was incorporated in the State of Delaware in 2015 as Functional Software, Inc. and is gonna need some rights from me in order to utilize my contributions in this here PR. So here's the deal: I retain all rights, title and interest in and to my contributions, and by keeping this boilerplate intact I confirm that Sentry can use, modify, copy, and redistribute my contributions, under Sentry's choice of terms.

[BYK]

Since this value needs to be in sync with the other value, I feel like this should be in a shared env variable and here we should parse out that value. Something like:

SENTRY_MAX_EXTERNAL_SOURCEMAP_SIZE="25M"

and then in this file

UNIT_SIZES={
  "K": 1024,
  "M": 1024**2,
  "G": 1024**3,
}
def unit_text_to_bytes(text):
  multiplier = UNIT_SIZES[text[-1]]
  return float(text[:-1])*multiplier

...

"OPTIONS": {
  "server_max_value_length": unit_text_to_bytes(env("SENTRY_MAX_EXTERNAL_SOURCEMAP_SIZE", "1M")),

[le0pard]

@BYK changed in 6117ec8

[BYK]

Rejecting for the environment docker compose config placement

[BYK]

Nice work!