gctools/cognos11/c11_api.py

import base64
import os
import requests
from requests_toolbelt.multipart import decoder
import jinja2
import json
import re
from bs4 import BeautifulSoup
import config
from cognos11.xml_prettify import prettify_xml
import logging


class c11_api:
    webservice = ""
    templates_dir = ""
    # templates_dir = "C:/GlobalCube/Tasks/gctools/templates"
    headers = {}
    caf = ""
    cam = ""
    reports = []
    folders = []
    jobs = []
    server_version = "202004"

    def __init__(self, cfg: config.Config):
        self.cfg = cfg
        self.webservice = cfg.cognos11.webservice

        self.templates_dir = cfg.tasks_dir + "/scripts/templates"
        self._env = jinja2.Environment(
            loader=jinja2.FileSystemLoader(self.templates_dir),
            autoescape=jinja2.select_autoescape(["html", "xml"]),
        )
        self.templates = {
            "get_report": self._env.get_template("get_report.xml"),
            "create_report": self._env.get_template("create_report.xml"),
            "update_report": self._env.get_template("update_report.xml"),
            "get_package": self._env.get_template("get_package.xml"),
        }

    @staticmethod
    def generate_token(message_base64):
        version = "V1".encode("utf-8")
        header_len = 4
        msg = base64.b64decode(message_base64)[1:]
        chunks = []

        while len(msg) >= header_len:
            chunk_len = int.from_bytes(msg[:header_len], byteorder="little")
            msg = msg[header_len:]
            chunks.append(msg[:chunk_len])
            msg = msg[chunk_len:]

        return base64.b64encode(version + chunks[-1]).decode("utf-8")

    def login(self):
        cred = self.cfg.cognos11.credentials
        credentials = {
            "parameters": [
                {"name": "h_CAM_action", "value": "logonAs"},
                {"name": "CAMNamespace", "value": cred.namespace},
                {"name": "CAMUsername", "value": cred.username},
                {"name": "CAMPassword", "value": cred.password},
            ]
        }
        self.session = requests.Session()
        r = self.session.get(self.webservice)
        self.headers = {
            "Content-Type": "application/json; charset=UTF-8",
            "X-XSRF-TOKEN": self.session.cookies.get("XSRF-TOKEN"),
        }

        r = self.session.post(
            self.webservice + "v1/login",
            data=json.dumps(credentials),
            headers=self.headers,
        )

        if r.ok:
            self.caf = r.json()["cafContextId"]
            self.cam = self.generate_token(r.cookies["usersessionid"])
        else:
            print("!! Error: Not connected to cognos server !!")
            print(f"Response: {r.status_code} {r.reason}")
            exit(1)

        self.server_version = self.get_server_version()
        return self

    def get_server_version(self):
        r = self.session.get(self.webservice + "pat/rsstartupblock_3.js")
        res = re.search(r"\=\"(\d{6})\";", r.text)
        if res:
            return res.group(1)
        return "202004"

    def get_folders(self):
        if len(self.folders) == 0:
            self.folders.append({"id": "_dot_public_folders", "name": "Team Content"})
            self.load_folder_list()
            self.save_config()
        return self.folders

    def save_config(self):
        os.makedirs(self.cfg.cognos11.config_dir, exist_ok=True)
        with open(self.cfg.cognos11.folders_file, "w") as fwh:
            json.dump(self.folders, fwh, indent=2)
        with open(self.cfg.cognos11.reports_file, "w") as fwh:
            json.dump(self.reports, fwh, indent=2)
        with open(self.cfg.cognos11.jobs_file, "w") as fwh:
            json.dump(self.jobs, fwh, indent=2)

    def load_config_from_files(self):
        with open(self.cfg.cognos11.folders_file, "r") as frh:
            self.folders = json.load(frh)
        with open(self.cfg.cognos11.reports_file, "r") as frh:
            self.reports = json.load(frh)
        with open(self.cfg.cognos11.jobs_file, "w") as frh:
            self.jobs = json.load(frh)

