From b3d0af2de29711abfe6da373786d365d9a6de198 Mon Sep 17 00:00:00 2001 From: "Gabriel A. Giovanini" Date: Wed, 13 Mar 2024 21:17:51 +0100 Subject: feat: Rewrite to golang I have found a nice lib in go to handle XML so I migrate to it. Go is ages easier to deploy then python. --- .gitignore | 4 +- LICENSE | 683 ++++++++++++++++++++++++++++++++++++++++++++-- Makefile | 39 +-- Procfile | 1 - README.md | 15 - build.yml | 25 -- docs/bamboo.min.css | 369 ------------------------- docs/template.html | 51 ---- go.mod | 5 + go.sum | 2 + jnfilter/__init__.py | 102 ------- jnfilter/__main__.py | 4 - main.go | 188 +++++++++++++ setup.py | 23 -- test/dev-requirements.txt | 0 test/test_main.py | 0 16 files changed, 877 insertions(+), 634 deletions(-) delete mode 100644 Procfile delete mode 100644 build.yml delete mode 100644 docs/bamboo.min.css delete mode 100644 docs/template.html create mode 100644 go.mod create mode 100644 go.sum delete mode 100644 jnfilter/__init__.py delete mode 100644 jnfilter/__main__.py create mode 100644 main.go delete mode 100644 setup.py delete mode 100644 test/dev-requirements.txt delete mode 100644 test/test_main.py diff --git a/.gitignore b/.gitignore index 74e5fbc..e660fd9 100644 --- a/.gitignore +++ b/.gitignore @@ -1,3 +1 @@ -.idea/ -__pycache__/ -build/ +bin/ diff --git a/LICENSE b/LICENSE index 588d327..d5445e7 100644 --- a/LICENSE +++ b/LICENSE @@ -1,22 +1,661 @@ -MIT License - -Copyright (c) 2021 Gabriel Arakaki Giovanini - -Permission is hereby granted, free of charge, to any person obtaining a copy of -this software and associated documentation files (the "Software"), to deal in -the Software without restriction, including without limitation the rights to -use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies -of the Software, and to permit persons to whom the Software is furnished to do -so, subject to the following conditions: - -The above copyright notice and this permission notice (including the next - paragraph) shall be included in all copies or substantial portions of the -Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If your software can interact with users remotely through a computer +network, you should also make sure that it provides a way for users to +get its source. For example, if your program is a web application, its +interface could display a "Source" link that leads users to an archive +of the code. There are many ways you could offer source, and different +solutions will be better for different programs; see section 13 for the +specific requirements. + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU AGPL, see +. diff --git a/Makefile b/Makefile index 7922953..69b82d9 100644 --- a/Makefile +++ b/Makefile @@ -1,25 +1,26 @@ +BIN?=jnfilter +PREFIX?=/usr/local +BINDIR?=$(PREFIX)/bin -rpm: rpm_dist - rpmbuild -bb \ - ./build/bdist.linux-x86_64/rpm/SPECS/jnfilter.spec \ - --define "_topdir $(PWD)/build/bdist.linux-x86_64/rpm/" +OUT=./bin/$(BIN) +SERVER=./main.go -rpm_dist: - python setup.py bdist_rpm +GO_BUILD=go build -v -ldflags '-w -s' +GO_RUN=go run -v +all: build -clean: - python setup.py clean --all - rm -rf dist jnfilter.egg-info +install: build + install -Dm755 $(OUT) $(BINDIR)/$(BIN) -docs: - pandoc -s \ - --include-in-header=docs/bamboo.min.css \ - --metadata title="Filtro para Nerdcast" \ - --template docs/template.html \ - -s README.md \ - -o index.html +build: + $(GO_BUILD) -o $(OUT) $(SERVER) -install_deps: - dnf install -y rpmdevtools rpmlint python +compress: build + upx -1 $(OUT) + +compress_into_oblivion: build + upx --best --ultra-brute $(OUT) + +run: sass tmpl + $(GO_RUN) $(SERVER) -.PHONY: docs diff --git a/Procfile b/Procfile deleted file