This PR replaces Geth's logger package (a fork of [log15](https://github.com/inconshreveable/log15)) with an implementation using slog, a logging library included as part of the Go standard library as of Go1.21.
Main changes are as follows:
* removes any log handlers that were unused in the Geth codebase.
* Json, logfmt, and terminal formatters are now slog handlers.
* Verbosity level constants are changed to match slog constant values. Internal translation is done to make this opaque to the user and backwards compatible with existing `--verbosity` and `--vmodule` options.
* `--log.backtraceat` and `--log.debug` are removed.
The external-facing API is largely the same as the existing Geth logger. Logger method signatures remain unchanged.
A small semantic difference is that a `Handler` can only be set once per `Logger` and not changed dynamically. This just means that a new logger must be instantiated every time the handler of the root logger is changed.
----
For users of the `go-ethereum/log` module. If you were using this module for your own project, you will need to change the initialization. If you previously did
```golang
log.Root().SetHandler(log.LvlFilterHandler(log.LvlInfo, log.StreamHandler(os.Stderr, log.TerminalFormat(true))))
```
You now instead need to do
```golang
log.SetDefault(log.NewLogger(log.NewTerminalHandlerWithLevel(os.Stderr, log.LevelInfo, true)))
```
See more about reasoning here: https://github.com/ethereum/go-ethereum/issues/28558#issuecomment-1820606613
* cmd, les, tests: remove light client code
This commit removes the light client (LES) code.
Since the merge the light client has been broken and
it is hard to maintain it alongside the normal client.
We decided it would be best to remove it for now and
maybe rework and reintroduce it in the future.
* cmd, eth: remove some more mentions of light mode
* cmd: re-add flags and mark as deprecated
* cmd: warn the user about deprecated flags
* eth: better error message
This simplifies the code that initializes the discovery a bit, and
adds new flags for enabling/disabling discv4 and discv5 separately.
---------
Co-authored-by: Felix Lange <fjl@twurst.com>
The clean trie cache is persisted periodically, therefore Geth can
quickly warmup the cache in next restart.
However it will reduce the robustness of system. The assumption is
held in Geth that if the parent trie node is present, then the entire
sub-trie associated with the parent are all prensent.
Imagine the scenario that Geth rewinds itself to a past block and
restart, but Geth finds the root node of "future state" in clean
cache then regard this state is present in disk, while is not in fact.
Another example is offline pruning tool. Whenever an offline pruning
is performed, the clean cache file has to be removed to aviod hitting
the root node of "deleted states" in clean cache.
All in all, compare with the minor performance gain, system robustness
is something we care more.
This change updates our urfave/cli dependency to the v2 branch of the library.
There are some Go API changes in cli v2:
- Flag values can now be accessed using the methods ctx.Bool,
ctx.Int, ctx.String, ... regardless of whether the flag is 'local' or
'global'.
- v2 has built-in support for flag categories. Our home-grown category
system is removed and the categories of flags are assigned as part of
the flag definition.
For users, there is only one observable difference with cli v2: flags must now
strictly appear before regular arguments. For example, the following command is
now invalid:
geth account import mykey.json --password file.txt
Instead, the command must be invoked as follows:
geth account import --password file.txt mykey.json
* remove rpc flags
* remove legacy rpc flags
* remove legacy rpc flags
* remove legacy rpc commands
* (hopefully) fix most of the build errors
* fix build errors
https://app.travis-ci.com/github/ethereum/go-ethereum/jobs/530318686
* cmd/utils: fix syntax error
* empty commit to unbreak travis ci
* fix syntax error
* syntax fixes
* syntax fixes
* fix
fixes "cmd/geth/usage.go:234:7: expected '(', found init (typecheck)"
* fix
* various fixes in usage.go
* various fixes in flags.go
* adds extra space
reverts the spacing to how it was before I resolved the merge conflict
* more fixes in usage.go
* fix
fix for cmd/geth/usage.go:243:17: expected operand, found ':=' (typecheck) in travis
* Update cmd/utils/flags.go
Co-authored-by: Martin Holst Swende <martin@swende.se>
* fix error
fixes these errors:
cmd/utils/flags_legacy.go:21:2: "strings" imported but not used (typecheck)
"strings"
^
cmd/utils/flags_legacy.go:24:2: "github.com/ethereum/go-ethereum/node" imported but not used (typecheck)
"github.com/ethereum/go-ethereum/node"
^
* goimports
Co-authored-by: Martin Holst Swende <martin@swende.se>
This moves the eth config definition into a separate package, eth/ethconfig.
Packages eth and les can now import this common package instead of
importing eth from les, reducing dependencies.
Co-authored-by: Felix Lange <fjl@twurst.com>
This PR significantly changes the APIs for instantiating Ethereum nodes in
a Go program. The new APIs are not backwards-compatible, but we feel that
this is made up for by the much simpler way of registering services on
node.Node. You can find more information and rationale in the design
document: https://gist.github.com/renaynay/5bec2de19fde66f4d04c535fd24f0775.
There is also a new feature in Node's Go API: it is now possible to
register arbitrary handlers on the user-facing HTTP server. In geth, this
facility is used to enable GraphQL.
There is a single minor change relevant for geth users in this PR: The
GraphQL API is no longer available separately from the JSON-RPC HTTP
server. If you want GraphQL, you need to enable it using the
./geth --http --graphql flag combination.
The --graphql.port and --graphql.addr flags are no longer available.
* rpc flags related to starting http server renamed to http
* old rpc flags aliased and still functional
* pprof flags fixed
* renames gpo related flags
* linted
* renamed rpc flags for consistency and clarity
* added warn logs
* added more warn logs for all deprecated flags for consistency
* moves legacy flags to separate file, hides older flags under show-deprecated-flags command
* legacy prefix and moved some more legacy flags to legacy file
* fixed circular import
* added docs
* fixed imports lint error
* added notes about when flags were deprecated
* cmd/utils: group flags by deprecation date + reorder by date,
* modified deprecated comments for consistency, added warn log for --rpc
* making sure deprecated flags are still functional
* show-deprecated-flags command cleaned up
* fixed lint errors
* corrected merge conflict
* IsSet --> GlobalIsSet
* uncategorized flags, if not deprecated, displayed under misc
Co-authored-by: Martin Holst Swende <martin@swende.se>