    def load_folder_list(self, folder_id="_dot_public_folders", prefix="Team Content"):
        fields = ",".join(
            [
                "id",
                "defaultName",
                "defaultDescription",
                "type",
                "modificationTime",
                "target.id",
                "target.searchPath",
                "target.defaultName",
                "base.id",
                "base.searchPath",
                "base.defaultName",
                "parameters",
            ]
        )
        res = self.session.get(
            f"{self.webservice}v1/objects/{folder_id}/items?fields={fields}",
            headers=self.headers,
        )
        folder_list = sorted(res.json()["data"], key=lambda x: x["defaultName"])
        for f in folder_list:
            if f["type"] == "folder":
                folder = {
                    "id": f["id"],
                    "name": prefix + "/" + f["defaultName"].replace("/", "-"),
                }
                self.folders.append(folder)
                self.load_folder_list(folder["id"], folder["name"])
            elif f["type"] in ("report", "reportView", "shortcut"):
                report = {
                    "id": f["id"],
                    "name": f["defaultName"].replace("/", "-"),
                    "description": f["defaultDescription"],
                    "modified": f["modificationTime"],
                    "path": prefix,
                    "type": f["type"],
                }
                if f["type"] == "shortcut":
                    report["target_id"] = f["target"][0]["id"]
                if f["type"] == "reportView":
                    report["target_id"] = "" if f["base"] is None else f["base"][0]["id"]
                    report["parameters"] = {}
                    if f["parameters"] is not None:
                        params = [p for p in f["parameters"] if len(p["value"]) > 0]
                        for p in params:
                            report["parameters"][p["name"]] = dict([(v["use"], v["display"]) for v in p["value"]])
                self.reports.append(report)
            elif f["type"] == "jobDefinition":
                job = {"id": f["id"], "name": f["defaultName"], "path": prefix}
                job["details"] = self.get_job_details(job["id"])
                self.jobs.append(job)

    def get_report_details(self, object_id):
        fields = ",".join(
            [
                "defaultDescription",
                "options",
                "executionPrompt",
                "parameters",
                "module.defaultName",
                "module.ancestors",
                "allowNotification",
                "base.id",
                "base.searchPath",
                "base.defaultName",
                "base.defaultDescription",
                "base.ancestors",
                "base.metadataModelPackage",
                "base.module",
            ]
        )
        res = self.session.get(
            f"{self.webservice}v1/objects/{object_id}?fields={fields}",
            headers=self.headers,
        )
        res = res.json()["data"][0]
        res.pop("_meta", None)
        res.pop("id", None)
        res.pop("type", None)
        res.pop("defaultName", None)

        return res

    def get_job_details(self, object_id):
        fields = ",".join(
            [
                "userInterfaces",
                "disabled",
                "runInAdvancedViewer",
                "modificationTime",
                "canBurst",
                "defaultPortalAction",
                "base.defaultName",
                "tags",
                "target.searchPath",
                "target.disabled",
                "options",
                "base.options",
            ]
        )
        res = self.session.get(
            f"{self.webservice}v1/objects/{object_id}?fields={fields}",
            headers=self.headers,
        )
        job = res.json()["data"][0]
        job.pop("_meta", None)
        job.pop("id", None)
        job.pop("type", None)
        job.pop("defaultName", None)

        fields2 = ",".join(
            [
                r"id,displaySequence,stepObject{defaultName}",
                r"stepObject{id},stepObject{parameters}",
                r"stepObject{canBurst},options,parameters",
            ]
        )
        res = self.session.get(
            f"{self.webservice}v1/objects/{object_id}/items?types=jobStepDefinition&fields={fields2}",
            headers=self.headers,
        )
        steps = res.json()["data"]
        for s in steps:
            s.pop("_meta", None)
            if s["stepObject"] is not None:
                s["report_id"] = s["stepObject"][0]["id"]
            s.pop("stepObject", None)
        job["steps"] = steps
        return job

    def get_report(self, report_id):
        self.get_folders()
        report = [r for r in self.reports if r["id"] == report_id]
        if len(report) == 0:
            return None
        report = report[0]
        if "meta" not in report:
            report = self.get_report_specs(report)
        return report

    def get_reports_in_folder(self, folder, recursive=False, specs=False):
        self.get_folders()

        if recursive:
            res = [r for r in self.reports if r["path"].startswith(folder)]
        else:
            res = [r for r in self.reports if r["path"] == folder]

        if specs:
            return [self.get_report_specs(r) for r in res]
        return res

    def get_report_specs(self, report):
        report = self.get_report_filename(report)
        headers = {
            "Content-Type": "text/xml; charset=UTF-8",
            "X-XSRF-TOKEN": self.headers["X-XSRF-TOKEN"],
            "X-RsCMStoreID": report["id"],
            "X-UseRsConsumerMode": "true",
            "SOAPAction": f"http://www.ibm.com/xmlns/prod/cognos/reportService/{self.server_version}/",
        }
        soap = self.templates["get_report"].render(
            {
                "caf": self.caf,
                "cam": self.cam,
                "report": report,
                "format": "XHTML",
                "prompt": "true",
                "tracking": "",
                "params": {},
            }
        )

        r = self.session.post(self.webservice + "v1/reports", data=soap, headers=headers)
        if r.status_code == 500:
            bs = BeautifulSoup(r.text, "xml")
            report["error"] = bs.find_all("messageString")[0].string
            logging.error(f"{report['path']}/{report['name']}")
            logging.error(report["error"])
            return report

