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  1. Nov 09, 2020
  2. Nov 06, 2020
    • Sergey Pepyakin's avatar
      Implement HRMP (#1900) · c96f8cfc
      Sergey Pepyakin authored
      
      
      * HRMP: Update the impl guide
      
      * HRMP: Incorporate the channel notifications into the guide
      
      * HRMP: Renaming in the impl guide
      
      * HRMP: Constrain the maximum number of HRMP messages per candidate
      
      This commit addresses the HRMP part of https://github.com/paritytech/polkadot/issues/1869
      
      * XCM: Introduce HRMP related message types
      
      * HRMP: Data structures and plumbing
      
      * HRMP: Configuration
      
      * HRMP: Data layout
      
      * HRMP: Acceptance & Enactment
      
      * HRMP: Test base logic
      
      * Update adder collator
      
      * HRMP: Runtime API for accessing inbound messages
      
      Also, removing some redundant fully-qualified names.
      
      * HRMP: Add diagnostic logging in acceptance criteria
      
      * HRMP: Additional tests
      
      * Self-review fixes
      
      * save test refactorings for the next time
      
      * Missed a return statement.
      
      * a formatting blip
      
      * Add missing logic for appending HRMP digests
      
      * Remove the channel contents vectors which became empty
      
      * Tighten HRMP channel digests invariants.
      
      * Apply suggestions from code review
      
      Co-authored-by: default avatarPeter Goodspeed-Niklaus <[email protected]>
      
      * Remove a note about sorting for channel id
      
      * Add missing rustdocs to the configuration
      
      * Clarify and update the invariant for HrmpChannelDigests
      
      * Make the onboarding invariant less sloppy
      
      Namely, introduce `Paras::is_valid_para` (in fact, it already is present
      in the implementation) and hook up the invariant to that.
      
      Note that this says "within a session" because I don't want to make it
      super strict on the session boundary. The logic on the session boundary
      should be extremely careful.
      
      * Make `CandidateCheckContext` use T::BlockNumber for hrmp_watermark
      
      Co-authored-by: default avatarPeter Goodspeed-Niklaus <[email protected]>
      c96f8cfc
  3. Nov 05, 2020
  4. Nov 03, 2020
    • s3krit's avatar
      remove stale migrations (#1914) · 033f208d
      s3krit authored
      033f208d
    • Shawn Tabrizi's avatar
      Update Proxy Filters (#1890) · 04eba097
      Shawn Tabrizi authored
      * Update proxy filters
      
      * add session
      04eba097
    • Shawn Tabrizi's avatar
      New Weights v0.8.26 (#1889) · 33daa45b
      Shawn Tabrizi authored
      
      
      * new polkadot weights
      
      * kusama weights
      
      * update for westend
      
      * cargo update -p sp-io
      
      * cargo run --release --features=runtime-benchmarks -- benchmark --chain=polkadot-dev --steps=50 --repeat=20 --pallet=pallet_session --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --header=./file_header.txt --output=./runtime/polkadot/src/weights/
      
      * cargo run --release --features=runtime-benchmarks -- benchmark --chain=westend-dev --steps=50 --repeat=20 --pallet=pallet_session --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --header=./file_header.txt --output=./runtime/westend/src/weights/
      
      * cargo run --release --features=runtime-benchmarks -- benchmark --chain=kusama-dev --steps=50 --repeat=20 --pallet=pallet_session --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --header=./file_header.txt --output=./runtime/kusama/src/weights/
      
      Co-authored-by: default avatarParity Benchmarking Bot <[email protected]>
      33daa45b
    • Bastian Köcher's avatar
      Parachain improvements (#1905) · 002e1141
      Bastian Köcher authored
      
      
      * Parachain improvements
      
      - Set the parachains configuration in Rococo genesis
      - Don't stop the overseer when a subsystem job is stopped
      - Several small code changes
      
      * Remove unused functionality
      
      * Return error from the runtime instead of printing it
      
      * Apply suggestions from code review
      
      Co-authored-by: default avatarPeter Goodspeed-Niklaus <[email protected]>
      
      * Update primitives/src/v1.rs
      
      Co-authored-by: default avatarPeter Goodspeed-Niklaus <[email protected]>
      
      * Update primitives/src/v1.rs
      
      Co-authored-by: default avatarPeter Goodspeed-Niklaus <[email protected]>
      
      * Fix test
      
      * Revert "Update primitives/src/v1.rs"
      
      This reverts commit 11fce2785acd1de481ca57815b8e18400f09fd52.
      
