* frame-benchmarking-cli: Remove native dispatch requirement
No need for this, we can just use the `WasmExecutor` directly.
* Fixes
* Pass benchmarking host functions
* Ensure we can pass custom host functions
* Adds force_origin support
* Moves a couple of tests to showcase v2 with force_origin
* Adds remaining tests
* adds documentation
* minor
* adds test for invalid origin
* ".git/.scripts/commands/fmt/fmt.sh"
* updates param to use MaxCalls
* Fixes compilation error
* Updates doc comment
* Fixes test outputs
* Fixes test output
* ".git/.scripts/commands/fmt/fmt.sh"
---------
Co-authored-by: command-bot <>
* function generation with _name working, need to modify signature
* WIP
* support custom BenchmarkResult<T> type
* full support for BenchmarkResult<T> on benchmark function defs
* support () return type for benchmark function defs that don't use ?
* uncomment
* fix where clause handling
* fix benchmark function call bodies
* proper parsing of return type
* add UI tests for bad return type
* fix detection of missing last_stmt with defined return type
* UI tests covering missing last_stmt
* properly detect and complain about empty benchmark function defs
* fix missing Comma in Result<T, BenchmarkError> parsing + test
* add additional UI test
* allow complex path for BenchmarkResult and BenchmarkError in fn defs
* add UI tests covering complex path for BenchmarkResult, BenchmarkError
* retain doc comments and attributes
* also add attributes to struct
* add docs for benchmark function definition support
* fix imports on benchmark example
* fix issue with unused variables in extrinsic call fn def
* fix up docs
* remove support for v2::BenchmarkResult because it was confusing
* fix typo
* remove ability to use custom T for Result<T, BenchmarkError> in v2
* use missing call error instead of empty_fn()
* remove unneeded match statement
* Add a proper QED
Co-authored-by: Keith Yeung <kungfukeith11@gmail.com>
* fix other QED
Co-authored-by: Keith Yeung <kungfukeith11@gmail.com>
* cargo fmt
* add an explicit error for non TypePath as return type
* tweak error warning and add a UI test for non TypePath return
* remove comment
* add docs about T and I generic params
* improve docs referring to section "below"
* pull out return type checking logic into its own function
* pull out params parsing into its own function
* pull out call_def parsing into its own function
* add doc comment for missing_call()
* replace spaces with tabs
* add a result-based example to the benchmarking examples
---------
Co-authored-by: Keith Yeung <kungfukeith11@gmail.com>
* Change copyright year to 2023 from 2022
* Fix incorrect update of copyright year
* Remove years from copy right header
* Fix remaining files
* Fix typo in a header and remove update-copyright.sh
* initial impl
* add template test
* linear fit proof size
* always record proof when tracking storage
* calculate worst case pov
* remove duplicate worst case
* cargo run --quiet --profile=production --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark pallet --chain=dev --steps=50 --repeat=20 --pallet=pallet_assets --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/assets/src/weights.rs --template=./.maintain/frame-weight-template.hbs
* more comment output
* add cli for worst case map size
* update name
* clap does not support underscores
* rename
* expose worst case map values
* improve some comments
* cargo run --quiet --profile=production --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark pallet --chain=dev --steps=50 --repeat=20 --pallet=pallet_assets --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/assets/src/weights.rs --template=./.maintain/frame-weight-template.hbs
* update template
* cargo run --quiet --profile=production --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark pallet --chain=dev --steps=50 --repeat=20 --pallet=pallet_assets --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/assets/src/weights.rs --template=./.maintain/frame-weight-template.hbs
* fix fmt
* more fmt
* more fmt
* Dont panic when there is no proof
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Fix test features
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Whitelist :extrinsic_index
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Use whitelist when recording proof
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Add logs
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Add PoV testing pallet
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Deploy PoV testing pallet
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Storage benches reside in the PoV pallet
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Linear regress PoV per component
Splits the PoV calculation into "measured" and "estimated".
The measured part is reported by the Proof recorder and linear
regressed over all components at once.
The estimated part is calculated as worst-case by using the max
PoV size per storage access and calculating one linear regress per
component. This gives each component a (possibly) independent PoV.
For now the measured size will always be lower than the PoV on
Polkadot since it is measured on an empty snapshot. The measured
part is therefor only used as diagnostic for debugging.