        parts = decoder.MultipartDecoder.from_response(r).parts

        meta = {"required": {}, "optional": {}}

        bs = BeautifulSoup(parts[0].content, "xml")
        result = bs.find("bus:result")
        details = result.find("bus:primaryRequest")
        params = details.find("bus:parameters")
        for item in params.find_all("item"):
            if item["xsi:type"] != "bus:parameterValue":
                continue
            k = item.find("bus:name").text
            # v = item.find("bus:value").find_all("item")
            v = {}
            for opt in item.find("bus:value").find_all("item"):
                if opt.find("bus:display") is not None:
                    v[opt.find("bus:use").text] = opt.find("bus:display").text
                else:
                    v[opt.find("bus:use").text] = opt.find("bus:use").text
            if len(v.items()) > 0:
                meta["required"][k] = v

        bs = BeautifulSoup(parts[1].content, "lxml")

        for sv in bs.find_all("selectvalue"):
            k = sv["parameter"]
            v = dict([(opt["usevalue"], opt.get("displayvalue", "")) for opt in sv.find_all("selectoption")])
            meta["optional"][k] = v

        for sv in bs.find_all("selectdate"):
            k = sv["parameter"]
            v = dict([(opt["usevalue"], opt.get("displayvalue", "")) for opt in sv.find_all("selectoption")])
            meta["optional"][k] = v
        filename = self.cfg.cognos11.config_dir + f"/params/{report['path']}/{report['name']}.json"
        os.makedirs(os.path.dirname(filename), exist_ok=True)
        json.dump(meta, open(filename, "w"), indent=2)
        report["cube"] = self.get_cube_name(meta)
        report["meta"] = meta
        report["spec"] = parts[2].text
        return report

    @staticmethod
    def get_cube_name(meta):
        for param in meta["optional"].values():
            for key in param.keys():
                if key.startswith("["):
                    res = re.search(r"^\[([^\]]*)\]", key)
                    return res.group(1)

    def get_report_filename(self, report):
        path = report["path"].replace("Team Content/ReportOutput", "")
        report["filename"] = f"{self.cfg.cognos11.reportoutput_dir}/{path}/{report['name']}.pdf"
        report["format"] = "PDF"
        if report["name"][-5:].lower() == ".xlsx":
            report["format"] = "spreadsheetML"
            report["filename"] = report["filename"][:-4]

        report["params"] = list(re.findall(r"\[([^\]]+)\]", report["filename"]))
        for i, p in enumerate(report["params"]):
            report["filename"] = report["filename"].replace("[" + p + "]", "{" + str(i) + "}")
        return report

    def request_unstubbed(self, report_id):
        report = self.get_report(report_id)
        if "spec" not in report:
            return ""
        payload = json.dumps({"reportspec_stubbed": report["spec"], "storeid": report["id"]})

        headers = {
            "Content-Type": "application/json; charset=UTF-8",
            "X-XSRF-TOKEN": self.session.cookies.get("XSRF-TOKEN"),
            "authenticityToken": self.cam,
            "X-UseRsConsumerMode": "true",
            "cafContextId": self.caf,
        }

        r = self.session.post(self.webservice + "v1/reports/unstubreport", data=payload, headers=headers)
        if r.status_code != 200:
            logging.error(f"{report['path']}/{report['name']}")
            logging.error(r.text)
            return
        unstubbed = json.loads(r.text)["reportspec_full"]
        unstubbed = re.sub(r' iid="[^"]*"', "", unstubbed)

        bs = BeautifulSoup(unstubbed, "xml")
        for xa in bs.find_all("XMLAttributes"):
            if (
                xa.find_all("XMLAttribute", {"name": "RS_dataType"})
                or xa.find_all("XMLAttribute", {"name": "RS_CreateExtendedDataItems"})
                or xa.find_all("XMLAttribute", {"name": "RS_legacyDrillDown"})
            ):
                continue
            if xa.find_all("XMLAttribute", {"name": "supportsDefaultDataFormatting"}):
                for xa2 in xa.find_all("XMLAttribute"):
                    if xa2.attrs["name"] != "supportsDefaultDataFormatting":
                        xa2.decompose()
                continue
            xa.decompose()
        for cti in bs.find_all("crosstabIntersection"):
            if len(list(cti.children)) == 0:
                cti.decompose()
        unstubbed_report = str(bs)
        unstubbed_report = prettify_xml(unstubbed_report).replace("'", """)
        return unstubbed_report

    def get_report_headers(self, report_id=None):
        res = {
            "Content-Type": "text/xml; charset=UTF-8",
            "X-XSRF-TOKEN": self.headers["X-XSRF-TOKEN"],
            "X-UseRsConsumerMode": "true",
            "SOAPAction": f"http://www.ibm.com/xmlns/prod/cognos/reportService/{self.server_version}/",
        }
        if report_id is not None:
            res["X-RsCMStoreID"] = report_id
        return res

