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#! /bin/bash
# Runs the linters against dendrite
# The linters can take a lot of resources and are slow, so they can be
# configured using the following environment variables:
#
# - `DENDRITE_LINT_CONCURRENCY` - number of concurrent linters to run,
# golangci-lint defaults this to NumCPU
# - `GOGC` - how often to perform garbage collection during golangci-lint runs.
# Essentially a ratio of memory/speed. See https://github.com/golangci/golangci-lint#memory-usage-of-golangci-lint
# for more info.
set -eux
cd `dirname $0`/..
args=""
if [ ${1:-""} = "fast" ]
then args="--fast"
fi
echo "Installing golangci-lint..."
# Make a backup of go.{mod,sum} first
# TODO: Once go 1.13 is out, use go get's -mod=readonly option
# https://github.com/golang/go/issues/30667
cp go.mod go.mod.bak && cp go.sum go.sum.bak
go get github.com/golangci/golangci-lint/cmd/golangci-lint@v1.19.1
# Run linting
echo "Looking for lint..."
# Capture exit code to ensure go.{mod,sum} is restored before exiting
exit_code=0
golangci-lint run $args || exit_code=1
# Restore go.{mod,sum}
mv go.mod.bak go.mod && mv go.sum.bak go.sum
exit $exit_code
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