TrueCloudLab/frostfs-locode-db
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[#7] Add local tool for building database file #11

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realloc merged 4 commits from george.bartolomey/frostfs-locode-db:feature-local-util into master 2024-09-04 19:50:57 +00:00
Conversation 4 Commits 4 Files changed 38 +2317 -4
30 changed files with 2317 additions and 4 deletions
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19
Makefile Normal file → Executable file
View file

@ -1,7 +1,7 @@
#!/usr/bin/make -f #!/usr/bin/make -f
VERSION ?= "$(shell git describe --tags --match "v*" --dirty --always --abbrev=8 2>/dev/null || cat VERSION 2>/dev/null || echo "develop")" VERSION ?= "$(shell git describe --tags --match "v*" --dirty --always --abbrev=8 2>/dev/null || cat VERSION 2>/dev/null || echo "develop")"
FROST ?= frostfs-cli FROST_LOCODE = ./frostfs-locode-db
.PHONY: all clean version help update debpackage .PHONY: all clean version help update debpackage
@ -17,7 +17,10 @@ PKG_VERSION ?= $(shell echo $(VERSION) | sed "s/^v//" | \
sed "s/-/~/")-${OS_RELEASE} sed "s/-/~/")-${OS_RELEASE}
# Generate locode_db BoltDB file # Generate locode_db BoltDB file
all: $(DIRS) locode_db all: $(DIRS) $(FROST_LOCODE) locode_db
$(FROST_LOCODE):
go build .
$(DIRS): $(DIRS):
@echo "⇒ Ensure dir: $@" @echo "⇒ Ensure dir: $@"
@ -39,8 +42,8 @@ in/unlocode-CodeList.csv: $(DIRS)
zcat data/unlocode-CodeList.csv.gz > in/unlocode-CodeList.csv zcat data/unlocode-CodeList.csv.gz > in/unlocode-CodeList.csv
# Generate locode_db BoltDB file # Generate locode_db BoltDB file
locode_db: in/unlocode-CodeList.csv in/unlocode-SubdivisionCodes.csv in/continents.geojson in/airports.dat in/countries.dat locode_db: in/unlocode-CodeList.csv in/unlocode-SubdivisionCodes.csv in/continents.geojson in/airports.dat in/countries.dat $(FROST_LOCODE)
$(FROST) util locode generate \ $(FROST_LOCODE) generate \
--airports in/airports.dat \ --airports in/airports.dat \
--continents in/continents.geojson \ --continents in/continents.geojson \
--countries in/countries.dat \ --countries in/countries.dat \
@ -91,6 +94,13 @@ help:
@echo '' @echo ''
@awk '/^#/{ comment = substr($$0,3) } comment && /^[a-zA-Z][a-zA-Z0-9_-]+ ?:/{ print " ", $$1, comment }' $(MAKEFILE_LIST) | column -t -s ':' | grep -v 'IGNORE' | sort -u @awk '/^#/{ comment = substr($$0,3) } comment && /^[a-zA-Z][a-zA-Z0-9_-]+ ?:/{ print " ", $$1, comment }' $(MAKEFILE_LIST) | column -t -s ':' | grep -v 'IGNORE' | sort -u
# Run tests
test: locode_db
test -n "$$($(FROST_LOCODE) info --db locode_db --locode "US NYC" 2>&1 | grep "New York")"
test -n "$$($(FROST_LOCODE) info --db locode_db --locode "RU LED" 2>&1 | grep "Leningrad")"
test -n "$$($(FROST_LOCODE) info --db locode_db --locode "RU KUF" 2>&1 | grep "Samara")"
test -n "$$($(FROST_LOCODE) info --db locode_db --locode "VN DAN" 2>&1 | grep "Binh Hoa")"
test -n "$$($(FROST_LOCODE) info --db locode_db --locode "FR PAR" 2>&1 | grep "Paris")"
# Clean data directory before update # Clean data directory before update
clean_data: clean_data:
@ -104,6 +114,7 @@ clean:
rm -f in/* rm -f in/*
rm -f tmp/* rm -f tmp/*
rm -f locode_db rm -f locode_db
rm -f $(FROST_LOCODE)
# Package for Debian # Package for Debian
debpackage: debpackage:

21
go.mod Normal file
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@ -0,0 +1,21 @@
module git.frostfs.info/TrueCloudLab/frostfs-locode-db
go 1.21
george.bartolomey marked this conversation as resolved Outdated
acid-ant commented 2024-07-09 09:05:01 +00:00
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Let's use the same version as in frostfs-node repo.

Let's use the same version as in `frostfs-node` repo.
george.bartolomey commented 2024-07-09 15:55:53 +00:00
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Thank you, I fixed it.

Thank you, I fixed it.
george.bartolomey commented 2024-07-10 07:34:28 +00:00
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Oh, in README.md i found the requirement of Go 1.22.4.

Oh, in README.md i found the requirement of Go 1.22.4.
require (
github.com/paulmach/orb v0.11.1
github.com/spf13/cobra v1.8.1
github.com/stretchr/testify v1.9.0
go.etcd.io/bbolt v1.3.10
golang.org/x/sync v0.7.0
)
require (
github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
github.com/inconshreveable/mousetrap v1.1.0 // indirect
github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
github.com/spf13/pflag v1.0.5 // indirect
go.mongodb.org/mongo-driver v1.13.1 // indirect
golang.org/x/sys v0.18.0 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
)

110
go.sum Normal file
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@ -0,0 +1,110 @@
github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
github.com/klauspost/compress v1.13.6/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk=
github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe/go.mod h1:wL8QJuTMNUDYhXwkmfOly8iTdp5TEcJFWZD2D7SIkUc=
github.com/paulmach/orb v0.11.1 h1:3koVegMC4X/WeiXYz9iswopaTwMem53NzTJuTF20JzU=
github.com/paulmach/orb v0.11.1/go.mod h1:5mULz1xQfs3bmQm63QEJA6lNGujuRafwA5S/EnuLaLU=
github.com/paulmach/protoscan v0.2.1/go.mod h1:SpcSwydNLrxUGSDvXvO0P7g7AuhJ7lcKfDlhJCDw2gY=
github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U=
github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
github.com/spf13/cobra v1.8.1 h1:e5/vxKd/rZsfSJMUX1agtjeTDf+qv1/JdBF8gg5k9ZM=
github.com/spf13/cobra v1.8.1/go.mod h1:wHxEcudfqmLYa8iTfL+OuZPbBZkmvliBWKIezN3kD9Y=
github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
github.com/tidwall/pretty v1.0.0/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhVysOjyk=
github.com/xdg-go/pbkdf2 v1.0.0/go.mod h1:jrpuAogTd400dnrH08LKmI/xc1MbPOebTwRqcT5RDeI=
github.com/xdg-go/scram v1.1.1/go.mod h1:RaEWvsqvNKKvBPvcKeFjrG2cJqOkHTiyTpzz23ni57g=
github.com/xdg-go/scram v1.1.2/go.mod h1:RT/sEzTbU5y00aCK8UOx6R7YryM0iF1N2MOmC3kKLN4=
github.com/xdg-go/stringprep v1.0.3/go.mod h1:W3f5j4i+9rC0kuIEJL0ky1VpHXQU3ocBgklLGvcBnW8=
github.com/xdg-go/stringprep v1.0.4/go.mod h1:mPGuuIYwz7CmR2bT9j4GbQqutWS1zV24gijq1dTyGkM=
github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d/go.mod h1:rHwXgn7JulP+udvsHwJoVG1YGAP6VLg4y9I5dyZdqmA=
github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
go.etcd.io/bbolt v1.3.10 h1:+BqfJTcCzTItrop8mq/lbzL8wSGtj94UO/3U31shqG0=
go.etcd.io/bbolt v1.3.10/go.mod h1:bK3UQLPJZly7IlNmV7uVHJDxfe5aK9Ll93e/74Y9oEQ=
go.mongodb.org/mongo-driver v1.11.4/go.mod h1:PTSz5yu21bkT/wXpkS7WR5f0ddqw5quethTUn9WM+2g=
go.mongodb.org/mongo-driver v1.13.1 h1:YIc7HTYsKndGK4RFzJ3covLz1byri52x0IoMB0Pt/vk=
go.mongodb.org/mongo-driver v1.13.1/go.mod h1:wcDf1JBCXy2mOW0bWHwO/IOYqdca1MPCwDtFu/Z9+eo=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

