Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Fixed flakes and added parallelization to ChainComponents tests #15537

Merged
merged 2 commits into from
Dec 23, 2024
Merged

Fixed flakes and added parallelization to ChainComponents tests #15537

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
9f03171
Fixed flakes and added parallelization to ChainComponents tests
silaslenihan Dec 5, 2024
7d11d5a
Refactored test interface to enable parallelization
silaslenihan Dec 11, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 5 additions & 0 deletions .changeset/fresh-lobsters-fly.md
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"chainlink": minor
---

#internal Refactored ChainComponents tests to run in parallel
6 changes: 3 additions & 3 deletions core/scripts/go.mod
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@ replace github.com/smartcontractkit/chainlink/deployment => ../../deployment
// creating potential merge conflicts.
require (
github.com/smartcontractkit/chainlink/deployment v0.0.0-20241206210521-125d98cdaf66
github.com/smartcontractkit/chainlink/v2 v2.0.0-20241206210521-125d98cdaf66
github.com/smartcontractkit/chainlink/v2 v2.14.0-mercury-20240807.0.20241106193309-5560cd76211a
)

require (
Expand All @@ -33,7 +33,7 @@ require (
github.com/prometheus/client_golang v1.20.5
github.com/shopspring/decimal v1.4.0
github.com/smartcontractkit/chainlink-automation v0.8.1
github.com/smartcontractkit/chainlink-common v0.4.1-0.20241217120918-bbe318cd0760
github.com/smartcontractkit/chainlink-common v0.4.1-0.20241223143929-db7919d60550
github.com/smartcontractkit/libocr v0.0.0-20241007185508-adbe57025f12
github.com/spf13/cobra v1.8.1
github.com/spf13/viper v1.19.0
Expand Down Expand Up @@ -309,7 +309,7 @@ require (
github.com/smartcontractkit/chainlink-feeds v0.1.1 // indirect
github.com/smartcontractkit/chainlink-protos/job-distributor v0.6.0 // indirect
github.com/smartcontractkit/chainlink-protos/orchestrator v0.4.0 // indirect
github.com/smartcontractkit/chainlink-solana v1.1.1-0.20241219173444-150f7443fdd3 // indirect
github.com/smartcontractkit/chainlink-solana v1.1.1-0.20241223151630-eac4f1508dce // indirect
github.com/smartcontractkit/chainlink-starknet/relayer v0.1.1-0.20241202202529-2033490e77b8 // indirect
github.com/smartcontractkit/chainlink-testing-framework/lib v1.50.13 // indirect
github.com/smartcontractkit/grpc-proxy v0.0.0-20240830132753-a7e17fec5ab7 // indirect
Expand Down
20 changes: 16 additions & 4 deletions core/scripts/go.sum
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -160,6 +160,8 @@ github.com/aws/aws-sdk-go v1.22.1/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN
