Get driver from Jenkins cloud by name

fetch.py

@@ -0,0 +1,110 @@
+import requests
+
+
+class DriverUrl:
+    def __init__(self, name: str, url: str):
+        self.name = name
+        self.url = url
+
+
+def get_all_drivers() -> [DriverUrl]:
+    URL = "https://jenkins.cellario.cloud/job/drivers/api/json"
+    user, token = read_credentials()
+
+    res = requests.get(URL, auth=(user, token))
+
+    drivers: [DriverUrl] = []
+
+    if res.status_code != 200:
+        raise Exception("Failed to get driver list", res.status_code)
+
+    res_json = res.json()
+    jobs = res_json["jobs"]
+
+    for job in jobs:
+        driver_url = DriverUrl(job["name"], job["url"])
+        drivers.append(driver_url)
+
+    return drivers
+
+
+def get_driver_by_exact_name(name: str) -> DriverUrl:
+    drivers = get_all_drivers()
+
+    try:
+        res = next(driver for driver in drivers if driver.name == name)
+    except StopIteration:
+        raise Exception("Driver not found")
+
+    return res
+
+
+def find_master_branch(driver: DriverUrl) -> str:
+    user, token = read_credentials()
+    driver_jobs_res = requests.get(
+        driver.url + "/api/json", auth=(user, token))
+
+    if driver_jobs_res.status_code != 200:
+        raise Exception("Failed to read driver jobs page",
+                        driver_jobs_res.status_code)
+
+    driver_jobs_json = driver_jobs_res.json()
+
+    master_branch_url = ""
+    for job in driver_jobs_json["jobs"]:
+        if job["name"] == "master":
+            master_branch_url = job["url"]
+
+    return master_branch_url
+
+
+def get_hrb_artifact_url(master_url: str) -> str:
+    user, token = read_credentials()
+    res = requests.get(master_url + "/lastSuccessfulBuild" +
+                       "/api/json", auth=(user, token))
+
+    if res.status_code != 200:
+        raise Exception("Failed to read master branch", res.status_code)
+
+    json = res.json()
+
+    try:
+        hrb_url = next(artifact["relativePath"]
+                       for artifact in json["artifacts"]
+                       if ".hrb" in artifact["relativePath"])
+    except StopIteration:
+        raise Exception("Failed to find an hrb archive")
+
+    return master_url + "/lastSuccessfulBuild/artifact/" + hrb_url
+
+
+def download_driver(driver: DriverUrl, output: str):
+    user, token = read_credentials()
+
+    master_branch_url = find_master_branch(driver)
+    hrb_url = get_hrb_artifact_url(master_branch_url)
+
+    res = requests.get(hrb_url, auth=(user, token))
+
+    if res.status_code != 200:
+        raise Exception("Failed to download file", res.status_code)
+
+    with open(output, 'xb') as file:
+        for chunk in res.iter_content(chunk_size=128):
+            file.write(chunk)
+
+
+def read_credentials() -> (str, str):
+    token = ""
+    user = ""
+    with open("token", "r") as file:
+        for line in file:
+            spl = line.strip().split('=')
+            if spl[0] == "token":
+                token = spl[1]
+            elif spl[0] == "user":
+                user = spl[1]
+    if not (token or user):
+        raise Exception("Failed to read credentials")
+
+    return (user, token)