96
locode_generate.go Normal file
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package main
import (
locodedb "git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode/db"
airportsdb "git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode/db/airports"
locodebolt "git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode/db/boltdb"
continentsdb "git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode/db/continents/geojson"
csvlocode "git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode/table/csv"
"github.com/spf13/cobra"
)
type namesDB struct {
*airportsdb.DB
*csvlocode.Table
}
const (
locodeGenerateInputFlag = "in"
locodeGenerateSubDivFlag = "subdiv"
locodeGenerateAirportsFlag = "airports"
locodeGenerateCountriesFlag = "countries"
locodeGenerateContinentsFlag = "continents"
locodeGenerateOutputFlag = "out"
)
var (
locodeGenerateInPaths []string
locodeGenerateSubDivPath string
locodeGenerateAirportsPath string
locodeGenerateCountriesPath string
locodeGenerateContinentsPath string
locodeGenerateOutPath string
locodeGenerateCmd = &cobra.Command{
Use: "generate",
Short: "Generate UN/LOCODE database for FrostFS",
Run: func(cmd *cobra.Command, _ []string) {
locodeDB := csvlocode.New(
csvlocode.Prm{
Path: locodeGenerateInPaths[0],
SubDivPath: locodeGenerateSubDivPath,
},
csvlocode.WithExtraPaths(locodeGenerateInPaths[1:]...),
)
airportDB := airportsdb.New(airportsdb.Prm{
AirportsPath: locodeGenerateAirportsPath,
CountriesPath: locodeGenerateCountriesPath,
})
continentsDB := continentsdb.New(continentsdb.Prm{
Path: locodeGenerateContinentsPath,
})
targetDB := locodebolt.New(locodebolt.Prm{
Path: locodeGenerateOutPath,
})
err := targetDB.Open()
ExitOnErr(cmd, "", err)
defer targetDB.Close()
names := &namesDB{
DB: airportDB,
Table: locodeDB,
}
err = locodedb.FillDatabase(locodeDB, airportDB, continentsDB, names, targetDB)
ExitOnErr(cmd, "", err)
},
}
)
func initUtilLocodeGenerateCmd() {
flags := locodeGenerateCmd.Flags()
flags.StringSliceVar(&locodeGenerateInPaths, locodeGenerateInputFlag, nil, "List of paths to UN/LOCODE tables (csv)")
_ = locodeGenerateCmd.MarkFlagRequired(locodeGenerateInputFlag)
flags.StringVar(&locodeGenerateSubDivPath, locodeGenerateSubDivFlag, "", "Path to UN/LOCODE subdivision database (csv)")
_ = locodeGenerateCmd.MarkFlagRequired(locodeGenerateSubDivFlag)
flags.StringVar(&locodeGenerateAirportsPath, locodeGenerateAirportsFlag, "", "Path to OpenFlights airport database (csv)")
_ = locodeGenerateCmd.MarkFlagRequired(locodeGenerateAirportsFlag)
flags.StringVar(&locodeGenerateCountriesPath, locodeGenerateCountriesFlag, "", "Path to OpenFlights country database (csv)")
_ = locodeGenerateCmd.MarkFlagRequired(locodeGenerateCountriesFlag)
flags.StringVar(&locodeGenerateContinentsPath, locodeGenerateContinentsFlag, "", "Path to continent polygons (GeoJSON)")
_ = locodeGenerateCmd.MarkFlagRequired(locodeGenerateContinentsFlag)
flags.StringVar(&locodeGenerateOutPath, locodeGenerateOutputFlag, "", "Target path for generated database")
_ = locodeGenerateCmd.MarkFlagRequired(locodeGenerateOutputFlag)
}

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locode_info.go Normal file
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package main
import (
locodedb "git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode/db"
locodebolt "git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode/db/boltdb"
"github.com/spf13/cobra"
)
const (
locodeInfoDBFlag = "db"
locodeInfoCodeFlag = "locode"
)
var (
locodeInfoDBPath string
locodeInfoCode string
locodeInfoCmd = &cobra.Command{
Use: "info",
Short: "Print information about UN/LOCODE from FrostFS database",
Run: func(cmd *cobra.Command, _ []string) {
targetDB := locodebolt.New(locodebolt.Prm{
Path: locodeInfoDBPath,
}, locodebolt.ReadOnly())
err := targetDB.Open()
ExitOnErr(cmd, "", err)
defer targetDB.Close()
record, err := locodedb.LocodeRecord(targetDB, locodeInfoCode)
ExitOnErr(cmd, "", err)
cmd.Printf("Country: %s\n", record.CountryName())
cmd.Printf("Location: %s\n", record.LocationName())
cmd.Printf("Continent: %s\n", record.Continent())
if subDivCode := record.SubDivCode(); subDivCode != "" {
cmd.Printf("Subdivision: [%s] %s\n", subDivCode, record.SubDivName())
}
geoPoint := record.GeoPoint()
cmd.Printf("Coordinates: %0.2f, %0.2f\n", geoPoint.Latitude(), geoPoint.Longitude())
},
}
)
func initUtilLocodeInfoCmd() {
flags := locodeInfoCmd.Flags()
flags.StringVar(&locodeInfoDBPath, locodeInfoDBFlag, "", "Path to FrostFS UN/LOCODE database")
_ = locodeInfoCmd.MarkFlagRequired(locodeInfoDBFlag)
flags.StringVar(&locodeInfoCode, locodeInfoCodeFlag, "", "UN/LOCODE")
_ = locodeInfoCmd.MarkFlagRequired(locodeInfoCodeFlag)
}

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main.go Normal file
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package main
import (
"fmt"
"os"
"github.com/spf13/cobra"
)
var rootCmd = &cobra.Command{
Use: "frostfs-locode-db",
Short: "Command Line Tool to work with FrostFS' UN/LOCODE databases",
Long: "This tool can be used for generating or accessing FrostFS UN/LOCODE databases.",
}
func ExitOnErr(cmd *cobra.Command, errFmt string, err error) {
if err == nil {
return
}
if errFmt != "" {
err = fmt.Errorf(errFmt, err)
}
const (
_ = iota
internal
aclDenied
)
cmd.PrintErrln(err)
if cmd.PersistentPostRun != nil {
cmd.PersistentPostRun(cmd, nil)
}
os.Exit(internal)
}
func main() {
initUtilLocodeGenerateCmd()
initUtilLocodeInfoCmd()
rootCmd.AddCommand(locodeGenerateCmd, locodeInfoCmd)
err := rootCmd.Execute()
if err != nil {
ExitOnErr(rootCmd, "", err)
}
}

