Files
seaweedfs/weed/util
Chris LuandGitHub 16ba8af0b7 util/http: lazily init the global HTTP client to fix admin metrics nil panic (#10044)
util/http: lazily init the global HTTP client

GetGlobalHttpClient returned a nil client until InitGlobalHttpClient ran,
which only happens in weed.go's main. Anything that starts a command
in-process bypasses that: the admin server's metrics goroutine seeds a
dashboard sample on startup, reaching fetchPublicUrlMap -> GetGlobalHttpClient().Do,
and nil-derefs the receiver in GetHttpScheme.

Init the client on first Get via sync.Once so it is never nil regardless of
the startup path. InitGlobalHttpClient keeps its eager-init role through the
same Once.
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