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Put PoV into the weight templates
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* fmt
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Extra alanysis choise for PoV
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Add+Fix tests
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Make benches faster
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Cleanup
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Use same template comments
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* ".git/.scripts/bench-bot.sh" pallet dev pallet_balances
* ".git/.scripts/bench-bot.sh" pallet dev pallet_democracy
* Update referenda mock BlockWeights
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Take measured value size into account
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* clippy
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* ".git/.scripts/bench-bot.sh" pallet dev pallet_scheduler
* WIP
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* proof_size: None
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* WIP
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* WIP
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* WIP
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* ugly, but works
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* WIP
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* WIP
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* WIP
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* wup
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* WIP
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* WIP
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* WIP
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* WIP
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Add pov_mode attribute to the benchmarks! macro
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Use pov_mode attribute in PoV benchmarking
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Update tests
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Scheduler, Whitelist: Add pov_mode attr
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Update PoV weights
* Add CLI arg: default-pov-mode
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Fix tests
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* fmt
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* fix
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Revert "Update PoV weights"
This reverts commit 2f3ac2387396470b118122a6ff8fa4ee12216f4b.
* Revert "WIP"
This reverts commit c34b538cd2bc45da4544e887180184e30957904a.
* Revert first approach
This reverts commit range 8ddaa2fffe5930f225a30bee314d0b7c94c344dd^..4c84f8748e5395852a9e0e25b0404953fee1a59e
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Clippy
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Add extra benchmarks
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_alliance
* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_whitelist
* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_scheduler
* fmt
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Clippy
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Clippy 🤦
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Add reference benchmarks
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Fix doc comments
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Undo logging
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Add 'Ignored' pov_mode
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Allow multiple attributes per benchmark
Turns out that the current benchmarking syntax does not support
multiple attributes per bench 🤦. Changing it to support that
since otherwise the `pov_mode` would conflict with the others.
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Validate pov_mode syntax
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Ignore PoV for all contract benchmarks
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Test
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* test
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Bump macro recursion limit
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* fmt
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Update contract weights
They dont have a PoV component anymore.
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* fix test ffs
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* pov_mode is unsupported in V2 syntax
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Fix pallet ui tests
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* update pallet ui
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Fix pallet ui tests
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Update weights
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Parity Bot <admin@parity.io>
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: command-bot <>
Co-authored-by: Your Name <you@example.com>
The macros in frame-benchmarking relied on having all the macros imported, which isn't a behavior
for a proper macro :D This pr fixes this by making all internal macro usages absolute.
* Use `array-bytes` for All Array/Bytes/Hex Operations
Signed-off-by: Xavier Lau <xavier@inv.cafe>
* Reorder
* Self Review
* Format
* Fix Tests
* Bump `array-bytes`
* Optimize large test res
Signed-off-by: Xavier Lau <xavier@inv.cafe>
Co-authored-by: parity-processbot <>
* BREAKING: Rename Origin
* more renaming
* a bit more renaming
* fix
* more fixing
* fix in frame_support
* even more fixes
* fix
* small fix
* ...
* update .stderr
* docs
* update docs
* update docs
* docs
* Improve base weights consistency and make sure they're never zero
* Switch back to `linregress` crate; add back estimation errors
* Move the test into `mod tests`
* Use all of the samples instead of only the first one
* Use full precision extrinsic base weights and slopes
* Add an extra comment
* ".git/.scripts/bench-bot.sh" pallet dev pallet_contracts
Co-authored-by: parity-processbot <>
Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
* pallet-identity: Be more paranoid ;)
Check that a registrar is providing judgement for the correct identity.
* Fixes
* Fix alliance
* 🤦
* Fixes
* ...
* Improve usability of add_benchmark and list_benchmark.
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* node-template: use new define_benchmarks syntax
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* make CI happy
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* remove old imports
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* fix TryBuild tests
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* Revert "fix TryBuild tests"
This reverts commit 82ea52fd25c0ef5efa46669217694835a7404d4e.
* review: remove blank lines
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
* starting
* Updated from other branch.
* setting flag
* flag in storage struct
* fix flagging to access and insert.
* added todo to fix
* also missing serialize meta to storage proof
* extract meta.
* Isolate old trie layout.
* failing test that requires storing in meta when old hash scheme is used.
* old hash compatibility
* Db migrate.
* runing tests with both states when interesting.