github.com/aws/aws-sdk-go v1.23.20/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
github.com/aws/aws-sdk-go v1.54.19 h1:tyWV+07jagrNiCcGRzRhdtVjQs7Vy41NwsuOcl0IbVI=
github.com/aws/aws-sdk-go v1.54.19/go.mod h1:eRwEWoyTWFMVYVQzKMNHWP5/RV4xIUGMQfXQHfHkpNU=
github.com/aybabtme/rgbterm v0.0.0-20170906152045-cc83f3b3ce59 h1:WWB576BN5zNSZc/M9d/10pqEx5VHNhaQ/yOVAkmj5Yo=
github.com/aybabtme/rgbterm v0.0.0-20170906152045-cc83f3b3ce59/go.mod h1:q/89r3U2H7sSsE2t6Kca0lfwTK8JdoNGS/yzM/4iH5I=
github.com/bahlo/generic-list-go v0.2.0 h1:5sz/EEAK+ls5wF+NeqDpk5+iNdMDXrh3z3nPnH1Wvgk=
github.com/bahlo/generic-list-go v0.2.0/go.mod h1:2KvAjgMlE5NNynlg/5iLrrCCZ2+5xWbdbCW3pNTGyYg=
github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
Expand Down Expand Up @@ -189,6 +191,8 @@ github.com/btcsuite/btcd/chaincfg/chainhash v1.1.0 h1:59Kx4K6lzOW5w6nFlA0v5+lk/6
github.com/btcsuite/btcd/chaincfg/chainhash v1.1.0/go.mod h1:7SFka0XMvUgj3hfZtydOrQY2mwhPclbT2snogU7SQQc=
github.com/bufbuild/protocompile v0.4.0 h1:LbFKd2XowZvQ/kajzguUp2DC9UEIQhIq77fZZlaQsNA=
github.com/bufbuild/protocompile v0.4.0/go.mod h1:3v93+mbWn/v3xzN+31nwkJfrEpAUwp+BagBSZWx+TP8=
github.com/buger/goterm v0.0.0-20200322175922-2f3e71b85129 h1:gfAMKE626QEuKG3si0pdTRcr/YEbBoxY+3GOH3gWvl4=
github.com/buger/goterm v0.0.0-20200322175922-2f3e71b85129/go.mod h1:u9UyCz2eTrSGy6fbupqJ54eY5c4IC8gREQ1053dK12U=
github.com/buger/jsonparser v1.1.1 h1:2PnMjfWD7wBILjqQbt530v576A/cAbQvEW9gGIpYMUs=
github.com/buger/jsonparser v1.1.1/go.mod h1:6RYKKt7H4d4+iWqouImQ9R2FZql3VbhNgx27UK13J/0=
github.com/bytecodealliance/wasmtime-go/v23 v23.0.0 h1:NJvU4S8KEk1GnF6+FvlnzMD/8wXTj/mYJSG6Q4yu3Pw=
Expand Down Expand Up @@ -407,6 +411,8 @@ github.com/gagliardetto/solana-go v1.8.4 h1:vmD/JmTlonyXGy39bAo0inMhmbdAwV7rXZtL
github.com/gagliardetto/solana-go v1.8.4/go.mod h1:i+7aAyNDTHG0jK8GZIBSI4OVvDqkt2Qx+LklYclRNG8=
github.com/gagliardetto/treeout v0.1.4 h1:ozeYerrLCmCubo1TcIjFiOWTTGteOOHND1twdFpgwaw=
github.com/gagliardetto/treeout v0.1.4/go.mod h1:loUefvXTrlRG5rYmJmExNryyBRh8f89VZhmMOyCyqok=
github.com/gagliardetto/utilz v0.1.1 h1:/etW4hl607emKg6R6Lj9jRJ9d6ue2AQOyjhuAwjzs1U=
github.com/gagliardetto/utilz v0.1.1/go.mod h1:b+rGFkRHz3HWJD0RYMzat47JyvbTtpE0iEcYTRJTLLA=
github.com/gballet/go-libpcsclite v0.0.0-20191108122812-4678299bea08 h1:f6D9Hr8xV8uYKlyuj8XIruxlh9WjVjdh1gIicAS7ays=
github.com/gballet/go-libpcsclite v0.0.0-20191108122812-4678299bea08/go.mod h1:x7DCsMOv1taUwEWCzT4cmDeAkigA5/QCwUodaVOe8Ww=
github.com/gedex/inflector v0.0.0-20170307190818-16278e9db813 h1:Uc+IZ7gYqAf/rSGFplbWBSHaGolEQlNLgMgSE3ccnIQ=
Expand Down Expand Up @@ -668,6 +674,8 @@ github.com/gtank/merlin v0.1.1 h1:eQ90iG7K9pOhtereWsmyRJ6RAwcP4tHTDBHXNg+u5is=
github.com/gtank/merlin v0.1.1/go.mod h1:T86dnYJhcGOh5BjZFCJWTDeTK7XW8uE+E21Cy/bIQ+s=