      * Revert "Update primitives/src/v1.rs"
      
      This reverts commit d6439fed4f954360c89fb1e12b73954902c76a41.
      
      * Revert "Return error from the runtime instead of printing it"
      
      This reverts commit cb4b5c0830ac516a6d54b2c24197e9354f2b98cb.
      
      * Revert "Fix test"
      
      This reverts commit 0c5fa1b5566d4cd3c55a55d485e707165ce7a59e.
      
      * Update runtime/parachains/src/runtime_api_impl/v1.rs
      
      Co-authored-by: default avatarSergei Shulepov <[email protected]>
      
      Co-authored-by: default avatarPeter Goodspeed-Niklaus <[email protected]>
      Co-authored-by: default avatarSergei Shulepov <[email protected]>
      002e1141
    • Peter Goodspeed-Niklaus's avatar
      add native logging to check_upward_messages (#1906) · 45c9aefd
      Peter Goodspeed-Niklaus authored
      
      
      * add native logging to check_upward_messages
      
      This doesn't affect the WASM builds, but ensures that native versions
      (such as are used for testing) emit diagnostics anytime the
      check_upward_messages function exits, which should reduce the pain
      of debugging when something goes wrong.
      
      * Apply suggestions from code review
      
      Co-authored-by: default avatarSergei Shulepov <[email protected]>
      
      * verb tense
      
      Co-authored-by: default avatarSergei Shulepov <[email protected]>
      45c9aefd
  5. Nov 02, 2020
  6. Oct 31, 2020
    • Bastian Köcher's avatar
      Adds test parachain adder collator (#1864) · f82de7b9
      Bastian Köcher authored
      
      
      * start working on building the real overseer
      
      Unfortunately, this fails to compile right now due to an upstream
      failure to compile which is probably brought on by a recent upgrade
      to rustc v1.47.
      
      * fill in AllSubsystems internal constructors
      
      * replace fn make_metrics with Metrics::attempt_to_register
      
      * update to account for #1740
      
      * remove Metrics::register, rename Metrics::attempt_to_register
      
      * add 'static bounds to real_overseer type params
      
      * pass authority_discovery and network_service to real_overseer
      
      It's not straightforwardly obvious that this is the best way to handle
      the case when there is no authority discovery service, but it seems
      to be the best option available at the moment.
      
      * select a proper database configuration for the availability store db
      
      * use subdirectory for av-store database path
      
      * apply Basti's patch which avoids needing to parameterize everything on Block
      
      * simplify path extraction
      
      * get all tests to compile
      
      * Fix Prometheus double-registry error
      
      for debugging purposes, added this to node/subsystem-util/src/lib.rs:472-476:
      
      ```rust
      Some(registry) => Self::try_register(registry).map_err(|err| {
      	eprintln!("PrometheusError calling {}::register: {:?}", std::any::type_name::<Self>(), err);
      	err
      }),
      ```
      
      That pointed out where the registration was failing, which led to
      this fix. The test still doesn't pass, but it now fails in a new
      and different way!
      
      * authorities must have authority discovery, but not necessarily overseer handlers
      
      * fix broken SpawnedSubsystem impls
      
      detailed logging determined that using the `Box::new` style of
      future generation, the `self.run` method was never being called,
      leading to dropped receivers / closed senders for those subsystems,
      causing the overseer to shut down immediately.
      
      This is not the final fix needed to get things working properly,
      but it's a good start.
      
      * use prometheus properly
      
      Prometheus lets us register simple counters, which aren't very
      interesting. It also allows us to register CounterVecs, which are.
      With a CounterVec, you can provide a set of labels, which can
      later be used to filter the counts.
      
      We were using them wrong, though. This pattern was repeated in a
      variety of places in the code:
      
      ```rust
      // panics with an cardinality mismatch
      let my_counter = register(CounterVec::new(opts, &["succeeded", "failed"])?, registry)?;
      my_counter.with_label_values(&["succeeded"]).inc()
      ```
      
      The problem is that the labels provided in the constructor are not
      the set of legal values which can be annotated, but a set of individual
      label names which can have individual, arbitrary values.
      