193
pkg/locode/column/coordinates.go Normal file
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package locodecolumn
import (
"fmt"
"strings"
"git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode"
)
const (
minutesDigits = 2
hemisphereSymbols = 1
)
const (
latDegDigits = 2
lngDegDigits = 3
)
type coordinateCode struct {
degDigits int
value []uint8
}
// LongitudeCode represents the value of the longitude
// of the location conforming to UN/LOCODE specification.
type LongitudeCode coordinateCode
// LongitudeHemisphere represents the hemisphere of the earth
// // along the Greenwich meridian.
type LongitudeHemisphere [hemisphereSymbols]uint8
// LatitudeCode represents the value of the latitude
// of the location conforming to UN/LOCODE specification.
type LatitudeCode coordinateCode
// LatitudeHemisphere represents the hemisphere of the earth
// along the equator.
type LatitudeHemisphere [hemisphereSymbols]uint8
func coordinateFromString(s string, degDigits int, hemisphereAlphabet []uint8) (*coordinateCode, error) {
if len(s) != degDigits+minutesDigits+hemisphereSymbols {
return nil, locode.ErrInvalidString
}
for i := range s[:degDigits+minutesDigits] {
if !isDigit(s[i]) {
return nil, locode.ErrInvalidString
}
}
loop:
for _, sym := range s[degDigits+minutesDigits:] {
for j := range hemisphereAlphabet {
if hemisphereAlphabet[j] == uint8(sym) {
continue loop
}
}
return nil, locode.ErrInvalidString
}
return &coordinateCode{
degDigits: degDigits,
value: []uint8(s),
}, nil
}
// LongitudeFromString parses a string and returns the location's longitude.
func LongitudeFromString(s string) (*LongitudeCode, error) {
cc, err := coordinateFromString(s, lngDegDigits, []uint8{'W', 'E'})
if err != nil {
return nil, err
}
return (*LongitudeCode)(cc), nil
}
// LatitudeFromString parses a string and returns the location's latitude.
func LatitudeFromString(s string) (*LatitudeCode, error) {
cc, err := coordinateFromString(s, latDegDigits, []uint8{'N', 'S'})
if err != nil {
return nil, err
}
return (*LatitudeCode)(cc), nil
}
func (cc *coordinateCode) degrees() []uint8 {
return cc.value[:cc.degDigits]
}
// Degrees returns the longitude's degrees.
func (lc *LongitudeCode) Degrees() (l [lngDegDigits]uint8) {
copy(l[:], (*coordinateCode)(lc).degrees())
return
}
// Degrees returns the latitude's degrees.
func (lc *LatitudeCode) Degrees() (l [latDegDigits]uint8) {
copy(l[:], (*coordinateCode)(lc).degrees())
return
}
func (cc *coordinateCode) minutes() (mnt [minutesDigits]uint8) {
for i := 0; i < minutesDigits; i++ {
mnt[i] = cc.value[cc.degDigits+i]
}
return
}
// Minutes returns the longitude's minutes.
func (lc *LongitudeCode) Minutes() [minutesDigits]uint8 {
return (*coordinateCode)(lc).minutes()
}
// Minutes returns the latitude's minutes.
func (lc *LatitudeCode) Minutes() [minutesDigits]uint8 {
return (*coordinateCode)(lc).minutes()
}
// Hemisphere returns the longitude's hemisphere code.
func (lc *LongitudeCode) Hemisphere() LongitudeHemisphere {
return (*coordinateCode)(lc).hemisphere()
}
// Hemisphere returns the latitude's hemisphere code.
func (lc *LatitudeCode) Hemisphere() LatitudeHemisphere {
return (*coordinateCode)(lc).hemisphere()
}
func (cc *coordinateCode) hemisphere() (h [hemisphereSymbols]uint8) {
for i := 0; i < hemisphereSymbols; i++ {
h[i] = cc.value[cc.degDigits+minutesDigits+i]
}
return h
}
// North returns true for the northern hemisphere.
func (h LatitudeHemisphere) North() bool {
return h[0] == 'N'
}
// East returns true for the eastern hemisphere.
func (h LongitudeHemisphere) East() bool {
return h[0] == 'E'
}
// Coordinates represents the coordinates of the location from UN/LOCODE table.
type Coordinates struct {
lat *LatitudeCode
lng *LongitudeCode
}
// Latitude returns the location's latitude.
func (c *Coordinates) Latitude() *LatitudeCode {
return c.lat
}
// Longitude returns the location's longitude.
func (c *Coordinates) Longitude() *LongitudeCode {
return c.lng
}
// CoordinatesFromString parses a string and returns the location's coordinates.
func CoordinatesFromString(s string) (*Coordinates, error) {
if len(s) == 0 {
return nil, nil
}
strs := strings.Split(s, " ")
if len(strs) != 2 {
return nil, locode.ErrInvalidString
}
lat, err := LatitudeFromString(strs[0])
if err != nil {
return nil, fmt.Errorf("could not parse latitude: %w", err)
}
lng, err := LongitudeFromString(strs[1])
if err != nil {
return nil, fmt.Errorf("could not parse longitude: %w", err)
}
return &Coordinates{
lat: lat,
lng: lng,
}, nil
}

38
pkg/locode/column/country.go Normal file
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package locodecolumn
import (
"fmt"
"git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode"
)
const countryCodeLen = 2
// CountryCode represents ISO 3166 alpha-2 Country Code.
type CountryCode [countryCodeLen]uint8
// Symbols returns digits of the country code.
func (cc *CountryCode) Symbols() [countryCodeLen]uint8 {
return *cc
}
// CountryCodeFromString parses a string and returns the country code.
func CountryCodeFromString(s string) (*CountryCode, error) {
if l := len(s); l != countryCodeLen {
return nil, fmt.Errorf("incorrect country code length: expect: %d, got: %d",
countryCodeLen,
l,
)
}
for i := range s {
if !isUpperAlpha(s[i]) {
return nil, locode.ErrInvalidString
}
}
cc := CountryCode{}
copy(cc[:], s)
return &cc, nil
}

38
pkg/locode/column/location.go Normal file
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package locodecolumn
import (
"fmt"
"git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode"
)
const locationCodeLen = 3
// LocationCode represents 3-character code for the location.
type LocationCode [locationCodeLen]uint8
// Symbols returns characters of the location code.
func (lc *LocationCode) Symbols() [locationCodeLen]uint8 {
return *lc
}
// LocationCodeFromString parses a string and returns the location code.
func LocationCodeFromString(s string) (*LocationCode, error) {
if l := len(s); l != locationCodeLen {
return nil, fmt.Errorf("incorrect location code length: expect: %d, got: %d",
locationCodeLen,
l,
)
}
for i := range s {
if !isUpperAlpha(s[i]) && !isDigit(s[i]) {
return nil, locode.ErrInvalidString
}
}
lc := LocationCode{}
copy(lc[:], s)
return &lc, nil
}

9
pkg/locode/column/util.go Normal file
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package locodecolumn
func isDigit(sym uint8) bool {
return sym >= '0' && sym <= '9'
}
func isUpperAlpha(sym uint8) bool {
return sym >= 'A' && sym <= 'Z'
}