github.com/gtank/ristretto255 v0.1.2 h1:JEqUCPA1NvLq5DwYtuzigd7ss8fwbYay9fi4/5uMzcc=
github.com/gtank/ristretto255 v0.1.2/go.mod h1:Ph5OpO6c7xKUGROZfWVLiJf9icMDwUeIvY4OmlYW69o=
github.com/hako/durafmt v0.0.0-20200710122514-c0fb7b4da026 h1:BpJ2o0OR5FV7vrkDYfXYVJQeMNWa8RhklZOpW2ITAIQ=
github.com/hako/durafmt v0.0.0-20200710122514-c0fb7b4da026/go.mod h1:5Scbynm8dF1XAPwIwkGPqzkM/shndPm79Jd1003hTjE=
github.com/hashicorp/consul/api v1.1.0/go.mod h1:VmuI/Lkw1nC05EYQWNKwWGbkg+FbDBtguAZLlVdkD9Q=
github.com/hashicorp/consul/sdk v0.1.1/go.mod h1:VKf9jXwCTEY1QZP2MOLRhb5i/I/ssyNV1vwHyQBF0x8=
github.com/hashicorp/consul/sdk v0.16.1 h1:V8TxTnImoPD5cj0U9Spl0TUxcytjcbbJeADFF07KdHg=
Expand Down Expand Up @@ -917,6 +925,8 @@ github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5
github.com/mfridman/interpolate v0.0.2 h1:pnuTK7MQIxxFz1Gr+rjSIx9u7qVjf5VOoM/u6BbAxPY=
github.com/mfridman/interpolate v0.0.2/go.mod h1:p+7uk6oE07mpE/Ik1b8EckO0O4ZXiGAfshKBWLUM9Xg=
github.com/miekg/dns v1.0.14/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg=
github.com/miekg/dns v1.1.61 h1:nLxbwF3XxhwVSm8g9Dghm9MHPaUZuqhPiGL+675ZmEs=
github.com/miekg/dns v1.1.61/go.mod h1:mnAarhS3nWaW+NVP2wTkYVIZyHNJ098SJZUki3eykwQ=
github.com/mimoo/StrobeGo v0.0.0-20181016162300-f8f6d4d2b643/go.mod h1:43+3pMjjKimDBf5Kr4ZFNGbLql1zKkbImw+fZbw3geM=
github.com/mimoo/StrobeGo v0.0.0-20210601165009-122bf33a46e0 h1:QRUSJEgZn2Snx0EmT/QLXibWjSUDjKWvXIT19NBVp94=
github.com/mimoo/StrobeGo v0.0.0-20210601165009-122bf33a46e0/go.mod h1:43+3pMjjKimDBf5Kr4ZFNGbLql1zKkbImw+fZbw3geM=
Expand Down Expand Up @@ -1105,6 +1115,8 @@ github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQD
github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk=
github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
github.com/ryanuber/columnize v0.0.0-20160712163229-9b3edd62028f/go.mod h1:sm1tb6uqfes/u+d4ooFouqFdy9/2g9QGwK3SQygK0Ts=
github.com/ryanuber/go-glob v1.0.0 h1:iQh3xXAumdQ+4Ufa5b25cRpC5TYKlno6hsv6Cb3pkBk=
github.com/ryanuber/go-glob v1.0.0/go.mod h1:807d1WSdnB0XRJzKNil9Om6lcp/3a0v4qIHxIXzX/Yc=
github.com/sagikazarmark/locafero v0.4.0 h1:HApY1R9zGo4DBgr7dqsTH/JJxLTTsOt7u6keLGt6kNQ=
github.com/sagikazarmark/locafero v0.4.0/go.mod h1:Pe1W6UlPYUk/+wc/6KFhbORCfqzgYEpgQ3O5fPuL3H4=
github.com/sagikazarmark/slog-shim v0.1.0 h1:diDBnUNK9N/354PgrxMywXnAwEr1QZcOr6gto+ugjYE=
Expand Down Expand Up @@ -1150,8 +1162,8 @@ github.com/smartcontractkit/chainlink-automation v0.8.1 h1:sTc9LKpBvcKPc1JDYAmgB
github.com/smartcontractkit/chainlink-automation v0.8.1/go.mod h1:Iij36PvWZ6blrdC5A/nrQUBuf3MH3JvsBB9sSyc9W08=
github.com/smartcontractkit/chainlink-ccip v0.0.0-20241218114855-f74219171000 h1:6Zzr/R1j6P7bbvcUlt5WUIbItvrrGdGzIsiAzQezcwo=
