whisper/mailserver: reduce the max number of opened files (ethereum#1…

…8142)

This should reduce the occurences of travis failures on MacOS

Also fix some linter warnings

.dockerignore

@@ -1,7 +1,3 @@
-**/.git
-.git
-!.git/HEAD
-!.git/refs/heads
 **/*_test.go
 
 build/_workspace

.github/CODEOWNERS

@@ -2,12 +2,22 @@
 # Each line is a file pattern followed by one or more owners.
 
 accounts/usbwallet              @karalabe
+accounts/scwallet               @gballet
 accounts/abi                    @gballet
+cmd/clef                        @holiman
+cmd/puppeth                     @karalabe
 consensus                       @karalabe
-core/                           @karalabe @holiman
-eth/                            @karalabe
-les/                            @zsfelfoldi
-light/                          @zsfelfoldi
-mobile/                         @karalabe
+core/                           @karalabe @holiman @rjl493456442
+dashboard/                      @kurkomisi
+eth/                            @karalabe @holiman @rjl493456442
+graphql/                        @gballet
+les/                            @zsfelfoldi @rjl493456442
+light/                          @zsfelfoldi @rjl493456442
+mobile/                         @karalabe @ligi
 p2p/                            @fjl @zsfelfoldi
+rpc/                            @fjl @holiman
+p2p/simulations                 @zelig @janos @justelad
+p2p/protocols                   @zelig @janos @justelad
+p2p/testing                     @zelig @janos @justelad
+signer/                         @holiman
 whisper/                        @gballet @gluk256

.github/CONTRIBUTING.md

@@ -7,7 +7,7 @@ smallest of fixes!
 If you'd like to contribute to go-ethereum, please fork, fix, commit and send a 
 pull request for the maintainers to review and merge into the main code base. If
 you wish to submit more complex changes though, please check up with the core 
-devs first on [our gitter channel](https://gitter.im/nebulaai/nbai-node) to 
+devs first on [our gitter channel](https://gitter.im/ethereum/go-ethereum) to 
 ensure those changes are in line with the general philosophy of the project 
 and/or get some early feedback which can make both your efforts much lighter as
 well as our review and merge procedures quick and simple.
@@ -30,11 +30,11 @@ Please make sure your contributions adhere to our coding guidelines:
 Before you submit a feature request, please check and make sure that it isn't 
 possible through some other means. The JavaScript-enabled console is a powerful 
 feature in the right hands. Please check our 
-[Wiki page](https://github.com/nebulaai/nbai-node/wiki) for more info
+[Wiki page](https://github.com/ethereum/go-ethereum/wiki) for more info
 and help.
 
 ## Configuration, dependencies, and tests
 
-Please see the [Developers' Guide](https://github.com/nebulaai/nbai-node/wiki/Developers'-Guide)
+Please see the [Developers' Guide](https://github.com/ethereum/go-ethereum/wiki/Developers'-Guide)
 for more details on configuring your environment, managing project dependencies
 and testing procedures.

.github/ISSUE_TEMPLATE.md

@@ -1,6 +1,6 @@
 Hi there,
 
-please note that this is an issue tracker reserved for bug reports and feature requests.
+Please note that this is an issue tracker reserved for bug reports and feature requests.
 
 For general questions please use the gitter channel or the Ethereum stack exchange at https://ethereum.stackexchange.com.
 

.gitignore

@@ -24,6 +24,7 @@ build/_vendor/pkg
 
 # used by the Makefile
 /build/_workspace/
+/build/cache/
 /build/bin/
 /geth*.zip
 
@@ -42,6 +43,7 @@ profile.cov
 /dashboard/assets/node_modules
 /dashboard/assets/stats.json
 /dashboard/assets/bundle.js
+/dashboard/assets/bundle.js.map
 /dashboard/assets/package-lock.json
 