194
pkg/locode/db/airports/calls.go Normal file
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package airportsdb
import (
"encoding/csv"
"errors"
"fmt"
"io"
"os"
"strconv"
"git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode"
locodedb "git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode/db"
)
const (
_ = iota - 1
_ // Airport ID
_ // Name
airportCity
airportCountry
airportIATA
_ // ICAO
airportLatitude
airportLongitude
_ // Altitude
_ // Timezone
_ // DST
_ // Tz database time zone
_ // Type
_ // Source
airportFldNum
)
type record struct {
city,
country,
iata,
lat,
lng string
}
// Get scans the records of the OpenFlights Airport to an in-memory table (once),
// and returns an entry that matches the passed UN/LOCODE record.
//
// Records are matched if they have the same country code and either
// same IATA code or same city name (location name in UN/LOCODE).
//
// Returns locodedb.ErrAirportNotFound if no entry matches.
func (db *DB) Get(locodeRecord locode.Record) (*locodedb.AirportRecord, error) {
if err := db.initAirports(); err != nil {
return nil, err
}
records := db.mAirports[locodeRecord.LOCODE.CountryCode()]
for i := range records {
if locodeRecord.LOCODE.LocationCode() != records[i].iata &&
locodeRecord.NameWoDiacritics != records[i].city {
continue
}
lat, err := strconv.ParseFloat(records[i].lat, 64)
if err != nil {
return nil, err
}
lng, err := strconv.ParseFloat(records[i].lng, 64)
if err != nil {
return nil, err
}
return &locodedb.AirportRecord{
CountryName: records[i].country,
Point: locodedb.NewPoint(lat, lng),
}, nil
}
return nil, locodedb.ErrAirportNotFound
}
const (
_ = iota - 1
countryName
countryISOCode
_ // dafif_code
countryFldNum
)
// CountryName scans the records of the OpenFlights Country table to an in-memory table (once),
// and returns the name of the country by code.
//
// Returns locodedb.ErrCountryNotFound if no entry matches.
func (db *DB) CountryName(code *locodedb.CountryCode) (name string, err error) {
if err = db.initCountries(); err != nil {
return
}
argCode := code.String()
for cName, cCode := range db.mCountries {
if cCode == argCode {
name = cName
break
}
}
if name == "" {
err = locodedb.ErrCountryNotFound
}
return
}
func (db *DB) initAirports() (err error) {
db.airportsOnce.Do(func() {
db.mAirports = make(map[string][]record)
if err = db.initCountries(); err != nil {
return
}
err = db.scanWords(db.airports, airportFldNum, func(words []string) error {
countryCode := db.mCountries[words[airportCountry]]
if countryCode != "" {
db.mAirports[countryCode] = append(db.mAirports[countryCode], record{
city: words[airportCity],
country: words[airportCountry],
iata: words[airportIATA],
lat: words[airportLatitude],
lng: words[airportLongitude],
})
}
return nil
})
})
return
}
func (db *DB) initCountries() (err error) {
db.countriesOnce.Do(func() {
db.mCountries = make(map[string]string)
err = db.scanWords(db.countries, countryFldNum, func(words []string) error {
db.mCountries[words[countryName]] = words[countryISOCode]
return nil
})
})
return
}
var errScanInt = errors.New("interrupt scan")
func (db *DB) scanWords(pm pathMode, num int, wordsHandler func([]string) error) error {
tableFile, err := os.OpenFile(pm.path, os.O_RDONLY, pm.mode)
if err != nil {
return err
}
defer tableFile.Close()
r := csv.NewReader(tableFile)
r.ReuseRecord = true
for {
words, err := r.Read()
if err != nil {
if errors.Is(err, io.EOF) {
break
}
return err
} else if ln := len(words); ln != num {
return fmt.Errorf("unexpected number of words %d", ln)
}
if err := wordsHandler(words); err != nil {
if errors.Is(err, errScanInt) {
break
}
return err
}
}
return nil
}

83
pkg/locode/db/airports/db.go Normal file
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package airportsdb
import (
"fmt"
"io/fs"
"sync"
)
// Prm groups the required parameters of the DB's constructor.
//
// All values must comply with the requirements imposed on them.
// Passing incorrect parameter values will result in constructor
// failure (error or panic depending on the implementation).
type Prm struct {
// Path to OpenFlights Airport csv table.
//
// Must not be empty.
AirportsPath string
// Path to OpenFlights Countries csv table.
//
// Must not be empty.
CountriesPath string
}
// DB is a descriptor of the OpenFlights database in csv format.
//
// For correct operation, DB must be created
// using the constructor (New) based on the required parameters
// and optional components. After successful creation,
// The DB is immediately ready to work through API.
type DB struct {
airports, countries pathMode
airportsOnce, countriesOnce sync.Once
mCountries map[string]string
mAirports map[string][]record
}
type pathMode struct {
path string
mode fs.FileMode
}
const invalidPrmValFmt = "invalid parameter %s (%T):%v"
func panicOnPrmValue(n string, v any) {
panic(fmt.Sprintf(invalidPrmValFmt, n, v, v))
}
// New creates a new instance of the DB.
//
// Panics if at least one value of the parameters is invalid.
//
// The created DB does not require additional
// initialization and is completely ready for work.
func New(prm Prm, opts ...Option) *DB {
switch {
case prm.AirportsPath == "":
panicOnPrmValue("AirportsPath", prm.AirportsPath)
case prm.CountriesPath == "":
panicOnPrmValue("CountriesPath", prm.CountriesPath)
}
o := defaultOpts()
for i := range opts {
opts[i](o)
}
return &DB{
airports: pathMode{
path: prm.AirportsPath,
mode: o.airportMode,
},
countries: pathMode{
path: prm.CountriesPath,
mode: o.countryMode,
},
}
}

19
pkg/locode/db/airports/opts.go Normal file
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package airportsdb
import (
"io/fs"
)
// Option sets an optional parameter of DB.
type Option func(*options)
type options struct {
airportMode, countryMode fs.FileMode
}
func defaultOpts() *options {
return &options{
airportMode: fs.ModePerm, // 0777
countryMode: fs.ModePerm, // 0777
}
}

