datagen 0.1.4

An easy to use tool to generate fake data in bulk and export it as Avro, Parquet or directly into your database as tables
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68

extern crate structopt;

use std::fmt::Error;
use std::fs;
use std::fs::File;

use failure_tools::ok_or_exit;
use structopt::StructOpt;

use datagen::{write_csv, write_avro, write_json};
use std::path::Path;

mod options;

fn run() -> Result<(), Error> {
    use options::Command::*;

    let opt: options::Args = options::Args::from_args();

    match opt.command {
        GenerateCSV {
            output_path,
            schema_path,
            num_records,
            delimiter,
        } => {
            println!(
                "Output Path {}, Schema Path {}, Num Records {}",
                &output_path, schema_path, num_records
            );
            fs::create_dir_all(Path::new(&output_path).parent().unwrap());
            let writer = File::create(&output_path).expect("Output File Path not found");
            write_csv(writer, schema_path, num_records as i64, delimiter);
        }
        GenerateAvro {
            output_path,
            schema_path,
            num_records,
        } => {
            println!(
                "Output Path {}, Schema Path {}, Num Records {}",
                output_path, schema_path, num_records
            );
            fs::create_dir_all(Path::new(&output_path).parent().unwrap());
            let writer = File::create(&output_path).expect("Output File Path not found");
            write_avro(writer, schema_path, num_records as i64);
        },
        GenerateJson {
            output_path,
            schema_path,
            num_records
        } => {
            println!(
                "Output Path {}, Schema Path {}, Num Records {}",
                &output_path, schema_path, num_records
            );
            fs::create_dir_all(Path::new(&output_path).parent().unwrap());
            let writer = File::create(&output_path).expect("Output File Path not found");
            write_json(writer, schema_path, num_records as i64);
        }
    }

    Ok(())
}

fn main() {
    ok_or_exit(run())
}