mode 100644 index 60ee589..0000000 --- a/Procfile +++ /dev/null @@ -1 +0,0 @@ -web: uvicorn main:app --host=0.0.0.0 --port=${PORT} diff --git a/README.md b/README.md index 30a5a41..2432f10 100644 --- a/README.md +++ b/README.md @@ -59,18 +59,3 @@ parâmetro, se tiver `nerdcast,mamicas` troque para `mamicas,nercast` o ideal e que cliente de podcast nao obrigue a fazer isso mas fazer o que as outras opções fazem pior. - -## Para programadores - -E um projeto simples feito em cima do FastApi. Ele vai pegar o _feed_ e filtrar -os itens do _feed_ do podcast. Não tem cache nem nada sendo armazenado, todo -processamento e feito a partir do feed para cada requisição. - -Para rodar basta instalar os requirements e rodar o seguinte código: - -```shell -uvicorn main:app --host=0.0.0.0 -``` - -E você já pode apontar o seu agregador favorito para sua maquina. - diff --git a/build.yml b/build.yml deleted file mode 100644 index 10616d0..0000000 --- a/build.yml +++ /dev/null @@ -1,25 +0,0 @@ -image: alpine/latest -packages: - - rsync - -sources: - - https://git.sr.ht/~gabrielgio/jnfilter - -secrets: - - 008c4f67-b864-47f8-9790-cd32f2ae8516 - -environment: - build: builds@gabrielgio.me - artifact: artifacts.gabrielgio.me/archive/jnfilter/ - version: 0.1.0 - -tasks: - - archive: | - cd jnfilter - git archive \ - -o jnfilter-$version.tar.gz \ - --prefix=jnfilter-$version/ HEAD - - deploy_archive: | - cd jnfilter - sshopts="ssh -o StrictHostKeyChecking=no" - rsync --mkpath --rsh="$sshopts" -rP *.tar.* $build:/var/www/$artifact diff --git a/docs/bamboo.min.css b/docs/bamboo.min.css deleted file mode 100644 index 5289de7..0000000 --- a/docs/bamboo.min.css +++ /dev/null @@ -1,369 +0,0 @@ - \ No newline at end of file diff --git a/docs/template.html b/docs/template.html deleted file mode 100644 index 0d6c5d0..0000000 --- a/docs/template.html +++ /dev/null @@ -1,51 +0,0 @@ - - - - - - -$for(author-meta)$ - -$endfor$ -$if(date-meta)$ - -$endif$ -$if(keywords)$ - -$endif$ -$if(description-meta)$ - -$endif$ - $if(title-prefix)$$title-prefix$ – $endif$$pagetitle$ - -$for(css)$ - -$endfor$ -$if(math)$ - $math$ -$endif$ - -$for(header-includes)$ - $header-includes$ -$endfor$ - - - -$if(toc)$ - -$endif$ -$body$ -$for(include-after)$ -$include-after$ -$endfor$ - - diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..298fa2b --- /dev/null +++ b/go.mod @@ -0,0 +1,5 @@ +module git.sr.ht/~gabrielgio/jnfilter + +go 1.21.7 + +require github.com/beevik/etree v1.3.0 diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..999dbad --- /dev/null +++ b/go.sum @@ -0,0 +1,2 @@ +github.com/beevik/etree v1.3.0 h1:hQTc+pylzIKDb23yYprodCWWTt+ojFfUZyzU09a/hmU= +github.com/beevik/etree v1.3.0/go.mod h1:aiPf89g/1k3AShMVAzriilpcE4R/Vuor90y83zVZWFc= diff --git a/jnfilter/__init__.py b/jnfilter/__init__.py deleted file mode 100644 index 80b5e02..0000000 --- a/jnfilter/__init__.py +++ /dev/null @@ -1,102 +0,0 @@ -import re -import httpx - -from functools import reduce -from typing import List, Iterator, Union -from xml.etree.ElementTree import ElementTree, fromstring, tostring, register_namespace - -from flask import Flask, Response, request - -app = Flask(__name__) - -URL = "https://api.jovemnerd.com.br/feed-nerdcast/" - -RegexCollection = { - "nerdcast": "NerdCast [0-9]+[a-c]* -", - "empreendedor": "Empreendedor [0-9]+ -", - "mamicas": "Caneca de Mamicas [0-9]+ -", - "english": "Speak English [0-9]+ -", - "nerdcash": "NerdCash [0-9]+ -", - "bunker": "Lá do Bunker [0-9]+ -", - "tech": "NerdTech [0-9]+ -", - "genera": "Generacast [0-9]+ -", -} - -ATOM = "http://www.w3.org/2005/Atom" -ITUNES = "http://www.itunes.com/dtds/podcast-1.0.dtd" -GOOGLEPLAY = "http://www.google.com/schemas/play-podcasts/1.0" - -register_namespace("googleplay", GOOGLEPLAY) -register_namespace("itunes", ITUNES) -register_namespace("atom", ATOM) - - - -def match(title: str, series: List[str]) -> bool: - def _match(s): - return re.match(RegexCollection[s], title) is not None - - return reduce(lambda x, y: x or _match(y), series, False) - - -def filter_xml(xml_str: str, series: List[str], tag: Union[bool, None] = False) -> str: - tree = ElementTree(fromstring(xml_str)) - tree_root = tree.getroot() - for channel in tree_root.findall("./channel"): - - if tag: - tag = f' [{",".join(series)}]'.upper() - channel.find("title").text += tag - channel.find("description").text += tag - channel.find("link").text += f"?{tag}" - channel.find(f"{{{ITUNES}}}author").text += tag - channel.find(f"{{{GOOGLEPLAY}}}author").text += tag - channel.find(f"{{{ITUNES}}}subtitle").text += tag - channel.find(f"{{{ITUNES}}}summary").text += tag - - for item in channel.findall("item"): - title = item.find("title").text - if not match(title, series): - channel.remove(item) - - return tostring(tree_root, encoding='utf8', method='xml') - - -def filter_titles_xml(xml_str) -> Iterator[str]: - tree = ElementTree(fromstring(xml_str)) - tree_root = tree.getroot() - for item in tree_root.findall("./channel/item"): - yield item.find("title").text - - -def load_and_filter(series: str, tag: Union[bool, None] = False) -> str: - series = series or 'nerdcast' - series = series.split(',') - with httpx.Client() as client: - response =client.get(URL) - xml_str = response.content - return filter_xml(xml_str, series, tag) - - -def load_titles() -> Iterator[str]: - with httpx.Client() as client: - response = client.get(URL) - xml_str = response.content - return filter_titles_xml(xml_str) - -@app.route("/", methods=['GET', 'HEAD']) -def root(q: str = '', tag: Union[bool, None] = False): - q = request.args.get("q", "") - tag = request.args.get("tag", False) - return load_and_filter(q, tag), 200, {'Content-Type': 'application/xml'} - - -@app.route("/titles", methods=['GET']) -def titles(): - titles = load_titles() - return "\n".join(titles) - - -@app.route("/series", methods=['GET']) -def series(): - return [i[0] for i in RegexCollection.items()] diff --git a/jnfilter/__main__.py b/jnfilter/__main__.py deleted file mode 100644 index ff2b876..0000000 --- a/jnfilter/__main__.py +++ /dev/null @@ -1,4 +0,0 @@ -from . import run - -if __name__ == '__main__': - run() diff --git a/main.go b/main.go new file mode 100644 index 0000000..945b30b --- /dev/null +++ b/main.go @@ -0,0 +1,188 @@ +package main + +import ( + "context" + "errors" + "flag" + "fmt" + "io" + "net/http" + "regexp" + "strings" + + "github.com/beevik/etree" +) + +type ErrorRequestHandler func(w http.ResponseWriter, r *http.Request) error + +var RegexCollection = map[string]string{ + "nerdcast": "NerdCast [0-9]+[a-c]* -", + "empreendedor": "Empreendedor [0-9]+ -", + "mamicas": "Caneca de Mamicas [0-9]+ -", + "english": "Speak English [0-9]+ -", + "nerdcash": "NerdCash [0-9]+ -", + "bunker": "Lá do Bunker [0-9]+ -", + "tech": "NerdTech [0-9]+ -", + "genera": "Generacast [0-9]+ -", +} + +const ( + FeedUrl = "https://api.jovemnerd.com.br/feed-nerdcast/" +) + +func getSeries(r *http.Request) []string { + query := r.URL.Query().Get("q") + + var series []string + + for _, q := range strings.Split(query, ",") { + if _, ok := RegexCollection[q]; ok { + series = append(series, q) + } + } + + if len(series) > 0 { + return series + } + + return []string{"nerdcast"} +} + +func match(title string, series []string) bool { + for _, s := range series { + if ok, err := regexp.MatchString(RegexCollection[s], title); err == nil && ok { + return true + } + } + + return false +} + +func fetchXML(_ context.Context) ([]byte, error) { + res, err := http.Get(FeedUrl) + if err != nil { + return nil, err + } + defer res.Body.Close() + + if res.StatusCode == http.StatusOK { + return io.ReadAll(res.Body) + } + + return nil, errors.New("Invalid http code") +} + +func appendTag(tag *etree.Element, ap string) { + text := tag.Text() + tag.SetText(text + ap) +} + +func filterBySeries(series []string, xml []byte, temper bool) ([]byte, error) { + doc := etree.NewDocument() + err := doc.ReadFromBytes(xml) + if err != nil { + return nil, err + } + + channel := doc.FindElement("//channel") + + if temper { + tmp := strings.ToUpper(strings.Join(series, ",")) + tmp = fmt.Sprintf(" [%s]", tmp) + appendTag(channel.FindElement("title"), tmp) + appendTag(channel.FindElement("description"), tmp) + appendTag(channel.FindElement("link"), "?"+tmp) + appendTag(channel.FindElement("author[namespace-prefix()='itunes']"), tmp) + appendTag(channel.FindElement("subtitle[namespace-prefix()='itunes']"), tmp) + appendTag(channel.FindElement("summary[namespace-prefix()='itunes']"), tmp) + appendTag(channel.FindElement("author[namespace-prefix()='googleplay']"), tmp) + + } + + for _, tag := range channel.FindElements("item") { + title := tag.FindElement("title").Text() + if !match(title, series) { + channel.RemoveChild(tag) + } + } + + return doc.WriteToBytes() +} + +func wrap(next ErrorRequestHandler) http.HandlerFunc { + return func(w http.ResponseWriter, r *http.Request) { + if err := next(w, r); err != nil { + w.WriteHeader(http.StatusInternalServerError) + } + } +} + +func titles(w http.ResponseWriter, r *http.Request) error { + xml, err := fetchXML(r.Context()) + if err != nil { + return err + } + + doc := etree.NewDocument() + err = doc.ReadFromBytes(xml) + if err != nil { + return err + } + + series := getSeries(r) + + els := doc.FindElements("//channel/item") + for _, e := range els { + txt := e.FindElement("title").Text() + "\n" + if match(txt, series) { + _, err = w.Write([]byte(txt)) + if err != nil { + return err + } + } + } + + return nil +} + +func podcast(w http.ResponseWriter, r *http.Request) error { + xml, err := fetchXML(r.Context()) + if err != nil { + return err + } + + series := getSeries(r) + filterdXML, err := filterBySeries(series, xml, true) + if err != nil { + return err + } + + _, err = w.Write(filterdXML) + if err != nil { + return err + } + + return nil +} + +func main() { + var ( + addr = flag.String("addr", ":8080", "Server address") + ) + + flag.Parse() + + mux := http.NewServeMux() + mux.HandleFunc("/titles", wrap(titles)) + mux.HandleFunc("/", wrap(podcast)) + + server := http.Server{ + Handler: mux, + Addr: *addr, + } + + err := server.ListenAndServe() + if err != nil { + fmt.Printf("Server error: %s", err.Error()) + } +} diff --git a/setup.py b/setup.py deleted file mode 100644 index 7692d27..0000000 --- a/setup.py +++ /dev/null @@ -1,23 +0,0 @@ -from setuptools import setup - -requirements = [ - 'httpx==0.21.1', - 'flask==2.2.2', -] - - -setup(name='jnfilter', - version='0.3.0', - description='A FastAPI server to filter Nercast podcast feed', - url='https://git.sr.ht/~gabrielgio/jnfilter', - author='Gabriel Arakaki Giovanini', - author_email='mail@gabrielgio.me', - license='MIT', - packages=['jnfilter'], - entry_points={ - 'console_scripts': [ - 'jnfilterd=jnfilter', - ] - }, - install_requires=requirements, - zip_safe=False) diff --git a/test/dev-requirements.txt b/test/dev-requirements.txt deleted file mode 100644 index e69de29..0000000 diff --git a/test/test_main.py b/test/test_main.py deleted file mode 100644 index e69de29..0000000 -- cgit v1.2.3