166
pkg/locode/db/boltdb/calls.go Normal file
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package locodebolt
import (
"encoding/json"
"errors"
"fmt"
"os"
"path/filepath"
locodedb "git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode/db"
"go.etcd.io/bbolt"
)
// Open opens an underlying BoltDB instance.
//
// Timeout of BoltDB opening is 3s (only for Linux or Darwin).
//
// Opens BoltDB in read-only mode if DB is read-only.
func (db *DB) Open() error {
// copy-paste from metabase:
// consider universal Open/Close for BoltDB wrappers
err := os.MkdirAll(filepath.Dir(db.path), db.mode|0o110)
if err != nil {
return fmt.Errorf("could not create dir for BoltDB: %w", err)
}
db.bolt, err = bbolt.Open(db.path, db.mode, db.boltOpts)
if err != nil {
return fmt.Errorf("could not open BoltDB: %w", err)
}
return nil
}
// Close closes an underlying BoltDB instance.
//
// Must not be called before successful Open call.
func (db *DB) Close() error {
return db.bolt.Close()
}
func countryBucketKey(cc *locodedb.CountryCode) ([]byte, error) {
return []byte(cc.String()), nil
}
func locationBucketKey(lc *locodedb.LocationCode) ([]byte, error) {
return []byte(lc.String()), nil
}
type recordJSON struct {
CountryName string
LocationName string
SubDivName string
SubDivCode string
Latitude float64
Longitude float64
Continent string
}
func recordValue(r locodedb.Record) ([]byte, error) {
p := r.GeoPoint()
rj := &recordJSON{
CountryName: r.CountryName(),
LocationName: r.LocationName(),
SubDivName: r.SubDivName(),
SubDivCode: r.SubDivCode(),
Latitude: p.Latitude(),
Longitude: p.Longitude(),
Continent: r.Continent().String(),
}
return json.Marshal(rj)
}
func recordFromValue(data []byte) (*locodedb.Record, error) {
rj := new(recordJSON)
if err := json.Unmarshal(data, rj); err != nil {
return nil, err
}
r := new(locodedb.Record)
r.SetCountryName(rj.CountryName)
r.SetLocationName(rj.LocationName)
r.SetSubDivName(rj.SubDivName)
r.SetSubDivCode(rj.SubDivCode)
r.SetGeoPoint(locodedb.NewPoint(rj.Latitude, rj.Longitude))
cont := locodedb.ContinentFromString(rj.Continent)
r.SetContinent(&cont)
return r, nil
}
// Put saves the record by key in an underlying BoltDB instance.
//
// Country code from the key is used for allocating the 1st level buckets.
// Records are stored in country buckets by the location code from the key.
// The records are stored in internal binary JSON format.
//
// Must not be called before successful Open call.
// Must not be called in read-only mode: behavior is undefined.
func (db *DB) Put(key locodedb.Key, rec locodedb.Record) error {
return db.bolt.Batch(func(tx *bbolt.Tx) error {
countryKey, err := countryBucketKey(key.CountryCode())
if err != nil {
return err
}
bktCountry, err := tx.CreateBucketIfNotExists(countryKey)
if err != nil {
return fmt.Errorf("could not create country bucket: %w", err)
}
locationKey, err := locationBucketKey(key.LocationCode())
if err != nil {
return err
}
cont, err := recordValue(rec)
if err != nil {
return err
}
return bktCountry.Put(locationKey, cont)
})
}
var errRecordNotFound = errors.New("record not found")
// Get reads the record by key from underlying BoltDB instance.
//
// Returns an error if no record is presented by key in DB.
//
// Must not be called before successful Open call.
func (db *DB) Get(key locodedb.Key) (rec *locodedb.Record, err error) {
err = db.bolt.View(func(tx *bbolt.Tx) error {
countryKey, err := countryBucketKey(key.CountryCode())
if err != nil {
return err
}
bktCountry := tx.Bucket(countryKey)
if bktCountry == nil {
return errRecordNotFound
}
locationKey, err := locationBucketKey(key.LocationCode())
if err != nil {
return err
}
data := bktCountry.Get(locationKey)
if data == nil {
return errRecordNotFound
}
rec, err = recordFromValue(data)
return err
})
return
}

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package locodebolt
import (
"fmt"
"io/fs"
"go.etcd.io/bbolt"
)
// Prm groups the required parameters of the DB's constructor.
//
// All values must comply with the requirements imposed on them.
// Passing incorrect parameter values will result in constructor
// failure (error or panic depending on the implementation).
type Prm struct {
// Path to BoltDB file with FrostFS location database.
//
// Must not be empty.
Path string
}
// DB is a descriptor of the FrostFS BoltDB location database.
//
// For correct operation, DB must be created
// using the constructor (New) based on the required parameters
// and optional components.
//
// After successful creation,
// DB must be opened through Open call. After successful opening,
// DB is ready to work through API (until Close call).
//
// Upon completion of work with the DB, it must be closed
// by Close method.
type DB struct {
path string
mode fs.FileMode
boltOpts *bbolt.Options
bolt *bbolt.DB
}
const invalidPrmValFmt = "invalid parameter %s (%T):%v"
func panicOnPrmValue(n string, v any) {
panic(fmt.Sprintf(invalidPrmValFmt, n, v, v))
}
// New creates a new instance of the DB.
//
// Panics if at least one value of the parameters is invalid.
//
// The created DB requires calling the Open method in order
// to initialize required resources.
func New(prm Prm, opts ...Option) *DB {
switch {
case prm.Path == "":
panicOnPrmValue("Path", prm.Path)
}
o := defaultOpts()
for i := range opts {
opts[i](o)
}
return &DB{
path: prm.Path,
mode: o.mode,
boltOpts: o.boltOpts,
}
}

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package locodebolt
import (
"io/fs"
"os"
"time"
"go.etcd.io/bbolt"
)
// Option sets an optional parameter of DB.
type Option func(*options)
type options struct {
mode fs.FileMode
boltOpts *bbolt.Options
}
func defaultOpts() *options {
return &options{
mode: os.ModePerm, // 0777
boltOpts: &bbolt.Options{
Timeout: 3 * time.Second,
},
}
}
// ReadOnly enables read-only mode of the DB.
//
// Do not call DB.Put method on instances with
// this option: the behavior is undefined.
func ReadOnly() Option {
return func(o *options) {
o.boltOpts.ReadOnly = true
}
}

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pkg/locode/db/continent.go Normal file
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package locodedb
// Continent is an enumeration of Earth's continent.
type Continent uint8
const (
// ContinentUnknown is an undefined Continent value.
ContinentUnknown = iota
// ContinentEurope corresponds to Europe.
ContinentEurope
// ContinentAfrica corresponds to Africa.
ContinentAfrica
// ContinentNorthAmerica corresponds to North America.
ContinentNorthAmerica
// ContinentSouthAmerica corresponds to South America.
ContinentSouthAmerica
// ContinentAsia corresponds to Asia.
ContinentAsia
// ContinentAntarctica corresponds to Antarctica.
ContinentAntarctica
// ContinentOceania corresponds to Oceania.
ContinentOceania
)
// Is checks if c is the same continent as c2.
func (c *Continent) Is(c2 Continent) bool {
return *c == c2
}
func (c Continent) String() string {
switch c {
case ContinentUnknown:
fallthrough
default:
return "Unknown"
case ContinentEurope:
return "Europe"
case ContinentAfrica:
return "Africa"
case ContinentNorthAmerica:
return "North America"
case ContinentSouthAmerica:
return "South America"
case ContinentAsia:
return "Asia"
case ContinentAntarctica:
return "Antarctica"
case ContinentOceania:
return "Oceania"
}
}
// ContinentFromString returns Continent value
// corresponding to the passed string representation.
func ContinentFromString(str string) Continent {
switch str {
default:
return ContinentUnknown
case "Europe":
return ContinentEurope
case "Africa":
return ContinentAfrica
case "North America":
return ContinentNorthAmerica
case "South America":
return ContinentSouthAmerica
case "Asia":
return ContinentAsia
case "Antarctica":
return ContinentAntarctica
case "Oceania":
return ContinentOceania
}
}

98
pkg/locode/db/continents/geojson/calls.go Normal file
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package continentsdb
import (
"fmt"
"os"
locodedb "git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode/db"
"github.com/paulmach/orb"
"github.com/paulmach/orb/geojson"
"github.com/paulmach/orb/planar"
)
const continentProperty = "Continent"
// PointContinent goes through all polygons and returns the continent
// in which the point is located.
//
// Returns locodedb.ContinentUnknown if no entry matches.
//
// All GeoJSON feature are parsed from file once and stored in memory.
func (db *DB) PointContinent(point *locodedb.Point) (*locodedb.Continent, error) {
var err error
db.once.Do(func() {
err = db.init()
})
if err != nil {
return nil, err
}
planarPoint := orb.Point{point.Longitude(), point.Latitude()}
var (
continent string
minDst float64
)
for _, feature := range db.features {
if multiPolygon, ok := feature.Geometry.(orb.MultiPolygon); ok {
if planar.MultiPolygonContains(multiPolygon, planarPoint) {
continent = feature.Properties.MustString(continentProperty)
break
}
} else if polygon, ok := feature.Geometry.(orb.Polygon); ok {
if planar.PolygonContains(polygon, planarPoint) {
continent = feature.Properties.MustString(continentProperty)
break
}
}
distance := planar.DistanceFrom(feature.Geometry, planarPoint)
if minDst == 0 || minDst > distance {
minDst = distance
continent = feature.Properties.MustString(continentProperty)
}
}
c := continentFromString(continent)
return &c, nil
}
func (db *DB) init() error {
data, err := os.ReadFile(db.path)
if err != nil {
return fmt.Errorf("could not read data file: %w", err)
}
features, err := geojson.UnmarshalFeatureCollection(data)
if err != nil {
return fmt.Errorf("could not unmarshal GeoJSON feature collection: %w", err)
}
db.features = features.Features
return nil
}
func continentFromString(c string) locodedb.Continent {
switch c {
default:
return locodedb.ContinentUnknown
case "Africa":
return locodedb.ContinentAfrica
case "Asia":
return locodedb.ContinentAsia
case "Europe":
return locodedb.ContinentEurope
case "North America":
return locodedb.ContinentNorthAmerica
case "South America":
return locodedb.ContinentSouthAmerica
case "Antarctica":
return locodedb.ContinentAntarctica
case "Australia", "Oceania":
return locodedb.ContinentOceania
}
}

