From 6b1b8825aff486146302c91c65fdc4d528860ac0 Mon Sep 17 00:00:00 2001 From: Robert Kaussow Date: Wed, 8 Feb 2023 13:42:55 +0100 Subject: [PATCH] feat: add template helper (#28) --- go.mod | 13 ++++++- go.sum | 56 +++++++++++++++++++++++++++++- template/functions.go | 22 ++++++++++++ template/template.go | 79 +++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 168 insertions(+), 2 deletions(-) create mode 100644 template/functions.go create mode 100644 template/template.go diff --git a/go.mod b/go.mod index 24cbe53..6b6d117 100644 --- a/go.mod +++ b/go.mod @@ -3,13 +3,24 @@ module github.com/thegeeklab/drone-plugin-lib/v2 go 1.20 require ( + github.com/Masterminds/sprig/v3 v3.2.3 github.com/sirupsen/logrus v1.9.0 github.com/urfave/cli/v2 v2.24.3 ) require ( + github.com/Masterminds/goutils v1.1.1 // indirect + github.com/Masterminds/semver/v3 v3.2.0 // indirect github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect + github.com/google/uuid v1.1.1 // indirect + github.com/huandu/xstrings v1.3.3 // indirect + github.com/imdario/mergo v0.3.11 // indirect + github.com/mitchellh/copystructure v1.0.0 // indirect + github.com/mitchellh/reflectwalk v1.0.0 // indirect github.com/russross/blackfriday/v2 v2.1.0 // indirect + github.com/shopspring/decimal v1.2.0 // indirect + github.com/spf13/cast v1.3.1 // indirect github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect - golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8 // indirect + golang.org/x/crypto v0.3.0 // indirect + golang.org/x/sys v0.2.0 // indirect ) diff --git a/go.sum b/go.sum index b69d1eb..40a50d8 100644 --- a/go.sum +++ b/go.sum @@ -1,23 +1,77 @@ +github.com/Masterminds/goutils v1.1.1 h1:5nUrii3FMTL5diU80unEVvNevw1nH4+ZV4DSLVJLSYI= +github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU= +github.com/Masterminds/semver/v3 v3.2.0 h1:3MEsd0SM6jqZojhjLWWeBY+Kcjy9i6MQAeY7YgDP83g= +github.com/Masterminds/semver/v3 v3.2.0/go.mod h1:qvl/7zhW3nngYb5+80sSMF+FG2BjYrf8m9wsX0PNOMQ= +github.com/Masterminds/sprig/v3 v3.2.3 h1:eL2fZNezLomi0uOLqjQoN6BfsDD+fyLtgbJMAj9n6YA= +github.com/Masterminds/sprig/v3 v3.2.3/go.mod h1:rXcFaZ2zZbLRJv/xSysmlgIM1u11eBaRMhvYXJNkGuM= github.com/cpuguy83/go-md2man/v2 v2.0.2 h1:p1EgwI/C7NhT0JmVkwCD2ZBK8j4aeHQX2pMHHBfMQ6w= github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o= github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY= +github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo= +github.com/huandu/xstrings v1.3.3 h1:/Gcsuc1x8JVbJ9/rlye4xZnVAbEkGauT8lbebqcQws4= +github.com/huandu/xstrings v1.3.3/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE= +github.com/imdario/mergo v0.3.11 h1:3tnifQM4i+fbajXKBHXWEH+KvNHqojZ778UH75j3bGA= +github.com/imdario/mergo v0.3.11/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA= +github.com/mitchellh/copystructure v1.0.0 h1:Laisrj+bAB6b/yJwB5Bt3ITZhGJdqmxquMKeZ+mmkFQ= +github.com/mitchellh/copystructure v1.0.0/go.mod h1:SNtv71yrdKgLRyLFxmLdkAbkKEFWgYaq1OVrnRcwhnw= +github.com/mitchellh/reflectwalk v1.0.0 h1:9D+8oIskB4VJBN5SFlmc27fSlIBZaov1Wpk/IfikLNY= +github.com/mitchellh/reflectwalk v1.0.0/go.mod h1:mSTlrgnPZtwu0c4WaC2kGObEpuNDbx0jmZXqmk4esnw= github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk= github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM= +github.com/shopspring/decimal v1.2.0 h1:abSATXmQEYyShuxI4/vyW3tV1MrKAJzCZ/0zLUXYbsQ= +github.com/shopspring/decimal v1.2.0/go.mod h1:DKyhrW/HYNuLGql+MJL6WCR6knT2jwCFRcu2hWCYk4o= github.com/sirupsen/logrus v1.9.0 h1:trlNQbNUG3OdDrDil03MCb1H2o9nJ1x4/5LYw7byDE0= github.com/sirupsen/logrus v1.9.0/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ= +github.com/spf13/cast v1.3.1 h1:nFm6S0SMdyzrzcmThSipiEubIDy8WEXKNZ0UOgiRpng= +github.com/spf13/cast v1.3.1/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE= github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= +github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs= +github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA= github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY= github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= github.com/urfave/cli/v2 v2.24.3 h1:7Q1w8VN8yE0MJEHP06bv89PjYsN4IHWED2s1v/Zlfm0= github.com/urfave/cli/v2 v2.24.3/go.mod h1:GHupkWPMM0M/sj1a2b4wUrWBPzazNrIjouW6fmdJLxc= github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 