      This commit fixes that.
      
      * get av-store subsystem to actually run properly and not die on first signal
      
      * typo fix: incomming -> incoming
      
      * don't disable authority discovery in test nodes
      
      * Fix rococo-v1 missing session keys
      
      * Update node/core/av-store/Cargo.toml
      
      * try dummying out av-store on non-full-nodes
      
      * overseer and subsystems are required only for full nodes
      
      * Reduce the amount of warnings on browser target
      
      * Fix two more warnings
      
      * InclusionInherent should actually have an Inherent module on rococo
      
      * Ancestry: don't return genesis' parent hash
      
      * Update Cargo.lock
      
      * fix broken test
      
      * update test script: specify chainspec as script argument
      
      * Apply suggestions from code review
      
      Co-authored-by: default avatarBastian Köcher <[email protected]>
      
      * Update node/service/src/lib.rs
      
      Co-authored-by: default avatarBastian Köcher <[email protected]>
      
      * node/service/src/lib: Return error via ? operator
      
      * post-merge blues
      
      * add is_collator flag
      
      * prevent occasional av-store test panic
      
      * simplify fix; expand application
      
      * run authority_discovery in Role::Discover when collating
      
      * distinguish between proposer closed channel errors
      
      * add IsCollator enum, remove is_collator CLI flag
      
      * improve formatting
      
      * remove nop loop
      
      * Fix some stuff
      
      * Adds test parachain adder collator
      
      * Add sudo to Rococo, change session length to 30 seconds and some renaming
      
      * Update to the latest changes on master
      
      * Some fixes
      
      * Fix compilation
      
      * Update parachain/test-parachains/adder/collator/src/lib.rs
      
      Co-authored-by: default avatarSergei Shulepov <[email protected]>
      
      * Review comments
      
      * Downgrade transaction version
      
      * Fixes
      
      * MOARE
      
      * Register notification protocols
      
      * utils: remove unused error
      
      * av-store: more resilient to some errors
      
      * address review nits
      
      * address more review nits
      
      Co-authored-by: default avatarPeter Goodspeed-Niklaus <[email protected]>
      Co-authored-by: default avatarAndronik Ordian <[email protected]>
      Co-authored-by: default avatarFedor Sakharov <[email protected]>
      Co-authored-by: default avatarRobert Habermeier <[email protected]>
      Co-authored-by: default avatarPeter Goodspeed-Niklaus <[email protected]>
      Co-authored-by: default avatarMax Inden <[email protected]>
      Co-authored-by: default avatarSergey Shulepov <[email protected]>
      Co-authored-by: default avatarSergei Shulepov <[email protected]>
      f82de7b9
  7. Oct 30, 2020
  8. Oct 29, 2020
  9. Oct 28, 2020
    • s3krit's avatar
      e2e57cb8
    • Sergey Pepyakin's avatar
      Downward Message Processing implementation (#1859) · 9903bca2
      Sergey Pepyakin authored
      * DMP: data structures and plumbing
      
      * DMP: Implement DMP logic in the router module
      
      DMP: Integrate DMP parts into the inclusion module
      
      * DMP: Introduce the max size limit for the size of a downward message
      
      * DMP: Runtime API for accessing inbound messages
      
      * OCD
      
      Small clean ups
      
      * DMP: fix the naming of the error
      
      * DMP: add caution about a non-existent recipient
      9903bca2
    • Peter Goodspeed-Niklaus's avatar
      start working on building the real overseer (#1795) · 1a25c412
      Peter Goodspeed-Niklaus authored
      
      
      * start working on building the real overseer
      
      Unfortunately, this fails to compile right now due to an upstream
      failure to compile which is probably brought on by a recent upgrade
      to rustc v1.47.
      
      * fill in AllSubsystems internal constructors
      
      * replace fn make_metrics with Metrics::attempt_to_register
      
      * update to account for #1740
      
      * remove Metrics::register, rename Metrics::attempt_to_register
      
      * add 'static bounds to real_overseer type params
      
      * pass authority_discovery and network_service to real_overseer
      
      It's not straightforwardly obvious that this is the best way to handle
      the case when there is no authority discovery service, but it seems
      to be the best option available at the moment.
      