63
pkg/locode/db/continents/geojson/db.go Normal file
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package continentsdb
import (
"fmt"
"sync"
"github.com/paulmach/orb/geojson"
)
// Prm groups the required parameters of the DB's constructor.
//
// All values must comply with the requirements imposed on them.
// Passing incorrect parameter values will result in constructor
// failure (error or panic depending on the implementation).
type Prm struct {
// Path to polygons of Earth's continents in GeoJSON format.
//
// Must not be empty.
Path string
}
// DB is a descriptor of the Earth's polygons in GeoJSON format.
//
// For correct operation, DB must be created
// using the constructor (New) based on the required parameters
// and optional components. After successful creation,
// The DB is immediately ready to work through API.
type DB struct {
path string
once sync.Once
features []*geojson.Feature
}
const invalidPrmValFmt = "invalid parameter %s (%T):%v"
func panicOnPrmValue(n string, v any) {
panic(fmt.Sprintf(invalidPrmValFmt, n, v, v))
}
// New creates a new instance of the DB.
//
// Panics if at least one value of the parameters is invalid.
//
// The created DB does not require additional
// initialization and is completely ready for work.
func New(prm Prm, opts ...Option) *DB {
switch {
case prm.Path == "":
panicOnPrmValue("Path", prm.Path)
}
o := defaultOpts()
for i := range opts {
opts[i](o)
}
return &DB{
path: prm.Path,
}
}

10
pkg/locode/db/continents/geojson/opts.go Normal file
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package continentsdb
// Option sets an optional parameter of DB.
type Option func(*options)
type options struct{}
func defaultOpts() *options {
return &options{}
}

32
pkg/locode/db/country.go Normal file
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package locodedb
import (
"fmt"
locodecolumn "git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode/column"
)
// CountryCode represents a country code for
// the storage in the FrostFS location database.
type CountryCode locodecolumn.CountryCode
// CountryCodeFromString parses a string UN/LOCODE country code
// and returns a CountryCode.
func CountryCodeFromString(s string) (*CountryCode, error) {
cc, err := locodecolumn.CountryCodeFromString(s)
if err != nil {
return nil, fmt.Errorf("could not parse country code: %w", err)
}
return CountryFromColumn(cc)
}
// CountryFromColumn converts a UN/LOCODE country code to a CountryCode.
func CountryFromColumn(cc *locodecolumn.CountryCode) (*CountryCode, error) {
return (*CountryCode)(cc), nil
}
func (c *CountryCode) String() string {
syms := (*locodecolumn.CountryCode)(c).Symbols()
return string(syms[:])
}

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pkg/locode/db/db.go Normal file
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package locodedb
import (
"errors"
"fmt"
"runtime"
"git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode"
"golang.org/x/sync/errgroup"
)
// SourceTable is an interface of the UN/LOCODE table.
type SourceTable interface {
// Must iterate over all entries of the table
// and pass next entry to the handler.
//
// Must return handler's errors directly.
IterateAll(func(locode.Record) error) error
}
// DB is an interface of FrostFS location database.
type DB interface {
// Must save the record by key in the database.
Put(Key, Record) error
// Must return the record by key from the database.
Get(Key) (*Record, error)
}
// AirportRecord represents the entry in FrostFS airport database.
type AirportRecord struct {
// Name of the country where airport is located.
CountryName string
// Geo point where airport is located.
Point *Point
}
// ErrAirportNotFound is returned by AirportRecord readers
// when the required airport is not found.
var ErrAirportNotFound = errors.New("airport not found")
// AirportDB is an interface of FrostFS airport database.
type AirportDB interface {
// Must return the record by UN/LOCODE table record.
//
// Must return ErrAirportNotFound if there is no
// related airport in the database.
Get(locode.Record) (*AirportRecord, error)
}
// ContinentsDB is an interface of FrostFS continent database.
type ContinentsDB interface {
// Must return continent of the geo point.
PointContinent(*Point) (*Continent, error)
}
var ErrSubDivNotFound = errors.New("subdivision not found")
var ErrCountryNotFound = errors.New("country not found")
// NamesDB is an interface of the FrostFS location namespace.
type NamesDB interface {
// Must resolve a country code to a country name.
//
// Must return ErrCountryNotFound if there is no
// country with the provided code.
CountryName(*CountryCode) (string, error)
// Must resolve (country code, subdivision code) to
// a subdivision name.
//
// Must return ErrSubDivNotFound if either country or
// subdivision is not presented in database.
SubDivName(*CountryCode, string) (string, error)
}
// FillDatabase generates the FrostFS location database based on the UN/LOCODE table.
func FillDatabase(table SourceTable, airports AirportDB, continents ContinentsDB, names NamesDB, db DB) error {
var errG errgroup.Group
// Pick some sane default, after this the performance stopped increasing.
errG.SetLimit(runtime.NumCPU() * 4)
_ = table.IterateAll(func(tableRecord locode.Record) error {
errG.Go(func() error {
return processTableRecord(tableRecord, airports, continents, names, db)
})
return nil
})
return errG.Wait()
}
func processTableRecord(tableRecord locode.Record, airports AirportDB, continents ContinentsDB, names NamesDB, db DB) error {
if tableRecord.LOCODE.LocationCode() == "" {
return nil
}
dbKey, err := NewKey(tableRecord.LOCODE)
if err != nil {
return err
}
dbRecord, err := NewRecord(tableRecord)
if err != nil {
if errors.Is(err, errParseCoordinates) {
return nil
}
return err
}
geoPoint := dbRecord.GeoPoint()
countryName := ""
if geoPoint == nil {
airportRecord, err := airports.Get(tableRecord)
if err != nil {
if errors.Is(err, ErrAirportNotFound) {
return nil
}
return err
}
geoPoint = airportRecord.Point
countryName = airportRecord.CountryName
}
dbRecord.SetGeoPoint(geoPoint)
if countryName == "" {
countryName, err = names.CountryName(dbKey.CountryCode())
if err != nil {
if errors.Is(err, ErrCountryNotFound) {
return nil
}
return err
}
}
dbRecord.SetCountryName(countryName)
if subDivCode := dbRecord.SubDivCode(); subDivCode != "" {
subDivName, err := names.SubDivName(dbKey.CountryCode(), subDivCode)
if err != nil {
if errors.Is(err, ErrSubDivNotFound) {
return nil
}
return err
}
dbRecord.SetSubDivName(subDivName)
}
continent, err := continents.PointContinent(geoPoint)
if err != nil {
return fmt.Errorf("could not calculate continent geo point: %w", err)
} else if continent.Is(ContinentUnknown) {
return nil
}
dbRecord.SetContinent(continent)
return db.Put(*dbKey, *dbRecord)
}
// LocodeRecord returns the record from the FrostFS location database
// corresponding to the string representation of UN/LOCODE.
func LocodeRecord(db DB, sLocode string) (*Record, error) {
lc, err := locode.FromString(sLocode)
if err != nil {
return nil, fmt.Errorf("could not parse locode: %w", err)
}
key, err := NewKey(*lc)
if err != nil {
return nil, err
}
return db.Get(*key)
}