    def request_file(self, report_id, params, format="PDF"):
        report = self.get_report(report_id)
        headers = self.get_report_headers(report_id)

        soap = (
            self.templates["get_report"]
            .render(
                {
                    "caf": self.caf,
                    "cam": self.cam,
                    "report": report,
                    "format": format,
                    "prompt": "false",
                    "tracking": "",
                    "params": params,
                }
            )
            .encode("utf-8")
        )
        r = self.session.post(self.webservice + "v1/reports", data=soap, headers=headers)

        bs = BeautifulSoup(r.text, "xml")
        if r.status_code == 200:
            try:
                parts = decoder.MultipartDecoder.from_response(r).parts
            except decoder.NonMultipartContentTypeException:
                return 500, "Timeout"
            return 200, parts[1].content

        error = bs.find_all("messageString")[0].string
        logging.debug(error)
        return r.status_code, error

    def create_report(self, folder_id, fullpath):
        # self.session.get(self.webservice + 'v1/reports/templates?path=%2Fcontent%2Ffolder%5B%40name%3D%27Templates%27%5D/
        # *[@objectClass=%27interactiveReport%27%20or%20@objectClass=%27report%27%20or%20@objectClass=%27reportTemplate%27]&maxResults=100&locale=de')
        # self.session.get(self.webservice + 'v1/reports/startupconfig?keys=supportedContentLocales,supportedCurrencies,
        # supportedFonts,metadataInformationURI,glossaryURI&locale=de')
        headers = self.get_report_headers()
        soap = self.templates["get_package"].render({"caf": self.caf, "cam": self.cam}).encode("utf-8")
        r = self.session.post(self.webservice + "v1/reports", data=soap, headers=headers)
        open("package.xml", "wb").write(r.content)

        search_path = self.request_search_path(folder_id)
        report_name = os.path.basename(fullpath)
        unstubbed = open(fullpath, "rb").read()
        headers["SOAPAction"] = f"http://www.ibm.com/xmlns/prod/cognos/reportService/{self.server_version}/.session"
        headers["Referer"] = "http://localhost:9300/bi/pat/rsapp.htm"
        # headers['caf'] = self.caf

        soap = (
            self.templates["create_report"]
            .render(
                {
                    "caf": self.caf,
                    "cam": self.cam,
                    "search_path": search_path,
                    "report_name": report_name,
                    "unstubbed": unstubbed,
                }
            )
            .encode("utf-8")
        )
        r = self.session.post(self.webservice + "v1/reports", data=soap, headers=headers)
        open("request_create.xml", "wb").write(r.request.body)
        print(r.status_code)
        print(r.text)

    def update_report(self, report, fullpath):
        search_path = self.request_search_path(report["id"])
        unstubbed = open(fullpath, "r").read()
        headers = self.get_report_headers(report["id"])
        # headers['Referer'] = 'http://localhost:9300/bi/pat/rsapp.htm'
        headers["caf"] = self.caf

        soap = self.templates["update_report"].render(
            {
                "caf": self.caf,
                "cam": self.cam,
                "search_path": search_path,
                "unstubbed": unstubbed,
            }
        )  # .encode("utf-8")
        r = self.session.post(self.webservice + "v1/reports", data=soap, headers=headers)
        # open('request_update.xml', 'wb').write(r.request.body)
        print(r.status_code)
        print(r.text)

    def create_folder(self, parent_id, folder_name):
        data = json.dumps({"defaultName": folder_name, "type": "folder"})
        res = self.session.post(
            f"{self.webservice}v1/objects/{parent_id}/items",
            headers=self.headers,
            data=data,
        )

        if res.status_code == 201:
            loc = res.headers.get("Location")
            folder_id = loc.split("/")[-1]
            self.folders.append({"id": folder_id, "name": folder_name})
            return folder_id

    def request_search_path(self, id):
        res = self.session.get(f"{self.webservice}v1/objects/{id}?fields=searchPath", headers=self.headers)
        return res.json()["data"][0]["searchPath"]


if __name__ == "__main__":
    api = c11_api()
    api.login()
    folders = api.get_folders()
    # filename = "C:/GlobalCube/Tasks/gctools/logs/config/folders.json"
    # json.dump(folders, open(filename, "w"), indent=2)
    # filename = "C:/GlobalCube/Tasks/gctools/logs/config/reports.json"
    # json.dump(api.reports, open(filename, "w"), indent=2)
    # filename = "C:/GlobalCube/Tasks/gctools/logs/config/jobs.json"
    # json.dump(api.jobs, open(filename, "w"), indent=2)