      * select a proper database configuration for the availability store db
      
      * use subdirectory for av-store database path
      
      * apply Basti's patch which avoids needing to parameterize everything on Block
      
      * simplify path extraction
      
      * get all tests to compile
      
      * Fix Prometheus double-registry error
      
      for debugging purposes, added this to node/subsystem-util/src/lib.rs:472-476:
      
      ```rust
      Some(registry) => Self::try_register(registry).map_err(|err| {
      	eprintln!("PrometheusError calling {}::register: {:?}", std::any::type_name::<Self>(), err);
      	err
      }),
      ```
      
      That pointed out where the registration was failing, which led to
      this fix. The test still doesn't pass, but it now fails in a new
      and different way!
      
      * authorities must have authority discovery, but not necessarily overseer handlers
      
      * fix broken SpawnedSubsystem impls
      
      detailed logging determined that using the `Box::new` style of
      future generation, the `self.run` method was never being called,
      leading to dropped receivers / closed senders for those subsystems,
      causing the overseer to shut down immediately.
      
      This is not the final fix needed to get things working properly,
      but it's a good start.
      
      * use prometheus properly
      
      Prometheus lets us register simple counters, which aren't very
      interesting. It also allows us to register CounterVecs, which are.
      With a CounterVec, you can provide a set of labels, which can
      later be used to filter the counts.
      
      We were using them wrong, though. This pattern was repeated in a
      variety of places in the code:
      
      ```rust
      // panics with an cardinality mismatch
      let my_counter = register(CounterVec::new(opts, &["succeeded", "failed"])?, registry)?;
      my_counter.with_label_values(&["succeeded"]).inc()
      ```
      
      The problem is that the labels provided in the constructor are not
      the set of legal values which can be annotated, but a set of individual
      label names which can have individual, arbitrary values.
      
      This commit fixes that.
      
      * get av-store subsystem to actually run properly and not die on first signal
      
      * typo fix: incomming -> incoming
      
      * don't disable authority discovery in test nodes
      
      * Fix rococo-v1 missing session keys
      
      * Update node/core/av-store/Cargo.toml
      
      * try dummying out av-store on non-full-nodes
      
      * overseer and subsystems are required only for full nodes
      
      * Reduce the amount of warnings on browser target
      
      * Fix two more warnings
      
      * InclusionInherent should actually have an Inherent module on rococo
      
      * Ancestry: don't return genesis' parent hash
      
      * Update Cargo.lock
      
      * fix broken test
      
      * update test script: specify chainspec as script argument
      
      * Apply suggestions from code review
      
      Co-authored-by: default avatarBastian Köcher <[email protected]>
      
      * Update node/service/src/lib.rs
      
      Co-authored-by: default avatarBastian Köcher <[email protected]>
      
      * node/service/src/lib: Return error via ? operator
      
      * post-merge blues
      
      * add is_collator flag
      
      * prevent occasional av-store test panic
      
      * simplify fix; expand application
      
      * run authority_discovery in Role::Discover when collating
      
      * distinguish between proposer closed channel errors
      
      * add IsCollator enum, remove is_collator CLI flag
      
      * improve formatting
      
      * remove nop loop
      
      * Fix some stuff
      
      Co-authored-by: default avatarAndronik Ordian <[email protected]>
      Co-authored-by: default avatarBastian Köcher <[email protected]>
      Co-authored-by: default avatarFedor Sakharov <[email protected]>
      Co-authored-by: default avatarRobert Habermeier <[email protected]>
      Co-authored-by: default avatarBastian Köcher <[email protected]>
      Co-authored-by: default avatarMax Inden <[email protected]>
      1a25c412
  10. Oct 27, 2020
  11. Oct 26, 2020
  12. Oct 25, 2020
  13. Oct 24, 2020
    • Sergey Pepyakin's avatar
      Runtime API for checking validation outputs (#1842) · abb282df
      Sergey Pepyakin authored
      * annoying whitespaces
      
      * update guide
      
      Add `CheckValidationOutputs` runtime api and also change the
      candidate-validation stuff
      
      * promote ValidationOutputs to global primitives
      
      i.e. move it from node specific primitives to global v1 primitives. This
      will be needed when we share it later in the runtime inclusion module
      
      * refactor acceptance checks in the inclusion module
      
      factor out the common code to share it during the block inclusion and
      for the forthcoming CheckValidationOutputs runtime api.
      