32
pkg/locode/db/location.go Normal file
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package locodedb
import (
"fmt"
locodecolumn "git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode/column"
)
// LocationCode represents a location code for
// the storage in the FrostFS location database.
type LocationCode locodecolumn.LocationCode
// LocationCodeFromString parses a string UN/LOCODE location code
// and returns a LocationCode.
func LocationCodeFromString(s string) (*LocationCode, error) {
lc, err := locodecolumn.LocationCodeFromString(s)
if err != nil {
return nil, fmt.Errorf("could not parse location code: %w", err)
}
return LocationFromColumn(lc)
}
// LocationFromColumn converts a UN/LOCODE country code to a LocationCode.
func LocationFromColumn(cc *locodecolumn.LocationCode) (*LocationCode, error) {
return (*LocationCode)(cc), nil
}
func (l *LocationCode) String() string {
syms := (*locodecolumn.LocationCode)(l).Symbols()
return string(syms[:])
}

93
pkg/locode/db/point.go Normal file
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package locodedb
import (
"fmt"
"strconv"
locodecolumn "git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode/column"
)
// Point represents a 2D geographic point.
type Point struct {
lat, lng float64
}
// NewPoint creates, initializes and returns a new Point.
func NewPoint(lat, lng float64) *Point {
return &Point{
lat: lat,
lng: lng,
}
}
// Latitude returns the Point's latitude.
func (p Point) Latitude() float64 {
return p.lat
}
// Longitude returns the Point's longitude.
func (p Point) Longitude() float64 {
return p.lng
}
// PointFromCoordinates converts a UN/LOCODE coordinates to a Point.
func PointFromCoordinates(crd *locodecolumn.Coordinates) (*Point, error) {
if crd == nil {
return nil, nil
}
cLat := crd.Latitude()
cLatDeg := cLat.Degrees()
cLatMnt := cLat.Minutes()
lat, err := toDecimal(cLatDeg[:], cLatMnt[:])
if err != nil {
return nil, fmt.Errorf("could not parse latitude: %w", err)
}
if !cLat.Hemisphere().North() {
lat = -lat
}
cLng := crd.Longitude()
cLngDeg := cLng.Degrees()
cLngMnt := cLng.Minutes()
lng, err := toDecimal(cLngDeg[:], cLngMnt[:])
if err != nil {
return nil, fmt.Errorf("could not parse longitude: %w", err)
}
if !cLng.Hemisphere().East() {
lng = -lng
}
return &Point{
lat: lat,
lng: lng,
}, nil
}
func toDecimal(intRaw, minutesRaw []byte) (float64, error) {
integer, err := strconv.ParseFloat(string(intRaw), 64)
if err != nil {
return 0, fmt.Errorf("could not parse integer part: %w", err)
}
decimal, err := minutesToDegrees(minutesRaw)
if err != nil {
return 0, fmt.Errorf("could not parse decimal part: %w", err)
}
return integer + decimal, nil
}
// minutesToDegrees converts minutes to decimal part of a degree.
func minutesToDegrees(raw []byte) (float64, error) {
minutes, err := strconv.ParseFloat(string(raw), 64)
if err != nil {
return 0, err
}
return minutes / 60, nil
}

51
pkg/locode/db/point_test.go Normal file
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package locodedb
import (
"testing"
locodecolumn "git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode/column"
"github.com/stretchr/testify/require"
)
func TestPointFromCoordinates(t *testing.T) {
testCases := []struct {
latGot, longGot string
latWant, longWant float64
}{
{
latGot: "5915N",
longGot: "01806E",
latWant: 59.25,
longWant: 18.10,
},
{
latGot: "1000N",
longGot: "02030E",
latWant: 10.00,
longWant: 20.50,
},
{
latGot: "0145S",
longGot: "03512W",
latWant: -01.75,
longWant: -35.20,
},
}
var (
crd *locodecolumn.Coordinates
point *Point
err error
)
for _, test := range testCases {
crd, err = locodecolumn.CoordinatesFromString(test.latGot + " " + test.longGot)
require.NoError(t, err)
point, err = PointFromCoordinates(crd)
require.NoError(t, err)
require.Equal(t, test.latWant, point.Latitude())
require.Equal(t, test.longWant, point.Longitude())
}
}

140
pkg/locode/db/record.go Normal file
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package locodedb
import (
"errors"
"fmt"
"git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode"
locodecolumn "git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode/column"
)
// Key represents the key in FrostFS location database.
type Key struct {
cc *CountryCode
lc *LocationCode
}
// NewKey calculates Key from LOCODE.
func NewKey(lc locode.LOCODE) (*Key, error) {
country, err := CountryCodeFromString(lc.CountryCode())
if err != nil {
return nil, fmt.Errorf("could not parse country: %w", err)
}
location, err := LocationCodeFromString(lc.LocationCode())
if err != nil {
return nil, fmt.Errorf("could not parse location: %w", err)
}
return &Key{
cc: country,
lc: location,
}, nil
}
// CountryCode returns the location's country code.
func (k *Key) CountryCode() *CountryCode {
return k.cc
}
// LocationCode returns the location code.
func (k *Key) LocationCode() *LocationCode {
return k.lc
}
// Record represents the entry in FrostFS location database.
type Record struct {
countryName string
locationName string
subDivName string
subDivCode string
p *Point
cont *Continent
}
var errParseCoordinates = errors.New("invalid coordinates")
// NewRecord calculates the Record from the UN/LOCODE table record.
func NewRecord(r locode.Record) (*Record, error) {
crd, err := locodecolumn.CoordinatesFromString(r.Coordinates)
if err != nil {
return nil, fmt.Errorf("%w: %v", errParseCoordinates, err)
}
point, err := PointFromCoordinates(crd)
if err != nil {
return nil, fmt.Errorf("could not parse geo point: %w", err)
}
return &Record{
locationName: r.NameWoDiacritics,
subDivCode: r.SubDiv,
p: point,
}, nil
}
// CountryName returns the country name.
func (r *Record) CountryName() string {
return r.countryName
}
// SetCountryName sets the country name.
func (r *Record) SetCountryName(name string) {
r.countryName = name
}
// LocationName returns the location name.
func (r *Record) LocationName() string {
return r.locationName
}
// SetLocationName sets the location name.
func (r *Record) SetLocationName(name string) {
r.locationName = name
}
// SubDivCode returns the subdivision code.
func (r *Record) SubDivCode() string {
return r.subDivCode
}
// SetSubDivCode sets the subdivision code.
func (r *Record) SetSubDivCode(name string) {
r.subDivCode = name
}
// SubDivName returns the subdivision name.
func (r *Record) SubDivName() string {
return r.subDivName
}
// SetSubDivName sets the subdivision name.
func (r *Record) SetSubDivName(name string) {
r.subDivName = name
}
// GeoPoint returns geo point of the location.
func (r *Record) GeoPoint() *Point {
return r.p
}
// SetGeoPoint sets geo point of the location.
func (r *Record) SetGeoPoint(p *Point) {
r.p = p
}
// Continent returns the location continent.
func (r *Record) Continent() *Continent {
return r.cont
}
// SetContinent sets the location continent.
func (r *Record) SetContinent(c *Continent) {
r.cont = c
}