* fix chain spec test with serde default.
* export state (missing trie function).
* Pending using new branch, lacking genericity on layout resolution.
* extract and set global meta
* Update to branch 4
* fix iterator with root flag (no longer insert node).
* fix trie root hashing of root
* complete basic backend.
* Remove old_hash meta from proof that do not use inner_hashing.
* fix trie test for empty (force layout on empty deltas).
* Root update fix.
* debug on meta
* Use trie key iteration that do not include value in proofs.
* switch default test ext to use inner hash.
* small integration test, and fix tx cache mgmt in ext.
test failing
* Proof scenario at state-machine level.
* trace for db upgrade
* try different param
* act more like iter_from.
* Bigger batches.
* Update trie dependency.
* drafting codec changes and refact
* before removing unused branch no value alt hashing.
more work todo rename all flag var to alt_hash, and remove extrinsic
replace by storage query at every storage_root call.
* alt hashing only for branch with value.
* fix trie tests
* Hash of value include the encoded size.
* removing fields(broken)
* fix trie_stream to also include value length in inner hash.
* triedbmut only using alt type if inner hashing.
* trie_stream to also only use alt hashing type when actually alt hashing.
* Refactor meta state, logic should work with change of trie treshold.
* Remove NoMeta variant.
* Remove state_hashed trigger specific functions.
* pending switching to using threshold, new storage root api does not
make much sense.
* refactoring to use state from backend (not possible payload changes).
* Applying from previous state
* Remove default from storage, genesis need a special build.
* rem empty space
* Catch problem: when using triedb with default: we should not revert
nodes: otherwhise thing as trie codec cannot decode-encode without
changing state.
* fix compilation
* Right logic to avoid switch on reencode when default layout.
* Clean up some todos
* remove trie meta from root upstream
* update upstream and fix benches.
* split some long lines.
* UPdate trie crate to work with new design.
* Finish update to refactored upstream.
* update to latest triedb changes.
* Clean up.
* fix executor test.
* rust fmt from master.
* rust format.
* rustfmt
* fix
* start host function driven versioning
* update state-machine part
* still need access to state version from runtime
* state hash in mem: wrong
* direction likely correct, but passing call to code exec for genesis
init seem awkward.
* state version serialize in runtime, wrong approach, just initialize it
with no threshold for core api < 4 seems more proper.
* stateversion from runtime version (core api >= 4).
* update trie, fix tests
* unused import
* clean some TODOs
* Require RuntimeVersionOf for executor
* use RuntimeVersionOf to resolve genesis state version.
* update runtime version test
* fix state-machine tests
* TODO
* Use runtime version from storage wasm with fast sync.
* rustfmt
* fmt
* fix test
* revert useless changes.
* clean some unused changes
* fmt
* removing useless trait function.
* remove remaining reference to state_hash
* fix some imports
* Follow chain state version management.
* trie update, fix and constant threshold for trie layouts.
* update deps
* Update to latest trie pr changes.
* fix benches
* Verify proof requires right layout.
* update trie_root
* Update trie deps to latest
* Update to latest trie versioning
* Removing patch
* update lock
* extrinsic for sc-service-test using layout v0.
* Adding RuntimeVersionOf to CallExecutor works.
* fmt
* error when resolving version and no wasm in storage.
* use existing utils to instantiate runtime code.
* Patch to delay runtime switch.
* Revert "Patch to delay runtime switch."
This reverts commit 67e55fee468f1a0cda853f5362b22e0d775786da.
* useless closure
* remove remaining state_hash variables.
* Remove outdated comment
* useless inner hash
* fmt
* fmt and opt-in feature to apply state change.
* feature gate core version, use new test feature for node and test node
* Use a 'State' api version instead of Core one.
* fix merge of test function
* use blake macro.
* Fix state api (require declaring the api in runtime).
* Opt out feature, fix macro for io to select a given version
instead of latest.
* run test nodes on new state.
* fix
* Apply review change (docs and error).
* fmt
* use explicit runtime_interface in doc test
* fix ui test
* fix doc test
* fmt
* use default for path and specname when resolving version.
* small review related changes.
* doc value size requirement.
* rename old_state feature
* Remove macro changes
* feature rename
* state version as host function parameter
* remove flag for client api
* fix tests
* switch storage chain proof to V1
* host functions, pass by state version enum
* use WrappedRuntimeCode
* start
* state_version in runtime version
* rust fmt
* Update storage proof of max size.