      Also note that the acceptance criteria was updated to incorporate checks
      that exist now in candidate-validation
      
      * plumb the runtime api outside
      
      * extract validation_data from ValidationOutputs
      
      * use runtime-api to check validation outputs
      
      apart from that refactor, update docs and tidy a bit
      
      * Update the maxium code size
      
      This is to fix a test that performs an upgrade.
      abb282df
  14. Oct 19, 2020
  15. Oct 17, 2020
  16. Oct 16, 2020
  17. Oct 15, 2020
  18. Oct 14, 2020
  19. Oct 09, 2020
    • Rakan Alhneiti's avatar
      Update to work with async keystore – Companion PR for #7000 (#1740) · bd75a4ce
      Rakan Alhneiti authored
      
      
      * Fix keystore types
      
      * Use SyncCryptoStorePtr
      
      * Borrow keystore
      
      * Fix unused imports
      
      * Fix polkadot service
      
      * Fix bitfield-distribution tests
      
      * Fix indentation
      
      * Fix backing tests
      
      * Fix tests
      
      * Fix provisioner tests
      
      * Removed SyncCryptoStorePtr
      
      * Fix services
      
      * Address PR feedback
      
      * Address PR feedback - 2
      
      * Update CryptoStorePtr imports to be from sp_keystore
      
      * Typo
      
      * Fix CryptoStore import
      
      * Document the reason behind using filesystem keystore
      
      * Remove VALIDATORS
      
      * Fix duplicate dependency
      
      * Mark sp-keystore as optional
      
      * Fix availability distribution
      
      * Fix call to sign_with
      
      * Fix keystore usage
      
      * Remove tokio and fix parachains Cargo config
      
      * Typos
      
      * Fix keystore dereferencing
      
      * Fix CryptoStore import
      
      * Fix provisioner
      
      * Fix node backing
      
      * Update services
      
      * Cleanup dependencies
      
      * Use sync_keystore
      
      * Fix node service
      
      * Fix node service - 2
      
      * Fix node service - 3
      
      * Rename CryptoStorePtr to SyncCryptoStorePtr
      
      * "Update Substrate"
      
      * Apply suggestions from code review
      
      * Update node/core/backing/Cargo.toml
      
      * Update primitives/src/v0.rs
      
      Co-authored-by: default avatarBastian Köcher <[email protected]>
      
      * Fix wasm build
      
      * Update Cargo.lock
      
      Co-authored-by: parity-processbot <>
      Co-authored-by: default avatarBastian Köcher <[email protected]>
      bd75a4ce
  20. Oct 08, 2020
    • Kian Paimani's avatar
      Companion for substrate/pull/6896 (#1610) · c5d04104
      Kian Paimani authored
      * make polkadot work again,
      
      * Fix build
      
      * "Update Substrate"
      
      Co-authored-by: parity-processbot <>
      c5d04104
    • Peter Goodspeed-Niklaus's avatar
      Remove old service, 3rd try (#1776) · c2941a27
      Peter Goodspeed-Niklaus authored
      * Remove old service, 3rd try
      
      i.e.
      Revert "Revert "Remove Old Service, 2nd try (#1732)" (#1758)"
      
      This reverts commit 9a0f08bf
      
      .
      
      Closes #1757.
      
      We now have some evidence that the polkadot validator was producing
      blocks after all; the reason the blocks_constructed metric was 0 was
      that as a new metric it hadn't yet been incorporated into that
      branch's codebase. See
      https://github.com/paritytech/polkadot/issues/1757#issuecomment-700977602
      
      As this PR is based on a newer `master` branch than the previous one,
      that should hopefully no longer be an issue.
      