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pkg/locode/record.go Normal file
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package locode
import (
"errors"
"fmt"
"strings"
)
// LOCODE represents code from UN/LOCODE coding scheme.
type LOCODE [2]string
// Record represents a single record of the UN/LOCODE table.
type Record struct {
// Change Indicator.
Ch string
// Combination of a 2-character country code and a 3-character location code.
LOCODE LOCODE
// Name of the locations which has been allocated a UN/LOCODE.
Name string
// Names of the locations which have been allocated a UN/LOCODE without diacritic signs.
NameWoDiacritics string
// ISO 1-3 character alphabetic and/or numeric code for the administrative division of the country concerned.
SubDiv string
// 8-digit function classifier code for the location.
Function string
// Status of the entry by a 2-character code.
Status string
// Last date when the location was updated/entered.
Date string
// The IATA code for the location if different from location code in column LOCODE.
IATA string
// Geographical coordinates (latitude/longitude) of the location, if there is any.
Coordinates string
// Some general remarks regarding the UN/LOCODE in question.
Remarks string
}
// ErrInvalidString is the error of incorrect string format of the LOCODE.
var ErrInvalidString = errors.New("invalid string format in UN/Locode")
// FromString parses string and returns LOCODE.
//
// If string has incorrect format, ErrInvalidString returns.
func FromString(s string) (*LOCODE, error) {
const (
locationSeparator = " "
locodePartsNumber = 2
)
words := strings.Split(s, locationSeparator)
if ln := len(words); ln != locodePartsNumber {
return nil, fmt.Errorf(
"incorrect locode: it must consist of %d codes separated with a witespase, got: %d",
locodePartsNumber,
ln,
)
}
l := new(LOCODE)
copy(l[:], words)
return l, nil
}
// CountryCode returns a string representation of country code.
func (l *LOCODE) CountryCode() string {
return l[0]
}
// LocationCode returns a string representation of location code.
func (l *LOCODE) LocationCode() string {
return l[1]
}

156
pkg/locode/table/csv/calls.go Normal file
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package csvlocode
import (
"encoding/csv"
"errors"
"io"
"os"
"strings"
"git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode"
locodedb "git.frostfs.info/TrueCloudLab/frostfs-locode-db/pkg/locode/db"
)
var errInvalidRecord = errors.New("invalid table record")
// IterateAll scans a table record one-by-one, parses a UN/LOCODE record
// from it and passes it to f.
//
// Returns f's errors directly.
func (t *Table) IterateAll(f func(locode.Record) error) error {
const wordsPerRecord = 12
return t.scanWords(t.paths, wordsPerRecord, func(words []string) error {
lc, err := locode.FromString(strings.Join(words[1:3], " "))
if err != nil {
return err
}
record := locode.Record{
Ch: words[0],
LOCODE: *lc,
Name: words[3],
NameWoDiacritics: words[4],
SubDiv: words[5],
Function: words[6],
Status: words[7],
Date: words[8],
IATA: words[9],
Coordinates: words[10],
Remarks: words[11],
}
return f(record)
})
}
const (
_ = iota - 1
subDivCountry
subDivSubdivision
subDivName
_ // subDivLevel
subDivFldNum
)
type subDivKey struct {
countryCode,
subDivCode string
}
type subDivRecord struct {
name string
}
// SubDivName scans a table record to an in-memory table (once),
// and returns the subdivision name of the country and the subdivision codes match.
//
// Returns locodedb.ErrSubDivNotFound if no entry matches.
func (t *Table) SubDivName(countryCode *locodedb.CountryCode, code string) (string, error) {
if err := t.initSubDiv(); err != nil {
return "", err
}
rec, ok := t.mSubDiv[subDivKey{
countryCode: countryCode.String(),
subDivCode: code,
}]
if !ok {
return "", locodedb.ErrSubDivNotFound
}
return rec.name, nil
}
func (t *Table) initSubDiv() (err error) {
t.subDivOnce.Do(func() {
t.mSubDiv = make(map[subDivKey]subDivRecord)
err = t.scanWords([]string{t.subDivPath}, subDivFldNum, func(words []string) error {
t.mSubDiv[subDivKey{
countryCode: words[subDivCountry],
subDivCode: words[subDivSubdivision],
}] = subDivRecord{
name: words[subDivName],
}
return nil
})
})
return
}
var errScanInt = errors.New("interrupt scan")
func (t *Table) scanWords(paths []string, fpr int, wordsHandler func([]string) error) error {
var (
rdrs = make([]io.Reader, 0, len(t.paths))
closers = make([]io.Closer, 0, len(t.paths))
)
for i := range paths {
file, err := os.OpenFile(paths[i], os.O_RDONLY, t.mode)
if err != nil {
return err
}
rdrs = append(rdrs, file)
closers = append(closers, file)
}
defer func() {
for i := range closers {
_ = closers[i].Close()
}
}()
r := csv.NewReader(io.MultiReader(rdrs...))
r.ReuseRecord = true
r.FieldsPerRecord = fpr
for {
words, err := r.Read()
if err != nil {
if errors.Is(err, io.EOF) {
break
}
return err
} else if len(words) != fpr {
return errInvalidRecord
}
if err := wordsHandler(words); err != nil {
if errors.Is(err, errScanInt) {
break
}
return err
}
}
return nil
}

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pkg/locode/table/csv/opts.go Normal file
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package csvlocode
import (
"io/fs"
)
// Option sets an optional parameter of Table.
type Option func(*options)
type options struct {
mode fs.FileMode
extraPaths []string
}
func defaultOpts() *options {
return &options{
mode: 0o700,
}
}
// WithExtraPaths returns an option to add extra paths
// to UN/LOCODE tables in csv format.
func WithExtraPaths(ps ...string) Option {
return func(o *options) {
o.extraPaths = append(o.extraPaths, ps...)
}
}

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pkg/locode/table/csv/table.go Normal file
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package csvlocode
import (
"fmt"
"io/fs"
"sync"
)
// Prm groups the required parameters of the Table's constructor.
//
// All values must comply with the requirements imposed on them.
// Passing incorrect parameter values will result in constructor
// failure (error or panic depending on the implementation).
type Prm struct {
// Path to UN/LOCODE csv table.
//
// Must not be empty.
Path string
// Path to csv table of UN/LOCODE Subdivisions.
//
// Must not be empty.
SubDivPath string
}
// Table is a descriptor of the UN/LOCODE table in csv format.
//
// For correct operation, Table must be created
// using the constructor (New) based on the required parameters
// and optional components. After successful creation,
// The Table is immediately ready to work through API.
type Table struct {
paths []string
mode fs.FileMode
subDivPath string
subDivOnce sync.Once
mSubDiv map[subDivKey]subDivRecord
}
const invalidPrmValFmt = "invalid parameter %s (%T):%v"
func panicOnPrmValue(n string, v any) {
panic(fmt.Sprintf(invalidPrmValFmt, n, v, v))
}
// New creates a new instance of the Table.
//
// Panics if at least one value of the parameters is invalid.
//
// The created Table does not require additional
// initialization and is completely ready for work.
func New(prm Prm, opts ...Option) *Table {
switch {
case prm.Path == "":
panicOnPrmValue("Path", prm.Path)
case prm.SubDivPath == "":
panicOnPrmValue("SubDivPath", prm.SubDivPath)
}
o := defaultOpts()
for i := range opts {
opts[i](o)
}
return &Table{
paths: append(o.extraPaths, prm.Path),
mode: o.mode,
subDivPath: prm.SubDivPath,
}
}