started working on database design
This commit is contained in:
Valentijn van der Jagt
15
go.mod
15
go.mod
@@ -4,4 +4,17 @@ go 1.25.0
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require github.com/joho/godotenv v1.5.1
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require github.com/mattn/go-sqlite3 v1.14.34 // indirect
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require (
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github.com/dustin/go-humanize v1.0.1 // indirect
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github.com/google/uuid v1.6.0 // indirect
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github.com/mattn/go-isatty v0.0.20 // indirect
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github.com/mattn/go-sqlite3 v1.14.34 // indirect
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github.com/ncruces/go-strftime v1.0.0 // indirect
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github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
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golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546 // indirect
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golang.org/x/sys v0.37.0 // indirect
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modernc.org/libc v1.67.6 // indirect
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modernc.org/mathutil v1.7.1 // indirect
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modernc.org/memory v1.11.0 // indirect
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modernc.org/sqlite v1.46.1 // indirect
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)
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23
go.sum
23
go.sum
@@ -1,4 +1,27 @@
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github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
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github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
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github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
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github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
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github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
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github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
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github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
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github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
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github.com/mattn/go-sqlite3 v1.14.34 h1:3NtcvcUnFBPsuRcno8pUtupspG/GM+9nZ88zgJcp6Zk=
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github.com/mattn/go-sqlite3 v1.14.34/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
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github.com/ncruces/go-strftime v1.0.0 h1:HMFp8mLCTPp341M/ZnA4qaf7ZlsbTc+miZjCLOFAw7w=
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github.com/ncruces/go-strftime v1.0.0/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
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github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
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github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
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golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546 h1:mgKeJMpvi0yx/sU5GsxQ7p6s2wtOnGAHZWCHUM4KGzY=
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golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546/go.mod h1:j/pmGrbnkbPtQfxEe5D0VQhZC6qKbfKifgD0oM7sR70=
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golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/sys v0.37.0 h1:fdNQudmxPjkdUTPnLn5mdQv7Zwvbvpaxqs831goi9kQ=
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golang.org/x/sys v0.37.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
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modernc.org/libc v1.67.6 h1:eVOQvpModVLKOdT+LvBPjdQqfrZq+pC39BygcT+E7OI=
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modernc.org/libc v1.67.6/go.mod h1:JAhxUVlolfYDErnwiqaLvUqc8nfb2r6S6slAgZOnaiE=
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modernc.org/mathutil v1.7.1 h1:GCZVGXdaN8gTqB1Mf/usp1Y/hSqgI2vAGGP4jZMCxOU=
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modernc.org/mathutil v1.7.1/go.mod h1:4p5IwJITfppl0G4sUEDtCr4DthTaT47/N3aT6MhfgJg=
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modernc.org/memory v1.11.0 h1:o4QC8aMQzmcwCK3t3Ux/ZHmwFPzE6hf2Y5LbkRs+hbI=
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modernc.org/memory v1.11.0/go.mod h1:/JP4VbVC+K5sU2wZi9bHoq2MAkCnrt2r98UGeSK7Mjw=
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modernc.org/sqlite v1.46.1 h1:eFJ2ShBLIEnUWlLy12raN0Z1plqmFX9Qe3rjQTKt6sU=
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modernc.org/sqlite v1.46.1/go.mod h1:CzbrU2lSB1DKUusvwGz7rqEKIq+NUd8GWuBBZDs9/nA=
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114
main.go
114
main.go
@@ -1,24 +1,110 @@
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package main
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// https://stackoverflow.com/questions/61080317/go-lang-very-simple-http-post-requests-and-response-endpoint (simple post endpoint)
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// https://stackoverflow.com/questions/16466320/is-there-a-way-to-do-repetitive-tasks-at-intervals
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import (
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"log"
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"net/http"
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/*
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Author: Valentijn van der Jagt
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_ "github.com/mattn/go-sqlite3"
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In this project i play around with go. This is my first time writing go, and im using a lot of help from sources. all useful sources are listed in the comments below.
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*/
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// https://stackoverflow.com/questions/61080317/go-lang-very-simple-http-post-requests-and-response-endpoint, HTTP Server example
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// https://stackoverflow.com/questions/16466320/is-there-a-way-to-do-repetitive-tasks-at-intervals, How timer intervals work in GoLang
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// https://pkg.go.dev/modernc.org/sqlite#section-documentation, how to interface with specifically sqlite in GoLang
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// https://github.com/mattn/go-sqlite3/blob/v1.14.34/_example/simple/simple.go, How to inferface with a database in GoLang.
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import (
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"database/sql"
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"log"
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_ "modernc.org/sqlite"
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)
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func checkRequestHeader(req *http.Request, res http.ResponseWriter, method string) bool {
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if req.Method == method {
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return true
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func executeQuery(db *sql.DB, query string) {
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_, err := db.Exec(query)
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if err != nil {
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log.Printf("%q: %s\n", err, query)
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return
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}
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res.WriteHeader(http.StatusMethodNotAllowed)
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return false
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}
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func createTables(db *sql.DB) {
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executeQuery(db, `
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CREATE TABLE shipments (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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tracking_number TEXT NOT NULL UNIQUE,
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service TEXT NOT NULL,
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sender_name TEXT,
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receiver_name TEXT,
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origin_country TEXT,
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origin_city TEXT,
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origin_postal TEXT,
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origin_address TEXT,
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destination_country TEXT,
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destination_city TEXT,
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destination_postal TEXT,
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destination_address TEXT,
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pickup_date TEXT,
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estimated_delivery_from TEXT,
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estimated_delivery_to TEXT,
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current_status TEXT,
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last_update TEXT DEFAULT (datetime('now')),
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created_at TEXT DEFAULT (datetime('now'))
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);
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-- Status Events: history of status updates
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CREATE TABLE shipment_events (
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id INTEGER PRIMARY KEY,
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shipment_id INTEGER NOT NULL,
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event_time TEXT NOT NULL,
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status_code TEXT NOT NULL,
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status_desc TEXT,
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description TEXT,
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remark TEXT,
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next_steps TEXT,
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location_country TEXT,
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location_city TEXT,
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location_postal TEXT,
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FOREIGN KEY (shipment_id) REFERENCES shipments(id)
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);
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CREATE INDEX idx_events_shipment_time ON shipment_events(shipment_id, event_time);
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CREATE TABLE shipment_updates (
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id INTEGER PRIMARY KEY,
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shipment_id INTEGER NOT NULL,
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update_time TEXT DEFAULT (datetime('now')),
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service TEXT,
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location_country TEXT,
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location_city TEXT,
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status_code TEXT,
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status_desc TEXT,
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estimated_from TEXT,
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estimated_to TEXT,
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FOREIGN KEY (shipment_id) REFERENCES shipments(id)
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);
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CREATE INDEX idx_updates_shipment_time ON shipment_updates(shipment_id, update_time);
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`)
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log.Printf("[Database] tables created")
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}
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func dropTables(db *sql.DB) {
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executeQuery(db, `
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DROP TABLE IF EXISTS shipments;
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DROP TABLE IF EXISTS shipment_events;
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DROP TABLE IF EXISTS shipment_updates;
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`)
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log.Printf("[Database] tables dropped")
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}
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func main() {
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log.Println("[Main] now serving 0.0.0.0:8090")
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http.ListenAndServe(":8090", nil)
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db, err := sql.Open("sqlite", "./dhl.db")
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if err != nil {
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log.Fatal(err)
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}
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defer db.Close()
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dropTables(db) // temporarely for debugging
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createTables(db)
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}
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