h1:bAn7/zixMGCfxrRTfdpNzjtPYqr8smhKouy9mxVdGPU= github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673/go.mod h1:N3UwUGtsrSj3ccvlPHLoLsHnpR27oXr4ZE984MbSER8= -golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8 h1:0A+M6Uqn+Eje4kHMK80dtF3JCXC4ykBgQG4Fe06QRhQ= +github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY= +golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= +golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc= +golang.org/x/crypto v0.3.0 h1:a06MkbcxBrEFc0w0QIZWXrH/9cCX6KJyWbBOIwAn+7A= +golang.org/x/crypto v0.3.0/go.mod h1:hebNnKkNXi2UzZN1eVRvBB7co0a+JxK6XbPiWVs/3J4= +golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4= +golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= +golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg= +golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c= +golang.org/x/net v0.2.0/go.mod h1:KqCZLdyyvdV855qA2rE3GC2aiw5xGR5TEjj8smXukLY= +golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= +golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.2.0 h1:ljd4t30dBnAvMZaQCevtY0xLLD0A+bRZXbgLMLU1F/A= +golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= +golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8= +golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc= +golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= +golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= +golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ= 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h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= diff --git a/template/functions.go b/template/functions.go new file mode 100644 index 0000000..f0f42d1 --- /dev/null +++ b/template/functions.go @@ -0,0 +1,22 @@ +package template + +import ( + "text/template" + + "github.com/Masterminds/sprig/v3" +) + +func loadFuncMap() template.FuncMap { + sprigFuncs := sprig.GenericFuncMap() + customFuncs := template.FuncMap{} + + for name, f := range customFuncs { + if _, ok := sprigFuncs[name]; ok { + continue + } + + sprigFuncs[name] = f + } + + return sprigFuncs +} diff --git a/template/template.go b/template/template.go new file mode 100644 index 0000000..d1d6bb6 --- /dev/null +++ b/template/template.go @@ -0,0 +1,79 @@ +// Copyright (c) 2018, Drone.IO Inc +// Copyright (c) 2021, Robert Kaussow + +// Use of this source code is governed by an Apache 2.0 license that can be +// found in the LICENSE file. + +package template + +import ( + "bytes" + "context" + "fmt" + "io" + "net/http" + "net/url" + "os" + "strings" + "text/template" +) + +// Render parses and executes a template, returning the results in string +// format. Trailing or leading spaces or new-lines are not getting truncated. It +// is able to read templates from remote paths, local files or directly from the +// string. +func Render(ctx context.Context, client http.Client, templateString string, payload interface{}) (string, error) { + var outString bytes.Buffer + + tpl := new(template.Template).Funcs(loadFuncMap()) + + templateURL, err := url.Parse(templateString) + if err == nil { + switch templateURL.Scheme { + case "http", "https": + req, err := http.NewRequestWithContext(ctx, http.MethodGet, templateURL.String(), nil) + if err != nil { + return "", fmt.Errorf("failed to create request: %w", err) + } + + res, err := client.Do(req) + if err != nil { + return "", fmt.Errorf("failed to fetch: %w", err) + } + + defer res.Body.Close() + + out, err := io.ReadAll(res.Body) + if err != nil { + return "", fmt.Errorf("failed to read: %w", err) + } + + templateString = string(out) + case "file": + out, err := os.ReadFile(templateURL.Path) + if err != nil { + return "", fmt.Errorf("failed to read: %w", err) + } + + templateString = string(out) + } + } + + tpl, err = tpl.Parse(templateString) + if err != nil { + return "", err + } + + err = tpl.Execute(&outString, payload) + + return outString.String(), err +} + +// RenderTrim parses and executes a template, returning the results in string +// format. The result is trimmed to remove left and right padding and newlines +// that may be added unintentially in the template markup. +func RenderTrim(ctx context.Context, client http.Client, template string, playload interface{}) (string, error) { + out, err := Render(ctx, client, template, playload) + + return strings.Trim(out, " \n"), err +}