      * paras trait now has an Origin type
      
      * initial work running a two node local net
      
      * use the right incantations so the nodes produce blocks together
      
      * improve internal documentation
      
      Co-authored-by: default avatarBastian Köcher <[email protected]>
      c2941a27
  21. Oct 06, 2020
    • ordian's avatar
      NetworkBridge: validator (authorities) discovery api (#1699) · ca89e3ed
      ordian authored
      
      
      * stupid, but it compiles
      
      * redo
      
      * cleanup
      
      * add ValidatorDiscovery to msgs
      
      * sketch network bridge code
      
      * ConnectToAuthorities instead of validators
      
      * more stuff
      
      * cleanup
      
      * more stuff
      
      * complete ConnectToAuthoritiesState
      
      * Update node/network/bridge/src/lib.rs
      
      Co-authored-by: default avatarPeter Goodspeed-Niklaus <[email protected]>
      
      * Collator protocol subsystem (#1659)
      
      * WIP
      
      * The initial implementation of the collator side.
      
      * Improve comments
      
      * Multiple collation requests
      
      * Add more tests and comments to validator side
      
      * Add comments, remove dead code
      
      * Apply suggestions from code review
      
      Co-authored-by: default avatarPeter Goodspeed-Niklaus <[email protected]>
      
      * Fix build after suggested changes
      
      * Also connect to the next validator group
      
      * Remove a Future impl and move TimeoutExt to util
      
      * Minor nits
      
      * Fix build
      
      * Change FetchCollations back to FetchCollation
      
      * Try this
      
      * Final fixes
      
      * Fix build
      
      Co-authored-by: default avatarPeter Goodspeed-Niklaus <[email protected]>
      
      * handle multiple in-flight connection requests
      
      * handle cancelled requests
      
      * Update node/core/runtime-api/src/lib.rs
      
      Co-authored-by: default avatarBernhard Schuster <[email protected]>
      
      * redo it again
      
      * more stuff
      
      * redo it again
      
      * update comments
      
      * workaround Future is not Send
      
      * fix trailing spaces
      
      * clarify comments
      
      * bridge: fix compilation in tests
      
      * update more comments
      
      * small fixes
      
      * port collator protocol to new validator discovery api
      
      * collator tests compile
      
      * collator tests pass
      
      * do not revoke a request when the stream receiver is closed
      
      * make revoking opt-in
      
      * fix is_fulfilled
      
      * handle request revokation in collator
      
      * tests
      
      * wait for validator connections asyncronously
      
      * fix compilation
      
      * relabel my todos
      
      * apply Fedor's patch
      
      * resolve reconnection TODO
      
      * resolve revoking TODO
      
      * resolve channel capacity TODO
      
      * resolve peer cloning TODO
      
      * resolve peer disconnected TODO
      
      * resolve PeerSet TODO
      
      * wip tests
      
      * more tests
      
      * resolve Arc TODO
      
      * rename pending to non_revoked
      
      * one more test
      
      * extract utility function into util crate
      
      * fix compilation in tests
      
      * Apply suggestions from code review
      
      Co-authored-by: default avatarFedor Sakharov <[email protected]>
      
      * revert pin_project removal
      
      * fix while let loop
      
      * Revert "revert pin_project removal"
      
      This reverts commit ae7f529d8de982ef66c3007dd1ff74c6ddce80d2.
      
      * fix compilation
      
      * Update node/subsystem/src/messages.rs
      
      * docs on pub items
      
      * guide updates
      
      * remove a TODO
      
      * small guide update
      
      * fix a typo
      
      * link to the issue
      
      * validator discovery: on_request docs
      
      Co-authored-by: default avatarPeter Goodspeed-Niklaus <[email protected]>
      Co-authored-by: default avatarFedor Sakharov <[email protected]>
      Co-authored-by: default avatarBernhard Schuster <[email protected]>
      ca89e3ed
    • Sergey Pepyakin's avatar
      Registrar v1 follow-ups (#1786) · 96f6b5ae
      Sergey Pepyakin authored
      * parachains: use the root origin for mock
      
      * registrar: notify the router module about the cleanup
      
      * add missing call to schedule_para_cleanup
      96f6b5ae
  22. Oct 05, 2020
  23. Oct 04, 2020
    • Kian Paimani's avatar
      Companion for substrate/pull/7215 (#1768) · 4d5b7a62
      Kian Paimani authored
      * Companion for substrate/pull/7215
      
      * More fixes
      
      * Fix build
      
      * fix
      
      * Fix again with normal
      
      * Fix build
      
      * Latest changes
      
      * "Update Substrate"
      
      Co-authored-by: parity-processbot <>
      4d5b7a62
  24. Oct 02, 2020