* fix runtime version rpc test
* right intent of convert from compat
* fix doc test
* fix doc test
* split proof
* decode without replay, and remove some reexports.
* Decode with compatibility by default.
* switch state_version to u8. And remove RuntimeVersionBasis.
* test
* use api when reading embedded version
* fix decode with apis
* extract core version instead
* test fix
* unused import
* review changes.
Co-authored-by: kianenigma <kian@parity.io>
* Generate one #[test] fn per bench case.
* Update benchmark macro syntax in frame pallets.
* Explain new benchmark macro syntax in example pallet.
* support with and without a semicolon
* update pallets to use individual tests
* migrate staking too
* migrate more pallets
* fix up democracy and use individual tests
* Fix comment
* Put println message in panic
* Remove `another_set_dummy` from doc
`another_set_dummy` is not present in the benchmarking.rs (anymore).
* Update doc for benchmarks macro
* Update doc for impl_benchmark_test_suite macro
Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
* First two bechmarks converted
* Add decoding weight to benchmarks.
* Update frame/democracy/src/benchmarking.rs
* Adapt to new Call-ing convention
* Resolve conflicts and change more calls
* Remove error impl for codec and use plain `expect` for error handling instead
* Compile fix
* Spaces to tabs
* Update frame/democracy/src/benchmarking.rs
Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
* Add origin-type specifier to benchmarks macro
* formatting
* Update frame/benchmarking/src/lib.rs
Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
* Change manual to automatic benchmark syntax
* Formatting
* Revert "Change manual to automatic benchmark syntax"
This reverts commit ea5b5d906b318b6525c1e6d2bd05c5011595c21a.
Because tests are lost and cleanup code in the verify function is not run on failing calls.
Co-authored-by: Guillaume Thiolliere <gui.thiolliere@gmail.com>
Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
* dont convert benchmark error
* fix warning
* fix more warnings
* more fixes
* more fixes
* add missing feature deps
* Update frame/election-provider-multi-phase/src/benchmarking.rs
Co-authored-by: Alexander Theißen <alex.theissen@me.com>
* Update frame/election-provider-multi-phase/src/benchmarking.rs
Co-authored-by: Alexander Theißen <alex.theissen@me.com>
* use from
Co-authored-by: Alexander Theißen <alex.theissen@me.com>
* Run cargo fmt on the whole code base
* Second run
* Add CI check
* Fix compilation
* More unnecessary braces
* Handle weights
* Use --all
* Use correct attributes...
* Fix UI tests
* AHHHHHHHHH
* 🤦
* Docs
* Fix compilation
* 🤷
* Please stop
* 🤦 x 2
* More
* make rustfmt.toml consistent with polkadot
Co-authored-by: André Silva <andrerfosilva@gmail.com>
* Use 'Pallet' struct in construct_runtime.
* Fix genesis and metadata macro.
* Fix 'Pallet' type alias.
* Replace 'Module' with 'Pallet' for all construct_runtime use cases.
* Replace more deprecated 'Module' struct.
* Bring back AllModules and AllPalletsWithSystem type, but deprecate them.
* Replace deprecated 'Module' struct from merge master.
* Minor fix.
* Fix UI tests.
* Revert UI override in derive_no_bound.
* Fix more deprecated 'Module' use from master branch.
* Fix more deprecated 'Module' use from master branch.
* Init `RuntimeLogger` automatically for each runtime api call
This pr change the runtime api in such a way to always and automatically
enable the `RuntimeLogger`. This enables the user to use `log` or
`tracing` from inside the runtime to create log messages. As logging
introduces some extra code and especially increases the size of the wasm
blob. It is advised to disable all logging completely with
`sp-api/disable-logging` when doing the wasm builds for the on-chain
wasm runtime.
Besides these changes, the pr also brings most of the logging found in
frame to the same format "runtime::*".
* Update frame/im-online/src/lib.rs
Co-authored-by: Guillaume Thiolliere <gui.thiolliere@gmail.com>
* Update test-utils/runtime/Cargo.toml
* Fix test
* Don't use tracing in the runtime, as we don't support it :D
* Fixes
Co-authored-by: Guillaume Thiolliere <gui.thiolliere@gmail.com>
Juan