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Merge pull request #1 from amnuts/location-lookup
Location lookup added
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "database/sql" | ||
| _ "modernc.org/sqlite" | ||
| ) | ||
|
|
||
| func NewCacheDatabase(dbFile string) (*CacheDatabase, error) { | ||
| sqliteDb, err := sql.Open("sqlite", dbFile) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| cache := &CacheDatabase{DB: sqliteDb} | ||
| err = cache.initCache() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return cache, nil | ||
| } | ||
|
|
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| func (cache *CacheDatabase) initCache() error { | ||
| // Create table if it doesn't exist | ||
| createTableSql := `CREATE TABLE IF NOT EXISTS locations ( | ||
| geohash TEXT PRIMARY KEY, | ||
| latitude REAL NOT NULL, | ||
| longitude REAL NOT NULL, | ||
| country TEXT NOT NULL, | ||
| division TEXT NOT NULL, | ||
| city TEXT NOT NULL, | ||
| place TEXT NOT NULL, | ||
| url TEXT NOT NULL | ||
| );` | ||
|
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| _, err := cache.DB.Exec(createTableSql) | ||
| checkErr(err, "Failed to create locations table") | ||
|
|
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| return err | ||
| } | ||
|
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| func (cache *CacheDatabase) InsertLocation(url string, location GeoLocationMetadata) error { | ||
| stmt, err := cache.DB.Prepare("INSERT INTO locations(geohash, latitude, longitude, country, division, city, place, url) VALUES(?, ?, ?, ?, ?, ?, ?, ?)") | ||
| _, err = stmt.Exec(location.Geohash, location.Latitude, location.Longitude, location.Country, location.Division, location.City, location.Place, url) | ||
| return err | ||
| } | ||
|
|
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| func (cache *CacheDatabase) GetLocation(geohash string) (*GeoLocationMetadata, error) { | ||
|
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| var rowGeohash string | ||
| var rowLatitude float64 | ||
| var rowLongitude float64 | ||
| var rowCountry string | ||
| var rowDivision string | ||
| var rowCity string | ||
| var rowPlace string | ||
| var rowUrl string | ||
|
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| if err := cache.DB.QueryRow("SELECT * FROM locations WHERE geohash = ?", geohash).Scan(&rowGeohash, &rowLatitude, &rowLongitude, &rowCountry, &rowDivision, &rowCity, &rowPlace, &rowUrl); err != nil { | ||
| return nil, err | ||
| } | ||
|
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| var location *GeoLocationMetadata | ||
| location = &GeoLocationMetadata{ | ||
| Geohash: rowGeohash, | ||
| Latitude: rowLatitude, | ||
| Longitude: rowLongitude, | ||
| Country: rowCountry, | ||
| Division: rowDivision, | ||
| City: rowCity, | ||
| Place: rowPlace, | ||
| } | ||
|
|
||
| return location, nil | ||
| } |
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