github.com/smartcontractkit/chainlink-ccip v0.0.0-20241218114855-f74219171000/go.mod h1:ncjd6mPZSRlelEqH/2KeLE1pU3UlqzBSn8RYkEoECzY=
github.com/smartcontractkit/chainlink-common v0.4.1-0.20241217120918-bbe318cd0760 h1:lB5A3TP0zOVuu1n0kEm6d8/o/4Knh6HLvsU/GChk+sI=
github.com/smartcontractkit/chainlink-common v0.4.1-0.20241217120918-bbe318cd0760/go.mod h1:yti7e1+G9hhkYhj+L5sVUULn9Bn3bBL5/AxaNqdJ5YQ=
github.com/smartcontractkit/chainlink-common v0.4.1-0.20241223143929-db7919d60550 h1:rRs74zjDJ7do5aYEXSU/sOnLnlbYCNqM8BrvEx/0NH8=
github.com/smartcontractkit/chainlink-common v0.4.1-0.20241223143929-db7919d60550/go.mod h1:yti7e1+G9hhkYhj+L5sVUULn9Bn3bBL5/AxaNqdJ5YQ=
github.com/smartcontractkit/chainlink-cosmos v0.5.2-0.20241202195413-82468150ac1e h1:PRoeby6ZlTuTkv2f+7tVU4+zboTfRzI+beECynF4JQ0=
github.com/smartcontractkit/chainlink-cosmos v0.5.2-0.20241202195413-82468150ac1e/go.mod h1:mUh5/woemsVaHgTorA080hrYmO3syBCmPdnWc/5dOqk=
github.com/smartcontractkit/chainlink-data-streams v0.1.1-0.20241216163550-fa030d178ba3 h1:aeiBdBHGY8QNftps+VqrIk6OnfeeOD5z4jrAabW4ZSc=
Expand All @@ -1162,8 +1174,8 @@ github.com/smartcontractkit/chainlink-protos/job-distributor v0.6.0 h1:0ewLMbAz3
github.com/smartcontractkit/chainlink-protos/job-distributor v0.6.0/go.mod h1:/dVVLXrsp+V0AbcYGJo3XMzKg3CkELsweA/TTopCsKE=
github.com/smartcontractkit/chainlink-protos/orchestrator v0.4.0 h1:ZBat8EBvE2LpSQR9U1gEbRV6PfAkiFdINmQ8nVnXIAQ=
github.com/smartcontractkit/chainlink-protos/orchestrator v0.4.0/go.mod h1:m/A3lqD7ms/RsQ9BT5P2uceYY0QX5mIt4KQxT2G6qEo=
github.com/smartcontractkit/chainlink-solana v1.1.1-0.20241219173444-150f7443fdd3 h1:AIIiwrZ5T4nEjFT33aLZKoXwD63JSMu72wWe/rUdfm0=
github.com/smartcontractkit/chainlink-solana v1.1.1-0.20241219173444-150f7443fdd3/go.mod h1:ARILnIgKelP0YkVzxXO111S9j0b4uKyt7iLpYjOkCtU=
github.com/smartcontractkit/chainlink-solana v1.1.1-0.20241223151630-eac4f1508dce h1:Mvpbr/Fi2IdU2EcmqCxhlCzs5ncnx+BwV80YweA4DZs=
github.com/smartcontractkit/chainlink-solana v1.1.1-0.20241223151630-eac4f1508dce/go.mod h1:qq+nW0JDnCCGMf2c38ZHjH8xgkAQnXKighjJr5JdDNE=
github.com/smartcontractkit/chainlink-starknet/relayer v0.1.1-0.20241202202529-2033490e77b8 h1:tNS7U9lrxkFvEuyxQv11HHOiV9LPDGC9wYEy+yM/Jv4=
github.com/smartcontractkit/chainlink-starknet/relayer v0.1.1-0.20241202202529-2033490e77b8/go.mod h1:EBrEgcdIbwepqguClkv8Ohy7CbyWSJaE4EC9aBJlQK0=
github.com/smartcontractkit/chainlink-testing-framework/lib v1.50.13 h1:T0kbw07Vb6xUyA9MIJZfErMgWseWi1zf7cYvRpoq7ug=
Expand Down
95 changes: 85 additions & 10 deletions core/services/relay/evm/chain_components_test.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@ import (
"math/big"
"os"
"strconv"
"sync"
"testing"
"time"

