FTP

FTP Server

docker-compose.yml

version: "3"
services:
  nats:
    image: atmoz/sftp
    container_name: sftp-server
    command: foo:pass:1001
    volumes:
      - "./upload:/home/foo/upload"
    ports:
      - "2222:22"

$ docker-compose -f docker-compose.yml up

SFTP Listener

sftp_listener_credentials_auth.bal

import ballerina/ftp;
import ballerina/io;

listener ftp:Listener securedEP = new ({
    protocol: ftp:SFTP,
    host: "127.0.0.1",
    port: 2222,
    auth: {
        credentials: {
            username: "foo",
            password: "pass"
        }
    },
    path: "/upload",
    pollingInterval: 2,
    fileNamePattern: "(.*).txt"
});

isolated service on securedEP {
    isolated function onFileChange(ftp:WatchEvent event) {
        foreach ftp:FileInfo addedFile in event.addedFiles {
            io:println("Added file of path: ", addedFile.path);
        }
        foreach string deletedFile in event.deletedFiles {
            io:println("Deleted file of path: ", deletedFile);
        }
    }
}

$ bal run sftp_listener_credentials_auth.bal

SFTP Client

sftp_client_credentials_auth.bal

import ballerina/ftp;
import ballerina/io;

final ftp:Client securedEP = check new ({
    protocol: ftp:SFTP,
    host: "127.0.0.1",
    port: 2222,
    auth: {
        credentials: {
            username: "foo",
            password: "pass"
        }
    }
});

public function main() returns error? {
    ftp:FileInfo[] response = check securedEP->list("/upload");
    foreach ftp:FileInfo info in response {
        io:println("File: ", info.path);
    }
}

$ bal run sftp_client_credentials_auth.bal

Resources

private.key

-----BEGIN PRIVATE KEY-----
MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQCBXKLp9WJUuJko
SfDn3HM2LWVxiHrP11me6D4X2AqoUiCZ1w976q1LuBlzWNhONYwJvHXewUuRmo0d
4NRp2ma0qjdMN246XWyozpzPfJdvovfiT+V6HnSbMg82ZppfF3e85Cgrg6mSA7Wf
faaHr62SnexseZ9ioNCuRUrW2Zg208l99IItP4K4iGclQlyjs3S6drH7JJk3rv8B
f76wmmoCEAhknOtGLq543dEUIjFgNdIy/GsSY52fiA4LSjUCv27kGn03nayqoZs3
XHqM0qLdt9SPXbYe7l75j0o6Z9tyGFCKXY/zVwiLfRUqDIOfkN5YS4Ohit52Tj7q
oBmvEzD7AgMBAAECggEAXM/F4u23OummmQ1T1kaIMpqnaalt06jCGAywYBMUsmca
FMYDyfg5lVXkjKl1p8crTeD1AHjWawTjskgYnkmf3ocxXXF3mFBnIUX7o7HURLg7
+RcxoUgwiRiFaZZ7szX3JoLbfzzbcHNQ37kavccBVWwQsFMiU3Tlw+LbKwK6/row
LYsQPx7gT4u7hViat4vQDTYcgyjvvFCiek4ndL6O9K49MxIMU678UXB6ia5iUevy
vgEfcYkKQ5EQ38qS3ZwsubPvj4633jvAJRr/hJD8XINZC74kTXeV3BGH2LlpQOEq
kWkOypwYNjnXtt1JO8+Iu6mEXKUoiIBPfGrJ3vDSQQKBgQDmYPc7kfYan/LHjJRv
iE2CwbC26yVA6+BEPQv9z7jChO9Q6cUbGvM8EEVNpC9nmFogkslzJhz55HP84QZL
u3ptU+D96ncq6zkBqxBfRnZG++D36+XRXIwzz3h+g1Nwrl0y0MFbwlkMm3ZqJdd6
pZz1FZGd6zvQftW8m7jPSKHuswKBgQCPv6czFOZR6bI+qCQdaORpe9JGoAduOD+4
YKl96s0eiAKhkGhFCrMd6GJwWRkpNcfwB+J9sMahORbfvwiYanI56h7Vi30DFPRb
m1m8dLkr6z+8bxMxKJaMXIIjy3UDamgDr7QHInNUih2iGvtB8QqZ0aobsB2XIxZg
qESTMcpYmQKBgHSwSqneraQgvgz7FLhFdtUzHDoacr0mfGqz7R37F99XDAyUy+SF
ywvyRdgkwGodjhEPqH/tnyGn6GP+6nxzknhL0xtppkCT8kT5C4rmmsQrknChCL/5
u34GqUaTaDEb8FLrz/SVRRuQpvLvBey2dADjkuVFH//kLoig64P6iyLnAoGBAIlF
g+2L78YZXVXoS1SqbjUtQUigWXgvzunLpQ/Rwb9+MsUGmgwUg6fz2s1eyGBKM3xM
i0VsIsKjOezBCPxD6oDTyk4yvlbLE+7HE5KcBJikNmFD0RgIonu3e6+jA0MXweyD
RW/qviflHRdInNgDzxPE3KVEMX26zAvRpGrMCWdBAoGAdQ5SvX+mAC3cKqoQ9Zal
lSqWoyjfzP5EaVRG8dtoLxbznQGTTvtHXc65/MznX/L9qkWCS6Eb4HH5M3hFNY46
LNIzGQLznE1odwv7H5B8c0/m3DrKTxbh8bYcrR1BW5/nKZNNW7k1O6OjEozvAajK
JQdp3KBU9S8CmBjGrRpJ2qw=
-----END PRIVATE KEY-----