github.com/projectriff/riff-cli@v0.0.5-0.20180301104501-5db7a3bd9fc1/pkg/initializers/python/dockerfile_generator.go (about)

     1  /*
     2   * Copyright 2018 the original author or authors.
     3   *
     4   *   Licensed under the Apache License, Version 2.0 (the "License");
     5   *   you may not use this file except in compliance with the License.
     6   *   You may obtain a copy of the License at
     7   *
     8   *        http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   *   Unless required by applicable law or agreed to in writing, software
    11   *   distributed under the License is distributed on an "AS IS" BASIS,
    12   *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   *   See the License for the specific language governing permissions and
    14   *   limitations under the License.
    15   */
    16  
    17  package python
    18  
    19  import (
    20  	"github.com/projectriff/riff-cli/pkg/initializers/core"
    21  	"github.com/projectriff/riff-cli/pkg/options"
    22  	"path/filepath"
    23  	"github.com/projectriff/riff-cli/pkg/osutils"
    24  )
    25  
    26  type PythonDockerFileTokens struct {
    27  	core.DockerFileTokens
    28  	RequirementsTextExists bool
    29  }
    30  
    31  var pythonFunctionDockerfileTemplate = `
    32  FROM projectriff/python2-function-invoker:{{.RiffVersion}}
    33  ARG FUNCTION_MODULE={{.ArtifactBase}}
    34  ARG FUNCTION_HANDLER={{.Handler}}
    35  ADD ./{{.ArtifactBase}} /
    36  {{- if .RequirementsTextExists }}
    37  ADD ./requirements.txt /
    38  RUN  pip install --upgrade pip && pip install -r /requirements.txt
    39  {{- end }}
    40  ENV FUNCTION_URI file:///${FUNCTION_MODULE}?handler=${FUNCTION_HANDLER}
    41  `
    42  
    43  func generatePythonFunctionDockerFile(opts options.InitOptions) (string, error) {
    44  	dockerFileTokens := PythonDockerFileTokens{}
    45  	dockerFileTokens.Artifact = opts.Artifact
    46  	dockerFileTokens.ArtifactBase = filepath.Base(opts.Artifact)
    47  	dockerFileTokens.RiffVersion = opts.RiffVersion
    48  	dockerFileTokens.Handler = opts.Handler
    49  	dockerFileTokens.RequirementsTextExists = requirementTextExists(opts.FilePath)
    50  
    51  	return core.GenerateFunctionDockerFileContents(pythonFunctionDockerfileTemplate, "docker-python", dockerFileTokens)
    52  }
    53  
    54  func requirementTextExists(filePath string) bool {
    55  	if !osutils.IsDirectory(filePath) {
    56  		filePath = filepath.Dir(filePath)
    57  	}
    58  	return osutils.FileExists(filepath.Join(filePath, "requirements.txt"))
    59  }