Expand All @@ -27,11 +28,11 @@ import (
commontestutils "github.com/smartcontractkit/chainlink-common/pkg/loop/testutils"
clcommontypes "github.com/smartcontractkit/chainlink-common/pkg/types"
"github.com/smartcontractkit/chainlink-common/pkg/types/interfacetests"
"github.com/smartcontractkit/chainlink-common/pkg/utils/tests"

htMocks "github.com/smartcontractkit/chainlink/v2/common/headtracker/mocks"
"github.com/smartcontractkit/chainlink/v2/core/chains/evm/assets"
"github.com/smartcontractkit/chainlink/v2/core/chains/evm/client"
"github.com/smartcontractkit/chainlink/v2/core/chains/evm/headtracker"
"github.com/smartcontractkit/chainlink/v2/core/chains/evm/logpoller"
lpMocks "github.com/smartcontractkit/chainlink/v2/core/chains/evm/logpoller/mocks"
evmtxmgr "github.com/smartcontractkit/chainlink/v2/core/chains/evm/txmgr"
Expand All @@ -50,6 +51,7 @@ import (
)

const commonGasLimitOnEvms = uint64(4712388)
const finalityDepth = 4

func TestContractReaderEventsInitValidation(t *testing.T) {
tests := []struct {
Expand Down Expand Up @@ -228,17 +230,51 @@ func TestChainReader_HealthReport(t *testing.T) {
}

func TestChainComponents(t *testing.T) {
tests.SkipFlakey(t, "https://smartcontract-it.atlassian.net/browse/BCFR-1083")
t.Parallel()
it := &EVMChainComponentsInterfaceTester[*testing.T]{Helper: &helper{}}
// TODO, generated binding tests are broken
it.DisableTests([]string{interfacetests.ContractReaderGetLatestValue})
it.Init(t)

// shared helper so all tests can run efficiently in parallel
helper := &helper{}
helper.Init(t)
deployLock := sync.Mutex{}
// add new subtests here so that it can be run on real chains too
RunChainComponentsEvmTests(t, it)
RunChainComponentsInLoopEvmTests[*testing.T](t, commontestutils.WrapContractReaderTesterForLoop(it))
RunChainComponentsInLoopEvmTests(t, WrapContractReaderTesterWithBindings(t, it))
t.Run("RunChainComponentsEvmTests", func(t *testing.T) {
t.Parallel()
it := &EVMChainComponentsInterfaceTester[*testing.T]{Helper: helper, DeployLock: &deployLock}
// These tests are broken in develop as well, so disable them for now
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

CC @poopoothegorilla Can you create an epic for general Chain Components work that is not urgent, but has to be done? Maybe just have 1 for now and then have them per chain

Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Created this epic https://smartcontract-it.atlassian.net/browse/NONEVM-1084 used the word "Hardening" which some other projects use for this type of work

it.DisableTests([]string{
interfacetests.ContractReaderQueryKeysReturnsDataTwoEventTypes,
interfacetests.ContractReaderQueryKeysReturnsDataAsValuesDotValue,
interfacetests.ContractReaderQueryKeysCanFilterWithValueComparator,
})
it.Setup(t)

RunChainComponentsEvmTests(t, it)
})

t.Run("RunChainComponentsInLoopEvmTests", func(t *testing.T) {
t.Parallel()
it := &EVMChainComponentsInterfaceTester[*testing.T]{Helper: helper, DeployLock: &deployLock}
wrapped := commontestutils.WrapContractReaderTesterForLoop(it)
// These tests are broken in develop as well, so disable them for now
wrapped.DisableTests([]string{
interfacetests.ContractReaderQueryKeysReturnsDataTwoEventTypes,
interfacetests.ContractReaderQueryKeysReturnsDataAsValuesDotValue,
interfacetests.ContractReaderQueryKeysCanFilterWithValueComparator,
})
wrapped.Setup(t)

RunChainComponentsInLoopEvmTests[*testing.T](t, wrapped, true)
})

t.Run("RunChainComponentsInLoopEvmTestsWithBindings", func(t *testing.T) {
t.Parallel()
it := &EVMChainComponentsInterfaceTester[*testing.T]{Helper: helper, DeployLock: &deployLock}
wrapped := WrapContractReaderTesterWithBindings(t, it)
// TODO, generated binding tests are broken
jmank88 marked this conversation as resolved.
Show resolved Hide resolved
wrapped.DisableTests([]string{interfacetests.ContractReaderGetLatestValue})
wrapped.Setup(t)
// generated tests are not compatible with parallel running atm
RunChainComponentsInLoopEvmTests(t, wrapped, false)
})
}

type helper struct {
Expand All @@ -249,6 +285,40 @@ type helper struct {
txm evmtxmgr.TxManager
client client.Client
db *sqlx.DB
lp logpoller.LogPoller
ht logpoller.HeadTracker
}

func getLPOpts() logpoller.Opts {
return logpoller.Opts{
PollPeriod: time.Millisecond,
FinalityDepth: finalityDepth,
BackfillBatchSize: 1,
RpcBatchSize: 1,
KeepFinalizedBlocksDepth: 10000,
}
}

func (h *helper) LogPoller(t *testing.T) logpoller.LogPoller {
if h.lp != nil {
return h.lp
}
ctx := testutils.Context(t)
lggr := logger.NullLogger
db := h.Database()

h.lp = logpoller.NewLogPoller(logpoller.NewORM(h.ChainID(), db, lggr), h.Client(t), lggr, h.HeadTracker(t), getLPOpts())
require.NoError(t, h.lp.Start(ctx))
return h.lp
}

func (h *helper) HeadTracker(t *testing.T) logpoller.HeadTracker {
if h.ht != nil {
return h.ht
}
lpOpts := getLPOpts()
h.ht = headtracker.NewSimulatedHeadTracker(h.Client(t), lpOpts.UseFinalityTag, lpOpts.FinalityDepth)
return h.ht
}

func (h *helper) Init(t *testing.T) {
Expand All @@ -260,6 +330,7 @@ func (h *helper) Init(t *testing.T) {

h.Backend()
h.client = h.Client(t)
h.LogPoller(t)

h.txm = h.TXM(t, h.client)
}
Expand Down Expand Up @@ -320,6 +391,10 @@ func (h *helper) ChainID() *big.Int {
return testutils.SimulatedChainID
}

func (h *helper) Database() *sqlx.DB {
return h.db
}

func (h *helper) NewSqlxDB(t *testing.T) *sqlx.DB {
return pgtest.NewSqlxDB(t)
}
Expand Down
Loading
Loading