 **/yarn-error.log

.golangci.yml

@@ -0,0 +1,45 @@
+# This file configures github.com/golangci/golangci-lint.
+
+run:
+  timeout: 2m
+  tests: true
+  # default is true. Enables skipping of directories:
+  #   vendor$, third_party$, testdata$, examples$, Godeps$, builtin$
+  skip-dirs-use-default: true
+
+linters:
+  disable-all: true
+  enable:
+    - deadcode
+    - goconst
+    - goimports
+    - gosimple
+    - govet
+    - ineffassign
+    - misspell
+    # - staticcheck
+    - unconvert
+    # - unused
+    - varcheck
+
+linters-settings:
+  gofmt:
+    simplify: true
+  goconst:
+    min-len: 3 # minimum length of string constant
+    min-occurrences: 6 # minimum number of occurrences
+
+issues:
+  exclude-rules:
+    - path: crypto/blake2b/
+      linters:
+        - deadcode
+    - path: crypto/bn256/cloudflare
+      linters:
+        - deadcode
+    - path: p2p/discv5/
+      linters:
+        - deadcode
+    - path: core/vm/instructions_test.go
+      linters:
+        - goconst

.travis.yml

@@ -1,33 +1,63 @@
 language: go
-go_import_path: github.com/nebulaai/nbai-node
+go_import_path: github.com/ethereum/go-ethereum
 sudo: false
-matrix:
+jobs:
   include:
-    - os: linux
-      dist: trusty
-      sudo: required
-      go: 1.10.x
+        # This builder only tests code linters on latest version of Go
+    - stage: lint
+      os: linux
+      dist: xenial
+      go: 1.13.x
+      env:
+        - lint
+      git:
+        submodules: false # avoid cloning ethereum/tests
       script:
-      - sudo modprobe fuse
-      - sudo chmod 666 /dev/fuse
-      - sudo chown root:$USER /etc/fuse.conf
-      - go run build/ci.go install
-      - go run build/ci.go test -coverage $TEST_PACKAGES
+        - go run build/ci.go lint
 
-    # These are the latest Go versions.
-    - os: linux
-      dist: trusty
-      sudo: required
+    - stage: build
+      os: linux
+      dist: xenial
       go: 1.11.x
+      env:
+        - GO111MODULE=on
       script:
-        - sudo modprobe fuse
-        - sudo chmod 666 /dev/fuse
-        - sudo chown root:$USER /etc/fuse.conf
         - go run build/ci.go install
         - go run build/ci.go test -coverage $TEST_PACKAGES
 
-    - os: osx
-      go: 1.11.x
+    - stage: build
+      os: linux
+      dist: xenial
+      go: 1.12.x
+      env:
+        - GO111MODULE=on
+      script:
+        - go run build/ci.go install
+        - go run build/ci.go test -coverage $TEST_PACKAGES
+
+    # These are the latest Go versions.
+    - stage: build
+      os: linux
+      arch: amd64
+      dist: xenial
+      go: 1.13.x
+      script:
+        - go run build/ci.go install
+        - go run build/ci.go test -coverage $TEST_PACKAGES
+
+    - stage: build
+      if: type = pull_request
+      os: linux
+      arch: arm64
+      dist: xenial
+      go: 1.13.x
+      script:
+        - go run build/ci.go install
+        - go run build/ci.go test -coverage $TEST_PACKAGES
+
+    - stage: build
+      os: osx
+      go: 1.13.x
       script:
         - echo "Increase the maximum number of open file descriptors on macOS"
         - NOFILE=20480
@@ -41,22 +71,12 @@ matrix:
         - go run build/ci.go install
         - go run build/ci.go test -coverage $TEST_PACKAGES
 
-    # This builder only tests code linters on latest version of Go
-    - os: linux
-      dist: trusty
-      go: 1.11.x
-      env:
-        - lint
-      git:
-        submodules: false # avoid cloning ethereum/tests
-      script:
-        - go run build/ci.go lint
-
     # This builder does the Ubuntu PPA upload
-    - if: type = push
+    - stage: build
+      if: type = push
       os: linux
-      dist: trusty
-      go: 1.11.x
+      dist: xenial
+      go: 1.13.x
       env:
         - ubuntu-ppa
       git:
@@ -68,15 +88,19 @@ matrix:
             - debhelper
             - dput
             - fakeroot
+            - python-bzrlib
+            - python-paramiko
       script:
-        - go run build/ci.go debsrc -signer "Go Ethereum Linux Builder <[email protected]>" -upload ppa:ethereum/ethereum
+        - echo '|1|7SiYPr9xl3uctzovOTj4gMwAC1M=|t6ReES75Bo/PxlOPJ6/GsGbTrM0= ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA0aKz5UTUndYgIGG7dQBV+HaeuEZJ2xPHo2DS2iSKvUL4xNMSAY4UguNW+pX56nAQmZKIZZ8MaEvSj6zMEDiq6HFfn5JcTlM80UwlnyKe8B8p7Nk06PPQLrnmQt5fh0HmEcZx+JU9TZsfCHPnX7MNz4ELfZE6cFsclClrKim3BHUIGq//t93DllB+h4O9LHjEUsQ1Sr63irDLSutkLJD6RXchjROXkNirlcNVHH/jwLWR5RcYilNX7S5bIkK8NlWPjsn/8Ua5O7I9/YoE97PpO6i73DTGLh5H9JN/SITwCKBkgSDWUt61uPK3Y11Gty7o2lWsBjhBUm2Y38CBsoGmBw==' >> ~/.ssh/known_hosts
+        - go run build/ci.go debsrc -goversion 1.13.4 -upload ethereum/ethereum -sftp-user geth-ci -signer "Go Ethereum Linux Builder <[email protected]>"
 
     # This builder does the Linux Azure uploads
-    - if: type = push
+    - stage: build
+      if: type = push
       os: linux
-      dist: trusty
+      dist: xenial
       sudo: required
-      go: 1.11.x
+      go: 1.13.x
       env:
         - azure-linux
       git:
@@ -106,12 +130,13 @@ matrix:
         - go run build/ci.go archive -arch arm64 -type tar -signer LINUX_SIGNING_KEY -upload gethstore/builds
 
     # This builder does the Linux Azure MIPS xgo uploads
-    - if: type = push
+    - stage: build
+      if: type = push
       os: linux
-      dist: trusty
+      dist: xenial
       services:
         - docker
-      go: 1.11.x
+      go: 1.13.x
       env:
         - azure-linux-mips
       git:
@@ -134,9 +159,10 @@ matrix:
         - go run build/ci.go archive -arch mips64le -type tar -signer LINUX_SIGNING_KEY -upload gethstore/builds
 
     # This builder does the Android Maven and Azure uploads
-    - if: type = push
+    - stage: build
+      if: type = push
       os: linux
-      dist: trusty
+      dist: xenial
       addons:
         apt:
           packages:
@@ -156,25 +182,25 @@ matrix:
       git:
         submodules: false # avoid cloning ethereum/tests
       before_install:
-        - curl https://storage.googleapis.com/golang/go1.11.4.linux-amd64.tar.gz | tar -xz
+        - curl https://dl.google.com/go/go1.13.linux-amd64.tar.gz | tar -xz
         - export PATH=`pwd`/go/bin:$PATH
         - export GOROOT=`pwd`/go
         - export GOPATH=$HOME/go
       script:
         # Build the Android archive and upload it to Maven Central and Azure
-        - curl https://dl.google.com/android/repository/android-ndk-r17b-linux-x86_64.zip -o android-ndk-r17b.zip
-        - unzip -q android-ndk-r17b.zip && rm android-ndk-r17b.zip
-        - mv android-ndk-r17b $HOME
-        - export ANDROID_NDK=$HOME/android-ndk-r17b
+        - curl https://dl.google.com/android/repository/android-ndk-r19b-linux-x86_64.zip -o android-ndk-r19b.zip
+        - unzip -q android-ndk-r19b.zip && rm android-ndk-r19b.zip
+        - mv android-ndk-r19b $ANDROID_HOME/ndk-bundle
 
         - mkdir -p $GOPATH/src/github.com/ethereum
-        - ln -s `pwd` $GOPATH/src/github.com/ethereum
+        - ln -s `pwd` $GOPATH/src/github.com/ethereum/go-ethereum
         - go run build/ci.go aar -signer ANDROID_SIGNING_KEY -deploy https://oss.sonatype.org -upload gethstore/builds
 
     # This builder does the OSX Azure, iOS CocoaPods and iOS Azure uploads
-    - if: type = push
+    - stage: build
+      if: type = push
       os: osx
-      go: 1.11.x
+      go: 1.13.x
       env:
         - azure-osx
         - azure-ios
@@ -201,10 +227,11 @@ matrix:
         - go run build/ci.go xcode -signer IOS_SIGNING_KEY -deploy trunk -upload gethstore/builds
 
     # This builder does the Azure archive purges to avoid accumulating junk
-    - if: type = cron
+    - stage: build
+      if: type = cron
       os: linux
-      dist: trusty
-      go: 1.11.x
+      dist: xenial
+      go: 1.13.x
       env:
         - azure-purge
       git: